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          "rights": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
          "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
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          "verification": "Institutional source checked; uncertainties retained in metadata",
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            "id": "artifact-0009f81bdcaf",
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            "rights_status": "Unknown; reproduction permission not verified",
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            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
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          "summary": "Terra Nova expedition operations and final-journey locations.",
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      "title": "De revolutionibus orbium coelestium",
      "display_title": "Copernicus’s book on planets orbiting the Sun",
      "display_subtitle": "A historical presentation of the Sun-centered planetary system.",
      "url": "vault.html#artifact-001c2434fb14",
      "summary": "Contrasts celestial systems, not Antarctic mapping.",
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      "topics": [
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      "assessment": {
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        "limitations": null
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        "role": "historical reproduction",
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          "title": "De revolutionibus orbium coelestium, folio 9v",
          "caption": "Copernicus’s heliocentric diagram, folio 9v, 1543; Schaffhausen copy.",
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          "rights": "Public Domain Mark",
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          "rights_url": "https://www.e-rara.ch/sbs/content/titleinfo/22444847",
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        "reuse_notice": "Public Domain Mark",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "artifact_date_text": "1543",
        "object_date_text": "1543",
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        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
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          "classification": "Heliocentric celestial model",
          "relevance_and_caution": "Contrasts celestial systems, not Antarctic mapping.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Contrasts celestial systems, not Antarctic mapping.",
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            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
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            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
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              "credit": "Nicolaus Copernicus, 1543. Stadtbibliothek Schaffhausen, R+ 74. https://doi.org/10.3931/e-rara-79844 / Public Domain Mark.",
              "rights": "Public Domain Mark",
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              "role": "image reproduction provenance; not proof of a linked interpretation"
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          ],
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            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-01daf268b27a",
      "legacy_id": "artifact-01daf268b27a",
      "kind": "historical",
      "title": "British Graham Land Expedition : Sledge Journeys and Flights from Southern Base, 1936-7; Diagram Relating the Discoveries of Wilkins and Ellsworth to those of the British Graham Land Expedition",
      "display_title": "Graham Land sledge journeys, flights and mapped discoveries",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-01daf268b27a",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September 1940",
        "object_date_text": "September 1940",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
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        "original_fields": {
          "id": "artifact-01daf268b27a",
          "artifact_id": "AADC map 3716",
          "accession": "AADC map 3716",
          "title": "British Graham Land Expedition : Sledge Journeys and Flights from Southern Base, 1936-7; Diagram Relating the Discoveries of Wilkins and Ellsworth to those of the British Graham Land Expedition",
          "date": "September 1940",
          "institution": "Australian Antarctic Data Centre",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 1 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "55.5 x 45.3 cm",
          "catalog_notes": "Double sided",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Sledge_Journeys_Flights_Sthn_Base_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
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          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Graham Land sledge journeys, flights and mapped discoveries",
          "display_subtitle": "Historical regional or expedition map.",
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            "date_basis": "catalog date of this artifact",
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            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
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      "legacy_id": "artifact-02ade82da423",
      "kind": "historical",
      "title": "Astronomicum Caesareum",
      "display_title": "Apian’s Earth-centered model of the heavens",
      "display_subtitle": "From The Emperor’s Astronomy; an Earth-centered system, not a flat-Earth diagram.",
      "url": "vault.html#artifact-02ade82da423",
      "summary": "Earth-centered does not mean flat Earth.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c4f8a47fd9b567e771eb",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5a47aebeeafaa55cb2ed",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c4f8a47fd9b567e771eb",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "historical reproduction",
        "asset": {
          "src": "assets/v13/29d198ea4689-artifact-02ade82da423-thumb.jpg",
          "title": "Astronomicum Caesareum",
          "caption": "Earth-centered does not mean flat Earth.",
          "credit": "Library of Congress, Rare Book and Special Collections Division",
          "rights": "LOC states no known US copyright or other restrictions.",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
          "rights_url": "https://www.loc.gov/resource/rbc.2023rosen0678/?sp=1",
          "width": 640,
          "height": 924,
          "fit": "contain",
          "visual_role": "historical reproduction",
          "sha256": "29d198ea4689a1868be1045287f65fb448cf0819bb4b10edffdbfa878120b1a9",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC states no known US copyright or other restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1540",
        "object_date_text": "1540",
        "sort_start_year": 1540,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-02ade82da423",
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        "original_fields": {
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          "creator": "Petrus Apianus",
          "date": "1540",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s76p1.jpg",
          "classification": "Geocentric celestial model",
          "relevance_and_caution": "Earth-centered does not mean flat Earth.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Earth-centered does not mean flat Earth.",
          "categories": [
            "Geocentric celestial model"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-02ade82da423",
            "title": "Astronomicum Caesareum",
            "official_source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s76p1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Earth-centered does not mean flat Earth.",
          "display_image": {
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            "title": "Astronomicum Caesareum",
            "caption": "Earth-centered does not mean flat Earth.",
            "credit": "Library of Congress, Rare Book and Special Collections Division",
            "rights": "LOC states no known US copyright or other restrictions.",
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            "rights_url": "https://www.loc.gov/resource/rbc.2023rosen0678/?sp=1",
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          },
          "supporting_images": [
            {
              "src": "assets/v13/15eee65e927a-s76p1.jpg",
              "title": "Astronomicum Caesareum",
              "caption": "Full source page / supporting original. Earth-centered does not mean flat Earth.",
              "credit": "Library of Congress, Rare Book and Special Collections Division",
              "rights": "LOC states no known US copyright or other restrictions.",
              "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
              "rights_url": "https://www.loc.gov/resource/rbc.2023rosen0678/?sp=1",
              "width": 640,
              "height": 924,
              "fit": "contain",
              "visual_role": "historical reproduction",
              "sha256": "15eee65e927add0d7ea5bf1b8f7f81803996103c2af7da4e55aa8b27128ff8f3",
              "source_manifest": "image-provenance-v13.json"
            }
          ],
          "sources": [
            {
              "url": "https://www.loc.gov/exhibits/world/heavens.html#obj76",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/rbc.2023rosen0678/?sp=1",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Apian’s Earth-centered model of the heavens",
          "display_subtitle": "From The Emperor’s Astronomy; an Earth-centered system, not a flat-Earth diagram.",
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            "date_label": "1540",
            "sort_year": 1540,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "1b85fed7d792b56fc2b02192ab74e5f92e5ba28f5953351ebf76b2c11d4cc526"
    },
    {
      "id": "history:artifact-02be77c49a5f",
      "legacy_id": "artifact-02be77c49a5f",
      "kind": "historical",
      "title": "World map, Book of Curiosities",
      "display_title": "Medieval world map from the Book of Curiosities",
      "display_subtitle": "Historical world map.",
      "url": "vault.html#artifact-02be77c49a5f",
      "summary": "Rectangular page geometry is not a physical Earth-shape claim.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e10820f934f96e5fe6b2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Image credited © Bodleian Libraries; reuse permission not verified.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1150–1300 manuscript",
        "object_date_text": "1150–1300 manuscript",
        "sort_start_year": 1150,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-02be77c49a5f",
        "input_record_sha256": "0b3526ca60dee503ceb11926e4d1261fb7238b1b054686f8521c848b74548886",
        "original_fields": {
          "id": "artifact-02be77c49a5f",
          "title": "World map, Book of Curiosities",
          "creator": "Unknown Egyptian compiler/copyist",
          "date": "1150–1300 manuscript",
          "institution": "Bodleian Libraries",
          "source_url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
          "supplemental_or_image_url": null,
          "classification": "South-up rectangular world map",
          "relevance_and_caution": "Rectangular page geometry is not a physical Earth-shape claim.",
          "rights": "Image credited © Bodleian Libraries; reuse permission not verified.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Rectangular page geometry is not a physical Earth-shape claim.",
          "categories": [
            "South-up rectangular world map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-02be77c49a5f",
            "title": "World map, Book of Curiosities",
            "official_source_url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
            "official_viewer_url": "https://artsandculture.google.com/asset/world-map-from-the-book-of-curiosities-of-the-sciences-and-marvels-for-the-eyes-bodleian-library-oxford/UAGcU3E7DbRQnA",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Image credited © Bodleian Libraries; reuse permission not verified.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Rectangular page geometry is not a physical Earth-shape claim.",
          "display_title": "Medieval world map from the Book of Curiosities",
          "display_subtitle": "Historical world map.",
          "chronology": {
            "date_label": "1150–1300 manuscript",
            "sort_year": 1150,
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            "sort_day": null,
            "end_year": 1300,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
      },
      "record_sha256": "617b4ded31d1c2819949d2f9649c4375f83e0755a46824e44651b49529966938"
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    {
      "id": "history:artifact-035b5facc0fb",
      "legacy_id": "artifact-035b5facc0fb",
      "kind": "historical",
      "title": "Appearance of an iceberg seen at a considerable distance on the morning of 6 March 1841 - about 8'30' a.m.",
      "display_title": "Drawing of a distant Antarctic iceberg",
      "display_subtitle": "Historical artifact.",
      "url": "vault.html#artifact-035b5facc0fb",
      "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAE9983.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:035b5facc0fb592ba800",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "6 March 1841",
        "object_date_text": "6 March 1841",
        "sort_start_year": 1841,
        "sort_month": 3,
        "sort_day": 6,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-035b5facc0fb",
        "input_record_sha256": "c07b4e42777f04cc6be718c3afbcde17a912413c8c88635819c02cf24e8183f6",
        "original_fields": {
          "id": "artifact-035b5facc0fb",
          "title": "Appearance of an iceberg seen at a considerable distance on the morning of 6 March 1841 - about 8'30' a.m.",
          "date": "6 March 1841",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124133",
          "accession": "PAE9983",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Ross Antarctic expedition"
          ],
          "description": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAE9983.",
          "visual_url": "https://collections.rmg.co.uk/media/332/608/pv9983.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124133",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Appearance of an iceberg seen at a considerable distance on the morning of 6 March 1841 - about 8'30' a.m.",
          "notes": "One cataloged sketch sheet; not evidence for hidden cities or nonstandard geography.",
          "artifact_id": "PAE9983",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/332/608/pv9983.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition artworks",
          "browsing_group": "artworks",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAE9983.",
          "display_title": "Drawing of a distant Antarctic iceberg",
          "display_subtitle": "Historical artifact.",
          "chronology": {
            "date_label": "6 March 1841",
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            "sort_month": 3,
            "sort_day": 6,
            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      },
      "record_sha256": "d678be27a2cf1ef190a05a334b9b9cd373cef20759faa4f92199f906a64280bf"
    },
    {
      "id": "history:artifact-03c6b0c74a7c",
      "legacy_id": "artifact-03c6b0c74a7c",
      "kind": "historical",
      "title": "BANZARE exploration and survey charts, 1929–1931",
      "display_title": "Mawson’s Antarctic coastal surveys, 1929–1931",
      "display_subtitle": "Charts from the British, Australian and New Zealand Antarctic Research Expedition.",
      "url": "vault.html#artifact-03c6b0c74a7c",
      "summary": "Single sheet records Mawson’s coastal survey work and astronomical position fixes.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e59256601759b479e597",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "August 1932",
        "object_date_text": "August 1932",
        "sort_start_year": 1932,
        "sort_month": 8,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "1929–1931",
          "meaning": "Mawson expedition surveys",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-03c6b0c74a7c",
        "input_record_sha256": "51bcf862d582ae9797ec151f17e745ff17cbe504e3278fd65891c239b2c5a308",
        "original_fields": {
          "id": "artifact-03c6b0c74a7c",
          "title": "BANZARE exploration and survey charts, 1929–1931",
          "date": "August 1932",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Single sheet records Mawson’s coastal survey work and astronomical position fixes.",
          "identifier": "AADC map 3705",
          "creator": "Royal Geographical Society",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 3705",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-03c6b0c74a7c",
            "title": "BANZARE exploration and survey charts, 1929–1931",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3705",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Explorations_surveys_BANZARE_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Single sheet records Mawson’s coastal survey work and astronomical position fixes.",
          "display_title": "Mawson’s Antarctic coastal surveys, 1929–1931",
          "display_subtitle": "Charts from the British, Australian and New Zealand Antarctic Research Expedition.",
          "chronology": {
            "date_label": "August 1932",
            "sort_year": 1932,
            "sort_month": 8,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "1929–1931",
            "meaning": "Mawson expedition surveys",
            "used_for_default_sort": false
          }
        }
      },
      "record_sha256": "c2c22d044d7637c085a813bedfc49950778a132b58a0999905ab5d1481f7fcdc"
    },
    {
      "id": "history:artifact-03f322607c79",
      "legacy_id": "artifact-03f322607c79",
      "kind": "historical",
      "title": "Babylonian Map of the World",
      "display_title": "Babylonian Map of the World",
      "display_subtitle": "Historical representation of a world model.",
      "url": "vault.html#artifact-03f322607c79",
      "summary": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:449a24243cbc4b95a4e0",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5be3f45044c71052b2c7",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:cd5cd2106970bb2fc444",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic photograph of original ancient tablet",
        "asset": {
          "src": "assets/v14/fe05e9ee0497-babylon-map-me92687-mike-peel.jpg",
          "title": "Babylonian Map of the World, British Museum ME 92687",
          "caption": "The original Babylonian Map of the World tablet, British Museum ME 92687, photographed independently by Mike Peel in 2010. The museum dates the tablet to the sixth century BCE. This ancient Mesopotamian cosmographical artifact is not a surveyed map of Antarctica.",
          "credit": "Photograph by Mike Peel (www.mikepeel.net), 27 June 2010, CC BY-SA 4.0. British Museum, ME 92687.",
          "rights": "Independent photographer Mike Peel own-work image, CC BY-SA 4.0. Credit and license link required, modifications disclosed, derivatives under same license. This does not clear British Museum institutional image 471361001 or all museum photography.",
          "source_url": "https://commons.wikimedia.org/wiki/File:Map_of_the_world.jpg",
          "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
          "width": 800,
          "height": 1200,
          "fit": "contain",
          "visual_role": "authentic photograph of original ancient tablet",
          "sha256": "fe05e9ee0497fa2075eef734a37586d686f1ff6353852d6a54982efa59ed3f6c",
          "source_manifest": "image-provenance-v14.json",
          "display_label": null,
          "source_limitations": null,
          "transformations": "Proportional downsize only; complete original supplied frame, physical breaks, display supports and object number retained.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "Independent photographer Mike Peel own-work image, CC BY-SA 4.0. Credit and license link required, modifications disclosed, derivatives under same license. This does not clear British Museum institutional image 471361001 or all museum photography.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c. 6th century BCE",
        "object_date_text": "c. 6th century BCE",
        "sort_start_year": -600,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Century boundary for ordering only; no precise year is asserted.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-03f322607c79",
        "input_record_sha256": "eea86afec18c0c10dce90d9366369972351e3d22230acc14f51dd3f1129bec8d",
        "original_fields": {
          "id": "artifact-03f322607c79",
          "title": "Babylonian Map of the World",
          "creator": "Unknown Babylonian scribe",
          "date": "c. 6th century BCE",
          "institution": "British Museum",
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          "classification": "Cosmological geography",
          "relevance_and_caution": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
          "categories": [
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          ],
          "asset_status": "source-link-only",
          "visual_source": {
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            "official_viewer_url": "https://www.britishmuseum.org/collection/image/471361001",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
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          "label": "record",
          "summary": "Disc and surrounding cosmic waters; ancient worldview, not an Antarctic survey.",
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            "sort_day": null,
            "end_year": -501,
            "date_precision": "century",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Century boundary for ordering only; no precise year is asserted."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
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            "src": "assets/v14/fe05e9ee0497-babylon-map-me92687-mike-peel.jpg",
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            "credit": "Photograph by Mike Peel (www.mikepeel.net), 27 June 2010, CC BY-SA 4.0. British Museum, ME 92687.",
            "rights": "Independent photographer Mike Peel own-work image, CC BY-SA 4.0. Credit and license link required, modifications disclosed, derivatives under same license. This does not clear British Museum institutional image 471361001 or all museum photography.",
            "source_url": "https://commons.wikimedia.org/wiki/File:Map_of_the_world.jpg",
            "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
            "width": 800,
            "height": 1200,
            "fit": "contain",
            "visual_role": "authentic photograph of original ancient tablet",
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            "display_label": null,
            "source_limitations": null,
            "transformations": "Proportional downsize only; complete original supplied frame, physical breaks, display supports and object number retained.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
          },
          "supporting_images": [
            {
              "src": "assets/v14/df73bf4ea70b-babylon-map-me92687-mike-peel-full.jpg",
              "title": "Babylonian Map of the World, British Museum ME 92687",
              "caption": "Full source page / supporting original. The original Babylonian Map of the World tablet, British Museum ME 92687, photographed independently by Mike Peel in 2010. The museum dates the tablet to the sixth century BCE. This ancient Mesopotamian cosmographical artifact is not a surveyed map of Antarctica.",
              "credit": "Photograph by Mike Peel (www.mikepeel.net), 27 June 2010, CC BY-SA 4.0. British Museum, ME 92687.",
              "rights": "Independent photographer Mike Peel own-work image, CC BY-SA 4.0. Credit and license link required, modifications disclosed, derivatives under same license. This does not clear British Museum institutional image 471361001 or all museum photography.",
              "source_url": "https://commons.wikimedia.org/wiki/File:Map_of_the_world.jpg",
              "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
              "width": 2592,
              "height": 3888,
              "fit": "contain",
              "visual_role": "authentic photograph of original ancient tablet",
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              "source_manifest": "image-provenance-v14.json",
              "display_label": null,
              "source_limitations": null,
              "transformations": "Proportional downsize only; complete original supplied frame, physical breaks, display supports and object number retained.",
              "original_exposure_status": null,
              "counts_as_exact_source_coverage": null
            }
          ],
          "sources": [
            {
              "url": "https://commons.wikimedia.org/wiki/File:Map_of_the_world.jpg",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://creativecommons.org/licenses/by-sa/4.0/",
              "role": "image reuse conditions"
            }
          ]
        }
      },
      "record_sha256": "93333ad186966d68c7cf03f185399543fa66a55ffdde60b8d97c8f035bf4b20a"
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    {
      "id": "history:artifact-04894acf9eca",
      "legacy_id": "artifact-04894acf9eca",
      "kind": "historical",
      "title": "Sheet SR 41-42/3, Church Mountain, Mac. Robertson Land, Australian Antarctic Territory",
      "display_title": "Topographic map of Church Mountain, Mac. Robertson Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-04894acf9eca",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:54be55856de36c2c6f81",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-80.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 80. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 41-42/3, Church Mountain, Mac. Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-04894acf9eca"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1970",
        "object_date_text": "March 1970",
        "sort_start_year": 1970,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-04894acf9eca",
        "input_record_sha256": "3d676a587acd23f2fab0b692a8843ceaf1e879352099c218d9bbe2bc1021b22b",
        "original_fields": {
          "id": "artifact-04894acf9eca",
          "artifact_id": "AADC map 80",
          "accession": "AADC map 80",
          "title": "Sheet SR 41-42/3, Church Mountain, Mac. Robertson Land, Australian Antarctic Territory",
          "date": "March 1970",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SR41-42_3_1970_250k_80_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "65 x 60.5 cm",
          "catalog_notes": "single sided.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SR41-42_3_1970_250k_80_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-80.jpg",
            "width": 913,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 80. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=80",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Topographic map of Church Mountain, Mac. Robertson Land",
          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
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            "date_label": "March 1970",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "79dd4d009614346b2ca14d8b78a6c8c429debb3dce800781f0d90617f880914a"
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    {
      "id": "history:artifact-04b8c055fe86",
      "legacy_id": "artifact-04b8c055fe86",
      "kind": "historical",
      "title": "Stove, Primus (parts) — Terra Nova expedition",
      "display_title": "Parts of a Primus expedition stove",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-04b8c055fe86",
      "summary": "Individually cataloged stove, primus (parts) associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1614.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:04b8c055fe86f38a200b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "object_date_text": "circa 1910",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-04b8c055fe86",
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        "original_fields": {
          "id": "artifact-04b8c055fe86",
          "title": "Stove, Primus (parts) — Terra Nova expedition",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212314",
          "accession": "ZBA1614",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Terra Nova expedition"
          ],
          "description": "Individually cataloged stove, primus (parts) associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1614.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Stove, Primus (parts)",
          "notes": "Complete cataloged component group counted once; individual parts not counted separately.",
          "artifact_id": "ZBA1614",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged stove, primus (parts) associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1614.",
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          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "circa 1910",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-04f14e6d76a9",
      "legacy_id": "artifact-04f14e6d76a9",
      "kind": "historical",
      "title": "Thomson using rangefinder",
      "display_title": "Thomson using a rangefinder aboard Scotia",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-04f14e6d76a9",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902",
        "object_date_text": "1902",
        "sort_start_year": 1902,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-04f14e6d76a9",
        "input_record_sha256": "c8ba741736fe239505e2630c3127dda5022f6a0cf1c949fd35a923c471da193e",
        "original_fields": {
          "title": "Thomson using rangefinder",
          "date": "1902",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/584",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-04f14e6d76a9",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-04f14e6d76a9",
            "title": "Thomson using rangefinder",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0584.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
          "display_title": "Thomson using a rangefinder aboard Scotia",
          "display_subtitle": "Archival photograph — Scotia expedition.",
          "chronology": {
            "date_label": "1902",
            "sort_year": 1902,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "9daf24bde941da828f8b520de816bfdad998eb84a934df8247e7ce47013e12f4"
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    {
      "id": "history:artifact-06092f818e21",
      "legacy_id": "artifact-06092f818e21",
      "kind": "historical",
      "title": "Skiers and Russ",
      "display_title": "Scientists skiing with Russ the dog in the Weddell Sea",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-06092f818e21",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-02-22",
        "object_date_text": "1903-02-22",
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        "sort_month": 2,
        "sort_day": 22,
        "date_status": "dated",
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        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
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        "original_fields": {
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          "date": "1903-02-22",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
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          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/521",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-06092f818e21",
          "verification": "Institutional catalog or institutional illustrated collection checked",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
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          "label": "record",
          "summary": "Scottish expedition photograph.",
          "display_title": "Scientists skiing with Russ the dog in the Weddell Sea",
          "display_subtitle": "Archival photograph — Scotia expedition.",
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            "date_label": "1903-02-22",
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            "end_year": null,
            "date_precision": "day",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      },
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    {
      "id": "history:artifact-073c713ef654",
      "legacy_id": "artifact-073c713ef654",
      "kind": "historical",
      "title": "Antarctica Reconnaissance Preliminary Base: Australian Quadrant E2-66-12",
      "display_title": "Preliminary map of Shackleton Ice Shelf and nearby coast",
      "display_subtitle": "The E2-66-12 code identifies the map sheet, not a secret location.",
      "url": "vault.html#artifact-073c713ef654",
      "summary": "Polar-stereographic preliminary base map of Shackleton Ice Shelf and adjacent coast.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:199d6375b629f76be489",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-3515.jpg",
          "caption": "U.S. Geological Survey; reproduction from Australian Antarctic Data Centre, map 3515 (CC BY 4.0). Historical map reproduction, not evidence for modern hidden-land claims. Small institutional preview; no upscaling. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Antarctica Reconnaissance Preliminary Base: Australian Quadrant E2-66-12",
          "href": "vault.html#artifact-073c713ef654"
        },
        "reuse_notice": "USGS-produced work is in U.S. public domain; AADC identifies publisher as U.S. Geological Survey, no contrary notice in record. AADC reproduction under general map CC BY 4.0 policy.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1956",
        "object_date_text": "1956",
        "sort_start_year": 1956,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-073c713ef654",
        "input_record_sha256": "48917cb7b356c62efc813c1a5132bc1f31cdf05659506dbd158ef625d7375894",
        "original_fields": {
          "id": "artifact-073c713ef654",
          "title": "Antarctica Reconnaissance Preliminary Base: Australian Quadrant E2-66-12",
          "date": "1956",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3515",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
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          "description": "Polar-stereographic preliminary base map of Shackleton Ice Shelf and adjacent coast.",
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          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
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            "height": 230,
            "credit": "U.S. Geological Survey; reproduction from Australian Antarctic Data Centre, map 3515 (CC BY 4.0).",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3515",
            "rights": "USGS-produced work is in U.S. public domain; AADC identifies publisher as U.S. Geological Survey, no contrary notice in record. AADC reproduction under general map CC BY 4.0 policy.",
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          },
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          "label": "record",
          "summary": "Polar-stereographic preliminary base map of Shackleton Ice Shelf and adjacent coast.",
          "display_title": "Preliminary map of Shackleton Ice Shelf and nearby coast",
          "display_subtitle": "The E2-66-12 code identifies the map sheet, not a secret location.",
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            "date_label": "1956",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-0812ecdb88a9",
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      "kind": "historical",
      "title": "Christmas Harbour, Kergeulen Island — Ross Antarctic expedition",
      "display_title": "Drawing of Christmas Harbour, Kerguelen Island",
      "display_subtitle": "Historical artifact.",
      "url": "vault.html#artifact-0812ecdb88a9",
      "summary": "Individually cataloged drawing associated by Royal Museums Greenwich with the Ross Antarctic expedition; accession PAF0587.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1840",
        "object_date_text": "1840",
        "sort_start_year": 1840,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
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          "date": "1840",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124722",
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          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
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          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-124722",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
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          "visual_status": "primary-image-link-delivery-unverified",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
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          "browsing_group": "artworks",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-09546644b849",
      "legacy_id": "artifact-09546644b849",
      "kind": "historical",
      "title": "\"Ponko\" the Penguin — Terra Nova expedition",
      "display_title": "Ponko the stuffed toy penguin",
      "display_subtitle": "A stuffed toy associated with the Terra Nova expedition, not a live penguin specimen.",
      "url": "vault.html#artifact-09546644b849",
      "summary": "Individually cataloged toy, stuffed associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1691.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "After 1913",
        "object_date_text": "After 1913",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "after",
        "date_note": "1913 is an exclusive lower bound, not the artifact date.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
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        "input_record_sha256": "c2288949c8c9cccca2e9e68b4ffad4ed194860e34b2e57338293f3959f0f6924",
        "original_fields": {
          "id": "artifact-09546644b849",
          "title": "\"Ponko\" the Penguin — Terra Nova expedition",
          "date": "After 1913",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-233629",
          "accession": "ZBA1691",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Terra Nova expedition"
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          "description": "Individually cataloged toy, stuffed associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1691.",
          "visual_url": "https://collections.rmg.co.uk/media/3/289/672/l9494_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-233629",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "\"Ponko\" the Penguin",
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          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/289/672/l9494_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
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          "browsing_group": "commemorations",
          "browse_topic": "Objects & expedition gear",
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          "label": "record",
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          "display_subtitle": "A stuffed toy associated with the Terra Nova expedition, not a live penguin specimen.",
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            "date_label": "After 1913",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "open-ended",
            "date_status": "after",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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    {
      "id": "history:artifact-09f57ecffc57",
      "legacy_id": "artifact-09f57ecffc57",
      "kind": "historical",
      "title": "Sheet SQ 38-39/14 Tange Promontory, Enderby Land, Australian Antarctic Territory [SQ 37-38/16]",
      "display_title": "Topographic map of Tange Promontory, Enderby Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-09f57ecffc57",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:b7716c4129361c8647c5",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-107.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 107. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/14 Tange Promontory, Enderby Land, Australian Antarctic Territory [SQ 37-38/16]",
          "href": "vault.html#artifact-09f57ecffc57"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "August 1962",
        "object_date_text": "August 1962",
        "sort_start_year": 1962,
        "sort_month": 8,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-09f57ecffc57",
        "input_record_sha256": "6ece3e2a0cda7c403b3d3e101c2b1255cebbc304156ae2e0908f643d1c3ba782",
        "original_fields": {
          "id": "artifact-09f57ecffc57",
          "artifact_id": "AADC map 107",
          "accession": "AADC map 107",
          "title": "Sheet SQ 38-39/14 Tange Promontory, Enderby Land, Australian Antarctic Territory [SQ 37-38/16]",
          "date": "August 1962",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_14_1962_250k_107_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "69.5 x 64.5 cm",
          "catalog_notes": "Tange Promontory SQ 38-39/14 have been numbered according to a map numbering system adopted by Department of National Mapping in 1962 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 37-38/16.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_14_1962_250k_107_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-107.jpg",
            "width": 893,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 107. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=107",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Topographic map of Tange Promontory, Enderby Land",
          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
          "chronology": {
            "date_label": "August 1962",
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "997a73644f4ccbe77cc4d6f9d29aaede0116f715ac5453d12946fb9504199713"
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    {
      "id": "history:artifact-0a1c7f08d4da",
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      "title": "Sheet SR 40-41/2 Hansen Mountains, Kemp Land, Australian Antarctic Territory [SR 39-40/4]",
      "display_title": "Topographic map of Hansen Mountains, Kemp Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-0a1c7f08d4da",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
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        }
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      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
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          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 84. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 40-41/2 Hansen Mountains, Kemp Land, Australian Antarctic Territory [SR 39-40/4]",
          "href": "vault.html#artifact-0a1c7f08d4da"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June 1966",
        "object_date_text": "June 1966",
        "sort_start_year": 1966,
        "sort_month": 6,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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        "original_fields": {
          "id": "artifact-0a1c7f08d4da",
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          "accession": "AADC map 84",
          "title": "Sheet SR 40-41/2 Hansen Mountains, Kemp Land, Australian Antarctic Territory [SR 39-40/4]",
          "date": "June 1966",
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            "topographic-survey"
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          "scale": "1 : 250 000",
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          "projection": "Universal Transverse Mercator",
          "physical_size": "67 x 67 cm",
          "catalog_notes": "Hansen Mountains SQ 40-41/2 have been numbered according to a map numbering system adopted by Department of National Mapping in 1967 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SR 39-40/4.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SR40-41_2_1966_250k_84_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
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          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
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          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
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            "height": 960,
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            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=84",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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          },
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          "label": "record",
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          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
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            "date_label": "June 1966",
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            "sort_month": 6,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "9c2b4788be6a3b0ee0e8e58153afebc718d4323c6a1df20d0737afaf90913373"
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    {
      "id": "history:artifact-0a22bcff3b65",
      "legacy_id": "artifact-0a22bcff3b65",
      "kind": "historical",
      "title": "Omond meteorological screen",
      "display_title": "Weather-observation shelter at Omond House",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-0a22bcff3b65",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-02-19",
        "object_date_text": "1904-02-19",
        "sort_start_year": 1904,
        "sort_month": 2,
        "sort_day": 19,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0a22bcff3b65",
        "input_record_sha256": "651eb7b5d58e7cb622c7433f7b572ddf3a114e3c7a225aa1f5055d303931d06e",
        "original_fields": {
          "title": "Omond meteorological screen",
          "date": "1904-02-19",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/228",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-0a22bcff3b65",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-0a22bcff3b65",
            "title": "Omond meteorological screen",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0228.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
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          "label": "record",
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          "display_title": "Weather-observation shelter at Omond House",
          "display_subtitle": "Archival photograph — Scotia expedition.",
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            "date_label": "1904-02-19",
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            "sort_month": 2,
            "sort_day": 19,
            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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    {
      "id": "history:artifact-0b16175e00c1",
      "legacy_id": "artifact-0b16175e00c1",
      "kind": "historical",
      "title": "Parka — Australasian Antarctic Expedition",
      "display_title": "Parka — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-0b16175e00c1",
      "summary": "Individually cataloged parka associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4264.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0b16175e00c1",
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        "original_fields": {
          "id": "artifact-0b16175e00c1",
          "title": "Parka — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4019",
          "accession": "AAA4264",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged parka associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4264.",
          "visual_url": "https://collections.rmg.co.uk/media/3/478/128/s3525_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4019",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Parka",
          "notes": "",
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          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/478/128/s3525_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition equipment and relics",
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          "label": "record",
          "summary": "Individually cataloged parka associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4264.",
          "display_title": "Parka — Australasian Antarctic Expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": 1914,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "fef0560814770f98785b04e46e9464e9737d1de2bd5ca493ff51edc68018ddc5"
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    {
      "id": "history:artifact-0b9c529be2db",
      "legacy_id": "artifact-0b9c529be2db",
      "kind": "historical",
      "title": "Fitchie Bay camp",
      "display_title": "Expedition camp at Fitchie Bay",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-0b9c529be2db",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1903-10-14",
        "object_date_text": "circa 1903-10-14",
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        "sort_day": 14,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
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          "date": "circa 1903-10-14",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
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            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/300",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-0b9c529be2db",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-0b9c529be2db",
            "title": "Fitchie Bay camp",
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            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
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            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
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            "sort_month": 10,
            "sort_day": 14,
            "end_year": null,
            "date_precision": "day",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-0ba166081b8e",
      "legacy_id": "artifact-0ba166081b8e",
      "kind": "historical",
      "title": "Discoveries in Graham Land by Sir Hubert Wilkins, December, 1928.",
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      "display_subtitle": "Published in 1929; depicts discoveries made in December 1928.",
      "url": "vault.html#artifact-0ba166081b8e",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 6 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1929",
        "object_date_text": "March-1929",
        "sort_start_year": 1929,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
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          "meaning": "Wilkins discoveries",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-0ba166081b8e",
        "input_record_sha256": "51422318466cda3f4e1d8817853d9d07a99e2d5756385be55d989de101aa06db",
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          "id": "artifact-0ba166081b8e",
          "artifact_id": "AADC map 3702",
          "accession": "AADC map 3702",
          "title": "Discoveries in Graham Land by Sir Hubert Wilkins, December, 1928.",
          "date": "March-1929",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3702",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
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          "description": "A separately catalogued expedition or regional map; scale 1 : 6 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 6 250 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 6 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Wilkins’s 1928 discoveries in Graham Land — map",
          "display_subtitle": "Published in 1929; depicts discoveries made in December 1928.",
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            "date_label": "March-1929",
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            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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            "label": "December 1928",
            "meaning": "Wilkins discoveries",
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      "title": "J.I. Moore with crabeater seal",
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      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
      "url": "vault.html#artifact-0baf52a53a36",
      "summary": "Cataloged expedition photograph: Moore stands next to a seal which is lying on the ice. Harnessed sled dog team sits on the snow behind. Mountains in the far distance.",
      "claim": null,
      "topics": [
        "Expedition photographs"
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
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          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "object_date_text": "1936",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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        "input": "reader-data.json",
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          "artifact_id": "P51/8/H196",
          "title": "J.I. Moore with crabeater seal",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Hampton, Wilfred Edward",
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          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-h196",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "categories": [
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            "British Graham Land Expedition 1934-37",
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          "description": "Cataloged expedition photograph: Moore stands next to a seal which is lying on the ice. Harnessed sled dog team sits on the snow behind. Mountains in the far distance.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
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          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore stands next to a seal which is lying on the ice. Harnessed sled dog team sits on the snow behind. Mountains in the far distance.",
          "display_title": "Moore beside a crabeater seal",
          "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
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            "date_label": "1936",
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            "sort_day": null,
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            "date_status": "dated",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:337720a704a447201da2",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:33ce74a3219271837b46",
          "role": "image reuse conditions",
          "supports_claim_truth": null
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          "rights": "Commons explicitly Public Domain Mark 1.0, PD-old-70-expired and US public domain; saved file description.",
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          "rights_url": "https://commons.wikimedia.org/wiki/File:%D0%90%D1%82%D0%BB%D0%B0%D1%81.png",
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          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "Commons explicitly Public Domain Mark 1.0, PD-old-70-expired and US public domain; saved file description.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "artifact_date_text": "1831",
        "object_date_text": "1831",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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          "used_for_default_sort": false
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        "review_date_basis": "not recorded",
        "content_modified_at": null,
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      "provenance": {
        "input": "reader-data.json",
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          "institution": "Russian Geographical Society",
          "source_url": "https://elib.rgo.ru/handle/123456789/233491",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
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            "visual_status": "primary-viewer-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact original-atlas viewer extracted from RGO record; delivery not tested."
          },
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          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Atlas records the 1819–1821 southern voyage.",
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          "display_subtitle": "Historical regional or expedition map.",
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            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [
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      "title": "The World, on Mercator’s Projection",
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      "url": "vault.html#artifact-101236a3df0c",
      "summary": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
      "claim": null,
      "topics": [
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        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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          "title": "The World, on Mercator’s Projection",
          "caption": "Historical map from the 1840 General Atlas of the World. Antarctica is not depicted; absence reflects contemporary cartographic coverage, not proof of concealment.",
          "credit": "George Aikman, engraver; Adam and Charles Black, Edinburgh (1840). Qatar National Library, World Digital Library / Library of Congress, LCCN 2021668708.",
          "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
          "source_url": "https://www.loc.gov/item/2021668708/",
          "rights_url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
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          "source_manifest": "image-provenance-v13.json"
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "object_date_text": "1840",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-101236a3df0c",
          "title": "The World, on Mercator’s Projection",
          "creator": "A & C Black",
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          "classification": "Mercator projection",
          "relevance_and_caution": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
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          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
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          "description": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
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          "browsing_scopes": [
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          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
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          "kind": "historical",
          "label": "record",
          "summary": "Antarctic omission reflects incomplete polar mapping; it does not imply physical nonexistence.",
          "display_image": {
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            "title": "The World, on Mercator’s Projection",
            "caption": "Historical map from the 1840 General Atlas of the World. Antarctica is not depicted; absence reflects contemporary cartographic coverage, not proof of concealment.",
            "credit": "George Aikman, engraver; Adam and Charles Black, Edinburgh (1840). Qatar National Library, World Digital Library / Library of Congress, LCCN 2021668708.",
            "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
            "source_url": "https://www.loc.gov/item/2021668708/",
            "rights_url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
            "width": 1200,
            "height": 760,
            "fit": "contain",
            "visual_role": "historical reproduction",
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          "sources": [
            {
              "url": "https://www.loc.gov/item/2021668708/",
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            },
            {
              "url": "https://www.loc.gov/resource/gdcwdl.wdl_17585/",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "The World, on Mercator’s Projection",
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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    {
      "id": "history:artifact-114b3e3fd106",
      "legacy_id": "artifact-114b3e3fd106",
      "kind": "historical",
      "title": "Principia philosophiae vortex diagram",
      "display_title": "Descartes’s diagram of planetary motion in vortices",
      "display_subtitle": "An early planetary theory shown as swirling matter.",
      "url": "vault.html#artifact-114b3e3fd106",
      "summary": "Historical planetary theory, not polar geography.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1644",
        "object_date_text": "1644",
        "sort_start_year": 1644,
        "sort_month": null,
        "sort_day": null,
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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      "provenance": {
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          "relevance_and_caution": "Historical planetary theory, not polar geography.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
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          "description": "Historical planetary theory, not polar geography.",
          "categories": [
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          "visual_source": {
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_group": "celestial-diagrams",
          "browse_topic": "Cosmology & celestial charts",
          "kind": "historical",
          "label": "record",
          "summary": "Historical planetary theory, not polar geography.",
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      "url": "vault.html#artifact-11a6e51e04f7",
      "summary": "Fine’s double-heart world map, distinct from the 1534 single-heart map already in the collection. Its conjectural southern land is not a verified Antarctic survey.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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          "source_id": "source:1e04c472d1e3ad667d4a",
          "role": "image reproduction provenance; not proof of a linked interpretation",
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        },
        {
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          "role": "image reuse conditions",
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        "embedded": true,
        "role": "historical reproduction",
        "asset": {
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          "title": "Noua, et integra uniuersi orbis descriptio",
          "caption": "Finé’s world map, cataloged 1531, Library of Congress copy with Hermannus Venraed inscription. Do not label first state. Conjectural Terra Australis is not proof of an ice-free Antarctic survey.",
          "credit": "Oronce Finé (1531). Library of Congress, Geography and Map Division, G3200 1531 .F5, LCCN 2005630228; World Digital Library.",
          "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
          "source_url": "https://www.loc.gov/item/2005630228/",
          "rights_url": "https://www.loc.gov/resource/g3200.ct001393/?sp=1",
          "width": 1200,
          "height": 819,
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          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1531 signature; [1532] cataloged impression",
        "object_date_text": "1531 signature; [1532] cataloged impression",
        "sort_start_year": 1532,
        "sort_month": null,
        "sort_day": null,
        "date_status": "qualified",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "cataloged impression",
        "related_date": {
          "label": "1531",
          "meaning": "design/signature date; cataloged BnF impression [1532]. The displayed LOC reproduction is a different holding; see its caption.",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
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          "title": "Oronce Fine: Nova et integra universi orbis descriptio",
          "date": "1531 signature; [1532] cataloged impression",
          "institution": "Bibliothèque nationale de France",
          "source_url": "https://catalogue.bnf.fr/ark:/12148/cb40699514m",
          "accession": "GE D-6440 (RES)",
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          ],
          "description": "Fine’s double-heart world map, distinct from the 1534 single-heart map already in the collection. Its conjectural southern land is not a verified Antarctic survey.",
          "rights": "Specific scan reuse is not cleared; external viewer only.",
          "embed_allowed": false,
          "official_viewer_url": "https://gallica.bnf.fr/ark:/12148/btv1b55005237j",
          "direct_image_url": null,
          "edition_note": "Signature/design date1531; this BnF impression is cataloged [1532].",
          "provenance": "Lead in user-supplied Claude HIST array; metadata independently checked against primary repositories during prior primary-source audit in this research thread; do not import supplied claims or rights wholesale.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
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            "world-map-traditions"
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          "kind": "historical",
          "label": "record",
          "summary": "Fine’s double-heart world map, distinct from the 1534 single-heart map already in the collection. Its conjectural southern land is not a verified Antarctic survey.",
          "display_image": {
            "src": "assets/v13/c70a98a76d04-artifact-11a6e51e04f7.jpg",
            "title": "Noua, et integra uniuersi orbis descriptio",
            "caption": "Finé’s world map, cataloged 1531, Library of Congress copy with Hermannus Venraed inscription. Do not label first state. Conjectural Terra Australis is not proof of an ice-free Antarctic survey.",
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            "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
            "source_url": "https://www.loc.gov/item/2005630228/",
            "rights_url": "https://www.loc.gov/resource/g3200.ct001393/?sp=1",
            "width": 1200,
            "height": 819,
            "fit": "contain",
            "visual_role": "historical reproduction",
            "sha256": "c70a98a76d0467e4422edd03f6d7bfccfb013b1104e9684e445017cc8182d47d",
            "source_manifest": "image-provenance-v13.json"
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          "supporting_images": [],
          "sources": [
            {
              "url": "https://www.loc.gov/item/2005630228/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/g3200.ct001393/?sp=1",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Oronce Fine’s double-heart world map",
          "display_subtitle": "Design signed 1531; this impression is cataloged [1532], distinct from the 1534 map.",
          "chronology": {
            "date_label": "1531 signature; [1532] cataloged impression",
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            "sort_month": null,
            "sort_day": null,
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            "date_precision": "year",
            "date_status": "qualified",
            "date_basis": "cataloged impression",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [
            "Design date 1531 and cataloged impression [1532] are different events; sort the displayed impression as 1532."
          ],
          "related_date": {
            "label": "1531",
            "meaning": "design/signature date; cataloged BnF impression [1532]. The displayed LOC reproduction is a different holding; see its caption.",
            "used_for_default_sort": false
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      "record_sha256": "a98ec0831c5f60be7bf621c2ba4774a10fb1d9b05dd28714d8afcb2211ee1804"
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    {
      "id": "history:artifact-1202893c6734",
      "legacy_id": "artifact-1202893c6734",
      "kind": "historical",
      "title": "Elephant Island : From a survey by the Joint Services Expedition, December 1970.",
      "display_title": "Elephant Island map from the 1970 expedition survey",
      "display_subtitle": "Published in 1972 from the December 1970 survey.",
      "url": "vault.html#artifact-1202893c6734",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 132 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d23f40338b568ac3a35f",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September 1972",
        "object_date_text": "September 1972",
        "sort_start_year": 1972,
        "sort_month": 9,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "December 1970",
          "meaning": "Elephant Island survey",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-1202893c6734",
        "input_record_sha256": "c1b9950fe30a42064a38a6071b4f3c97d72c9b8dc35be9519e61b498cbedfd3e",
        "original_fields": {
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          "artifact_id": "AADC map 3722",
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          "date": "September 1972",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3722",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 132 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Elephant_Island_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3722",
          "embed_allowed": false,
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          "scale": "1 : 132 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "24.8 x 40.5 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Elephant_Island_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
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          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
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          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 132 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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            "sort_day": null,
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            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-12148f17603a",
      "legacy_id": "artifact-12148f17603a",
      "kind": "historical",
      "title": "V.D. Carse taking rations to ship August 3, 1935",
      "display_title": "Carse transporting food supplies to the ship",
      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
      "url": "vault.html#artifact-12148f17603a",
      "summary": "Cataloged expedition photograph: Carse pushes a sledge laden with barrels and boxes in front of an ice wall.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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      "visual": {
        "embedded": false,
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        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "object_date_text": "1935",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-12148f17603a",
          "artifact_id": "P51/8/F120",
          "title": "V.D. Carse taking rations to ship August 3, 1935",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f120",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
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            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Carse pushes a sledge laden with barrels and boxes in front of an ice wall.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Carse pushes a sledge laden with barrels and boxes in front of an ice wall.",
          "display_title": "Carse transporting food supplies to the ship",
          "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
          "chronology": {
            "date_label": "1935",
            "sort_year": 1935,
            "sort_month": null,
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            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      },
      "record_sha256": "6eea366311c68fd9309e04b00a24783b7500552353a81a3ef33912f508580471"
    },
    {
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      "title": "Karta Mira, sheet 234",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
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      "claim": null,
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      "assessment": {
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          "title": "Sheets SQ 40-41/16 & Part SR 40-41/4 Mount Henderson & Anniversary Nunataks, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/14]",
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      "dates": {
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      "claim": null,
      "topics": [
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        "label": "record",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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      "url": "vault.html#artifact-1588aa624eb9",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
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      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "review_date_basis": "not recorded",
        "content_modified_at": null,
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          "categories": [
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        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-86.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 86. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 40-41/14 Law Promontory, Kemp Land, Australian Antarctic Territory [SQ 39-40/16]",
          "href": "vault.html#artifact-1ada3b2d9212"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May 1966",
        "object_date_text": "May 1966",
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        "sort_month": 5,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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        "input_record_sha256": "13127b748818e063da78b361ddfdf16378eb5c360230a1c6c0707340122672fa",
        "original_fields": {
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          "accession": "AADC map 86",
          "title": "Sheet SQ 40-41/14 Law Promontory, Kemp Land, Australian Antarctic Territory [SQ 39-40/16]",
          "date": "May 1966",
          "institution": "Australian Antarctic Data Centre",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
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          "scale": "1 : 250 000",
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          "asset_status": "source-link-only",
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            "height": 960,
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            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
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            "date_precision": "month",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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      "record_sha256": "9bffc40bd44ea5a9f25a43240ad6de5c0560a692825512d82a5b539417261ff9"
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      "claim": null,
      "topics": [
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      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
        "object_date_text": "1902–1904",
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          "description": "Scottish expedition photograph.",
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            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
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      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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          "rights": "Digital Library of India metadata explicitly dc.rights: Out_of_copyright.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "object_date_text": "June 1900",
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        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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      "provenance": {
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          "primary_category": "Printed expedition maps",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "classification": "Biblical world diagram",
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          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
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          "description": "Three continents assigned to Noah’s sons; sacred history rather than polar observation.",
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            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Official folio page identifies1220 manuscript and offers image download. Image endpoint did not load in tool; viewer verified."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-1fa31e4512f1",
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      "kind": "historical",
      "title": "Saucer as used on Captain Robert Falcon Scott's Antarctic expedition of 1910",
      "display_title": "Saucer used on Scott’s Antarctic expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-1fa31e4512f1",
      "summary": "Individually cataloged saucer associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA5379.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "object_date_text": "circa 1910",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
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          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
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          "visual_status": "verified-primary-image-link; image-endpoint-responded",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
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          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "sort_day": null,
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
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      "legacy_id": "artifact-2027de15d73d",
      "kind": "historical",
      "title": "Cosmographia world map",
      "display_title": "Ptolemy’s world map in a fifteenth-century edition",
      "display_subtitle": "A 1482 printed map based on ancient geographical writing.",
      "url": "vault.html#artifact-2027de15d73d",
      "summary": "Classical geographical knowledge, not Antarctic surveying.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bfd7ebe44c285d6d43ad",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5c2cf8fa36c64e459540",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:bfd7ebe44c285d6d43ad",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "historical reproduction",
        "asset": {
          "src": "assets/v13/e95dcd16aaed-artifact-2027de15d73d-thumb.jpg",
          "title": "Cosmographia world map",
          "caption": "Classical geographical knowledge, not Antarctic surveying.",
          "credit": "Library of Congress, Rare Book and Special Collections Division.",
          "rights": "LOC states no known US copyright or other restrictions.",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
          "rights_url": "https://www.loc.gov/item/48042060/",
          "width": 800,
          "height": 560,
          "fit": "contain",
          "visual_role": "historical reproduction",
          "sha256": "e95dcd16aaedb98c30f7c21d4ee4c995bbda9f0d486f5dce84b6d43a24b9ade9",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC states no known US copyright or other restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1482",
        "object_date_text": "1482",
        "sort_start_year": 1482,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2027de15d73d",
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        "original_fields": {
          "id": "artifact-2027de15d73d",
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          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s116.jpg",
          "classification": "Ptolemaic cartography",
          "relevance_and_caution": "Classical geographical knowledge, not Antarctic surveying.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Classical geographical knowledge, not Antarctic surveying.",
          "categories": [
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          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-2027de15d73d",
            "title": "Cosmographia world map",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s116.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
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          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Classical geographical knowledge, not Antarctic surveying.",
          "display_image": {
            "src": "assets/v13/e95dcd16aaed-artifact-2027de15d73d-thumb.jpg",
            "title": "Cosmographia world map",
            "caption": "Classical geographical knowledge, not Antarctic surveying.",
            "credit": "Library of Congress, Rare Book and Special Collections Division.",
            "rights": "LOC states no known US copyright or other restrictions.",
            "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
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            "height": 560,
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          },
          "supporting_images": [
            {
              "src": "assets/v13/251c2f4b5053-s116.jpg",
              "title": "Cosmographia world map",
              "caption": "Full source page / supporting original. Classical geographical knowledge, not Antarctic surveying.",
              "credit": "Library of Congress, Rare Book and Special Collections Division.",
              "rights": "LOC states no known US copyright or other restrictions.",
              "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
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              "height": 560,
              "fit": "contain",
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              "sha256": "251c2f4b505350bfaf03de88b47f5fb9eefa39ac56cd849ae526591599985f0f",
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          ],
          "sources": [
            {
              "url": "https://www.loc.gov/exhibits/world/earth.html#obj116",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/item/48042060/",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Ptolemy’s world map in a fifteenth-century edition",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "bd8a8eabc3f394cc5c72264dea31fb3fa92b59b36c8cf817410512e082b268ee"
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    {
      "id": "history:artifact-203050227049",
      "legacy_id": "artifact-203050227049",
      "kind": "historical",
      "title": "The Course of Antarctic Exploration Between Longitudes 20°W and 110°E.",
      "display_title": "Antarctic exploration routes between 20°W and 110°E",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-203050227049",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f32dbb435c324e7060f8",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September-1939",
        "object_date_text": "September-1939",
        "sort_start_year": 1939,
        "sort_month": 9,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-203050227049",
        "input_record_sha256": "88f830bd5a707e4c658d13982bbbfe9c894b97e6d6e1c689e7d83e763047d55a",
        "original_fields": {
          "id": "artifact-203050227049",
          "artifact_id": "AADC map 3715",
          "accession": "AADC map 3715",
          "title": "The Course of Antarctic Exploration Between Longitudes 20°W and 110°E.",
          "date": "September-1939",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3715",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 3 000 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Antarctic exploration routes between 20°W and 110°E",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "September-1939",
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            "sort_month": 9,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      },
      "record_sha256": "b3bcef17720f4be72f05fdc739308dee7b31288c9c2f55718010f810512abf61"
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    {
      "id": "history:artifact-207427ba3761",
      "legacy_id": "artifact-207427ba3761",
      "kind": "historical",
      "title": "Regional Map showing the area covered by the Australasian Antarctic Expedition 1911-14 under Sir Douglas Mawson",
      "display_title": "Mawson expedition’s Antarctic exploration area",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-207427ba3761",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "source_id": "source:e640bce2a69b5916edaa",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1914",
        "object_date_text": "1914",
        "sort_start_year": 1914,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "1911–1914",
          "meaning": "Australasian Antarctic Expedition",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-207427ba3761",
        "input_record_sha256": "8f9d98a6a372159bc07b33744f27a05d886982893f9d170c46ed07e7dcecb345",
        "original_fields": {
          "id": "artifact-207427ba3761",
          "artifact_id": "AADC map 3696",
          "accession": "AADC map 3696",
          "title": "Regional Map showing the area covered by the Australasian Antarctic Expedition 1911-14 under Sir Douglas Mawson",
          "date": "1914",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3696",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/AAE_1911-14_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3696",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 15 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "38 x 39 cm",
          "catalog_notes": "Includes tracks of the \"Aurora\" and most of the deep-sea soundings. Modified conical projection with rectified meridians and errorless parallels 40 deg. and 70 deg.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/AAE_1911-14_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 15 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Mawson expedition’s Antarctic exploration area",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "1914",
            "sort_year": 1914,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "1911–1914",
            "meaning": "Australasian Antarctic Expedition",
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          }
        }
      },
      "record_sha256": "84e3be37141dd3c3c4ab87178bf4406f0eee888b03db6ea08694c19cbf24549c"
    },
    {
      "id": "history:artifact-20a39105f356",
      "legacy_id": "artifact-20a39105f356",
      "kind": "historical",
      "title": "Apollo 17 Blue Marble exposure",
      "display_title": "Earth from Apollo 17 — the Blue Marble photograph",
      "display_subtitle": "Archival expedition photograph.",
      "url": "vault.html#artifact-20a39105f356",
      "summary": "Astronaut photograph includes the illuminated Antarctic ice cap.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "source_id": "source:877db2ee3bebdcb6e9af",
          "role": "institutional or documentary record",
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      "visual": {
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          "sha256": "d7d31095a71ad8ab65d78affed2ca5f16902e7a8f517a82bf048be10ccea0d42",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC Geography and Map Division: free to use and reuse; no contrary Rights Advisory found.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1830",
        "object_date_text": "1830",
        "sort_start_year": 1830,
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        "sort_day": null,
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        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
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      },
      "provenance": {
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          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s77.jpg",
          "classification": "Buddhist cosmological map",
          "relevance_and_caution": "Heavens and hells contextualize a geographical world.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Heavens and hells contextualize a geographical world.",
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          "asset_status": "source-link-only",
          "visual_source": {
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            "official_viewer_url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s77.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
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          "label": "record",
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            "credit": "Library of Congress, Geography and Map Division",
            "rights": "LOC Geography and Map Division: free to use and reuse; no contrary Rights Advisory found.",
            "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
            "rights_url": "https://www.loc.gov/resource/g3200.ct004321b/",
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          "supporting_images": [
            {
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              "title": "Sekai daisō no zu",
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              "credit": "Library of Congress, Geography and Map Division",
              "rights": "LOC Geography and Map Division: free to use and reuse; no contrary Rights Advisory found.",
              "source_url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
              "rights_url": "https://www.loc.gov/resource/g3200.ct004321b/",
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              "height": 800,
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              "visual_role": "historical reproduction",
              "sha256": "0c231017e89ea513798ddda0e7c56fa9b068efb57c7189f03ce673ed1a7807bc",
              "source_manifest": "image-provenance-v13.json"
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          ],
          "sources": [
            {
              "url": "https://www.loc.gov/exhibits/world/heavens.html#obj77",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/g3200.ct004321b/",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Japanese Buddhist diagram of the world, heavens and hells",
          "display_subtitle": "A religious cosmological scroll from Japan.",
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            "date_label": "1830",
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
      },
      "record_sha256": "8292ca0663f513a4857aeccda2b37b1ff53857c8bebf1d4a693c084ab51a1e11"
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    {
      "id": "history:artifact-27996b29dfd3",
      "legacy_id": "artifact-27996b29dfd3",
      "kind": "historical",
      "title": "A.A.E. Western Base",
      "display_title": "Western Base map — Australasian Antarctic Expedition",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-27996b29dfd3",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 21, 61cm x 101cm. Harrison Islet. Shackleton Glacier. Queen Mary Land.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-1913",
        "object_date_text": "1911-1913",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-27996b29dfd3",
        "input_record_sha256": "33f8338c9d22b2ab99f87837fbcb34861db24c7a55cf4b5bd6e226e42c95d72f",
        "original_fields": {
          "id": "artifact-27996b29dfd3",
          "artifact_id": "SLNSW AAE map 21",
          "accession": "Australasian Antarctic Expedition records, map 21",
          "title": "A.A.E. Western Base",
          "date": "1911-1913",
          "creator": "Dovers, George H. S. Kennedy, Alexander L.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 21, 61cm x 101cm. Harrison Islet. Shackleton Glacier. Queen Mary Land.",
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          "official_viewer_url": "http://digital.sl.nsw.gov.au/delivery/DeliveryManagerServlet?embedded=true&toolbar=false&dps_pid=IE3756274",
          "embed_allowed": false,
          "verification_status": "Inventory item verified; linked legacy scan delivery unverified.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "primary-viewer-link-delivery-unverified",
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          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; linked legacy scan delivery unverified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 21, 61cm x 101cm. Harrison Islet. Shackleton Glacier. Queen Mary Land.",
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          "display_subtitle": "Historical regional or expedition map.",
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            "sort_day": null,
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
      },
      "record_sha256": "1315acb863a806b7bd35fcb1d26ec1cc4241f2e3276f007fdf96151623155e73"
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    {
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      "legacy_id": "artifact-2884ddbaa3fb",
      "kind": "historical",
      "title": "Frank Debenham grinding Geological specimens. July 12th 1911",
      "display_title": "Frank Debenham grinding rock specimens",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
      "url": "vault.html#artifact-2884ddbaa3fb",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Debenham sits at a trunk, on which lies a flat board. Debenham rubs stones onto the board. Behind is a bench on which stands various scientific equipment. Books and other paraphenalia are stacked on shelves.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "7.1911",
        "object_date_text": "7.1911",
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        "sort_month": 7,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2884ddbaa3fb",
        "input_record_sha256": "6d7e4f267ff96511d3bd1fcb292824337d2ca398d46a304d9fe6a23a93b96e17",
        "original_fields": {
          "id": "artifact-2884ddbaa3fb",
          "artifact_id": "P2005/5/458",
          "title": "Frank Debenham grinding Geological specimens. July 12th 1911",
          "date": "7.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-458",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
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          "summary": "Cataloged expedition photograph: In the interior of the hut, Debenham sits at a trunk, on which lies a flat board. Debenham rubs stones onto the board. Behind is a bench on which stands various scientific equipment. Books and other paraphenalia are stacked on shelves.",
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            "sort_day": null,
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "4a0225a251b22007c8b556cdbbeed3554ddc018c7395aa3f7c02e2f55c92c38b"
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    {
      "id": "history:artifact-2a2b5c091759",
      "legacy_id": "artifact-2a2b5c091759",
      "kind": "historical",
      "title": "British Antarctic Territory : Alexander Island and Charcot Island",
      "display_title": "Map of Alexander Island and Charcot Island",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-2a2b5c091759",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "June-1963",
        "object_date_text": "June-1963",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "artifact_id": "AADC map 3719",
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          "date": "June-1963",
          "institution": "Australian Antarctic Data Centre",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 1 000 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Map of Alexander Island and Charcot Island",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "June-1963",
            "sort_year": 1963,
            "sort_month": 6,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "f4369b3b8a19998416b8b8d516795135daada2540f6a07ea21fea74ddb4b6877"
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    {
      "id": "history:artifact-2ac1bffbefc6",
      "legacy_id": "artifact-2ac1bffbefc6",
      "kind": "historical",
      "title": "Southern icefoot, Cape Adare, April 1911",
      "display_title": "Shore ice along Cape Adare",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Debenham Collection).",
      "url": "vault.html#artifact-2ac1bffbefc6",
      "summary": "Cataloged expedition photograph: View along coast with steep cliff, ice shelf and weathered icebergs.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-2ac1bffbefc6",
        "input_record_sha256": "07715f89b46be0637f625fe2b0648dfde79155f16a1238a33d067d185ec7ac6a",
        "original_fields": {
          "id": "artifact-2ac1bffbefc6",
          "artifact_id": "P54/16/643",
          "title": "Southern icefoot, Cape Adare, April 1911",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Debenham, Frank",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-debenham-collection/p54-16-643",
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          "visual_status": "institutional-image-record-delivery-unverified",
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          "title": "Getting the ill-fated motor-sledge off the ship. Jan. 8th 1911.",
          "caption": "Landing a motor-sledge. Public-domain 1913 book reproduction.",
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          "title": "Getting the ill-fated motor-sledge off the ship. Jan. 8th 1911.",
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              "title": "Getting the ill-fated motor-sledge off the ship. Jan. 8th 1911.",
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      "kind": "historical",
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      "summary": "Individually cataloged ration bags associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1615.",
      "claim": null,
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        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
        "artifact_date_text": "1898",
        "object_date_text": "1898",
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        "date_status": "dated",
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
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            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
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          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
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            "date_label": "1898",
            "sort_year": 1898,
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            "sort_day": null,
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            "date_precision": "year",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "8ec9ba16f38dee6fc92793c22d8d9e0a31cad0059e42e2e892e201e75e1349f8"
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      "legacy_id": "artifact-31759c365148",
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      "summary": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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      "sources": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "display_subtitle": "The map was published in 1925 and depicts an 1820 exploration.",
      "url": "vault.html#artifact-32cd3838b0aa",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 2 650 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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      "topics": [
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      ],
      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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        "role": "not_embedded",
        "asset": null,
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1925",
        "object_date_text": "March 1925",
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          "title": "Chart showing the discoveries and approximate track of Edward Bransfield, Master R.N. in the hired brig \"Williams\" of Blyth, when exploring the South Shetland Islands and the northern extremity of Graham Land in the year 1820.",
          "date": "March 1925",
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          "scale": "1 : 2 650 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "25.5 x 38.5 cm",
          "catalog_notes": "Drawn by Lieut. Commander R.T. Gould, R.N. The coastline shown in red, has been copied in facsimile from Bransfield's chart, as published in 1822, by the Admiralty. The lettering in red has been transcribed from the original MS, chart. The remainder of the chart is based upon the most recent surveys.",
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      "title": "V.D. Carse in dory, with Mount William behind",
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      "summary": "Cataloged expedition photograph: Carse sculls a small wooden boat past ice floes. Snow-covered coast and mountains in background.",
      "claim": null,
      "topics": [
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        "limitations": null
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        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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          "artifact_id": "P51/8/B051",
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          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Roberts, Brian Birley",
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      "title": "Macquarie Island",
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      "summary": "Separately numbered original oversized, formerly at maxx 889.8/1913/1. in the Australasian Antarctic Expedition records; inventory item 12, .",
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          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
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      "title": "Mitten — Terra Nova expedition",
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      "summary": "Individually cataloged mitten associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0319.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "object_date_text": "1910",
        "sort_start_year": 1910,
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        "sort_day": null,
        "date_status": "dated",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
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      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-03-23",
        "object_date_text": "1903-03-23",
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          "title": "Lethwait Strait coast",
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          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/171",
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          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
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            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
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      "summary": "Cataloged expedition photograph: Four members of the Expedition stand at ship ‘Terra Nova”s rail, looking out at ice floes which extends to horizon.",
      "claim": null,
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-3d1a8927700c",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 18, 101cm x 69cm.",
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        "sort_day": null,
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      "title": "Oates",
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      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
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      "claim": null,
      "topics": [
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      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "editorial_review_date_reported": null,
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          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1403",
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          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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      "title": "Sheet SQ 40-41/10 Oygarden Group, Kemp Land, Australian Antarctic Territory [SQ 39-40/12]",
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      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-3d833faa9d32",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
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        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-99.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 99. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 40-41/10 Oygarden Group, Kemp Land, Australian Antarctic Territory [SQ 39-40/12]",
          "href": "vault.html#artifact-3d833faa9d32"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May-1966",
        "object_date_text": "May-1966",
        "sort_start_year": 1966,
        "sort_month": 5,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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          "title": "Captain Scott",
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          "credit": "Ponting, Herbert George photograph, Scott's Last Expedition, arranged by Leonard Huxley (London: Smith, Elder, 1913), vol. 1; Museum Victoria / Biodiversity Heritage Library scan via Internet Archive.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
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          "kind": "historical",
          "label": "record",
          "summary": "Early charted Antarctic coastline.",
          "display_title": "Map of lands and seas around the South Pole",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "1844",
            "sort_year": 1844,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "display_image": {
            "src": "assets/v14/c7551e73c8e6-sduk-south-pole1831-map-detail.jpg",
            "title": "Circumjacent the South Pole — related 1831 SDUK sheet",
            "caption": "Related edition: Circumjacent the South Pole, SDUK sheet dated June 1831, from the David Rumsey collection. This sheet was laid into the collection’s 1844 atlas; it is not the British Library physical copy catalogued 1844. Its sparse coastal reports and unknown interior record historical knowledge, not concealed modern geography.",
            "credit": "Society for the Diffusion of Useful Knowledge; J. & C. Walker, June 1831. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries,0890.009.",
            "rights": "Rumsey current policy expressly allows print/digital publication by for-profit or nonprofit publishers without charge and with credit; not stand-alone for-sale facsimiles. Underlying 1831 work is historical public-domain map. IA mirror retains general CC BY-NC-SA 3.0 notice and downloadable original SID; using separate current Rumsey publication permission, not relabeling CC BY. Direct individual Luna viewer not readable in this check; official indexed collection metadata and IA mirror verified, no contrary item advisory observed.",
            "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~20848~520041",
            "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
            "width": 1015,
            "height": 1127,
            "fit": "contain",
            "visual_role": "related historical edition, not the catalogued British Library sheet",
            "sha256": "c7551e73c8e6906bdc360a30b4dfce7451fadd1075bd7b68074c7dd2144646f6",
            "source_manifest": "image-provenance-v14.json",
            "display_label": "Related source image · not the catalogued artifact",
            "source_limitations": "Explicit related-edition alternative only. Source map imprint 1831; parent atlas 1844; original BL target record date 1844 retained. Do not silently label this an exact 1844 impression.",
            "transformations": "Blank-margin crop for thumbnail, complete printed map, title and imprint retained; full source sheet supplied as supporting image. No upscale.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": false
          },
          "supporting_images": [
            {
              "src": "assets/v14/c624812bfdc0-sduk-south-pole1831-full-sheet.jpg",
              "title": "Circumjacent the South Pole — related 1831 SDUK sheet",
              "caption": "Full source page / supporting original. Related edition: Circumjacent the South Pole, SDUK sheet dated June 1831, from the David Rumsey collection. This sheet was laid into the collection’s 1844 atlas; it is not the British Library physical copy catalogued 1844. Its sparse coastal reports and unknown interior record historical knowledge, not concealed modern geography.",
              "credit": "Society for the Diffusion of Useful Knowledge; J. & C. Walker, June 1831. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries,0890.009.",
              "rights": "Rumsey current policy expressly allows print/digital publication by for-profit or nonprofit publishers without charge and with credit; not stand-alone for-sale facsimiles. Underlying 1831 work is historical public-domain map. IA mirror retains general CC BY-NC-SA 3.0 notice and downloadable original SID; using separate current Rumsey publication permission, not relabeling CC BY. Direct individual Luna viewer not readable in this check; official indexed collection metadata and IA mirror verified, no contrary item advisory observed.",
              "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~20848~520041",
              "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
              "width": 1329,
              "height": 1536,
              "fit": "contain",
              "visual_role": "related historical edition, not the catalogued British Library sheet",
              "sha256": "c624812bfdc0b2a72876c17f83104777d8f9b529ddabfcac4d099f8e8d6333fc",
              "source_manifest": "image-provenance-v14.json",
              "display_label": "Related source image · not the catalogued artifact",
              "source_limitations": "Explicit related-edition alternative only. Source map imprint 1831; parent atlas 1844; original BL target record date 1844 retained. Do not silently label this an exact 1844 impression.",
              "transformations": "Blank-margin crop for thumbnail, complete printed map, title and imprint retained; full source sheet supplied as supporting image. No upscale.",
              "original_exposure_status": null,
              "counts_as_exact_source_coverage": false
            }
          ],
          "sources": [
            {
              "url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~20848~520041",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.davidrumsey.com/about/copyright-and-permissions",
              "role": "image reuse conditions"
            }
          ]
        }
      },
      "record_sha256": "a5d75df400a03164ec089388f184dace67e0e78f4cd4021bf38c270a3a762436"
    },
    {
      "id": "history:artifact-47a8edb955f0",
      "legacy_id": "artifact-47a8edb955f0",
      "kind": "historical",
      "title": "Robertson using sextant",
      "display_title": "Captain Robertson taking a sextant observation",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-47a8edb955f0",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-03-21",
        "object_date_text": "1904-03-21",
        "sort_start_year": 1904,
        "sort_month": 3,
        "sort_day": 21,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-47a8edb955f0",
        "input_record_sha256": "e1b6fb310cc7b1dda2b654284c3f62d3d63279660841fce1d0e3d5fc226c401a",
        "original_fields": {
          "title": "Robertson using sextant",
          "date": "1904-03-21",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/1731",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-47a8edb955f0",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-47a8edb955f0",
            "title": "Robertson using sextant",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_1731.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
          "display_title": "Captain Robertson taking a sextant observation",
          "display_subtitle": "Archival photograph — Scotia expedition.",
          "chronology": {
            "date_label": "1904-03-21",
            "sort_year": 1904,
            "sort_month": 3,
            "sort_day": 21,
            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "5a80d078f9207da37b9c7a8390e2a8fb0237c36668066e7a6fa2972b722fa2f6"
    },
    {
      "id": "history:artifact-48a008c62df0",
      "legacy_id": "artifact-48a008c62df0",
      "kind": "historical",
      "title": "Chart of the Southern Hemisphere",
      "display_title": "Southern Hemisphere map showing Cook’s voyage tracks",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-48a008c62df0",
      "summary": "Cook voyage tracks surround an uncharted center.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "cook-1777-loc.jpg",
          "caption": "Related LOC copy of Cook’s 1777 chart—not the British Library holding cataloged below. 616×640 film-copy preview; no added detail.",
          "title": "Chart of the Southern Hemisphere",
          "href": "vault.html#artifact-48a008c62df0"
        },
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1777",
        "object_date_text": "1777",
        "sort_start_year": 1777,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "1772–1775",
          "meaning": "Cook voyage tracks",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-48a008c62df0",
        "input_record_sha256": "96e29976de7b7b63274d0687c5936bce9f0044121ee035cce2320506ce5d5a5d",
        "original_fields": {
          "title": "Chart of the Southern Hemisphere",
          "date": "1777",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Cook voyage tracks surround an uncharted center.",
          "identifier": "10025.f.20",
          "id": "artifact-48a008c62df0",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "10025.f.20",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-48a008c62df0",
            "title": "Chart of the Southern Hemisphere",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "direct_image_url": "https://www.bl.uk/images/v5dwkion/production/cf41ab6cb78b4b613e09874e40773c9eab8d629f-356x400.jpg/achart-of-the-southern-hemisphere,-in-a-voyage-towards-the-south-pole...,-1777.-bl-10025.f.20..jpg?auto=format",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Cook voyage tracks surround an uncharted center.",
          "display_title": "Southern Hemisphere map showing Cook’s voyage tracks",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "1777",
            "sort_year": 1777,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "1772–1775",
            "meaning": "Cook voyage tracks",
            "used_for_default_sort": false
          }
        }
      },
      "record_sha256": "c2ceafbfcdc26a449d75e38b53bd7eeec72a89c56a30d2a209e43bfacf5accb3"
    },
    {
      "id": "history:artifact-49e343dd5ab0",
      "legacy_id": "artifact-49e343dd5ab0",
      "kind": "historical",
      "title": "Amundsen South Pole expedition film",
      "display_title": "Amundsen South Pole expedition film",
      "display_subtitle": "Archival document or record.",
      "url": "vault.html#artifact-49e343dd5ab0",
      "summary": "Surviving expedition film is preserved as documentary heritage.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d6703466943bf2bfca9b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910–1912",
        "object_date_text": "1910–1912",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-49e343dd5ab0",
        "input_record_sha256": "5acfb78715f55ae38fea49b58498f879585258e316a00f0a13ca804b8cb89ef6",
        "original_fields": {
          "title": "Amundsen South Pole expedition film",
          "date": "1910–1912",
          "institution": "National Library of Norway",
          "source_url": "https://www.nb.no/dokumentarv-i-nasjonalbiblioteket/roald-amundsens-sydpolfilm-i-1911/",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "film",
            "Amundsen expedition"
          ],
          "description": "Surviving expedition film is preserved as documentary heritage.",
          "id": "artifact-49e343dd5ab0",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Surviving expedition film is preserved as documentary heritage.",
          "display_title": "Amundsen South Pole expedition film",
          "display_subtitle": "Archival document or record.",
          "chronology": {
            "date_label": "1910–1912",
            "sort_year": 1910,
            "sort_month": null,
            "sort_day": null,
            "end_year": 1912,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "4b1f3e9212142a8bde12cb0fb386d13a8639681566202080db2334e89f136ab1"
    },
    {
      "id": "history:artifact-4a29231c0db4",
      "legacy_id": "artifact-4a29231c0db4",
      "kind": "historical",
      "title": "Carta marina",
      "display_title": "Waldseemüller’s nautical world map",
      "display_subtitle": "Historical world map.",
      "url": "vault.html#artifact-4a29231c0db4",
      "summary": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:62619f2f60bbf23739da",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:0beb6d5def9bf5f8fa54",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "technical contact layout of twelve original map sheets",
        "asset": {
          "src": "assets/v13/a4cd464a3e71-carta-marina-1516-twelve-sheet-contact.jpg",
          "title": "Carta marina, 1516 — twelve-sheet contact layout",
          "caption": "The twelve original 1516 Carta marina sheets in a labeled contact layout, with visible gaps—not an invisibly stitched reconstruction. The catalog describes sheet 6 as an inserted proof; most other sheets carry Schöner annotations. Each source sheet is supplied separately for detailed viewing.",
          "credit": "Martin Waldseemüller, 1516; Johann Schöner annotations. Library of Congress, Jay I. Kislak Collection, LCCN 2016586433.",
          "rights": "Exact catalog: Jay I. Kislak Collection materials are in the public domain and free to use/reuse.",
          "source_url": "https://www.loc.gov/item/2016586433/",
          "rights_url": "https://www.loc.gov/item/2016586433/",
          "width": 1600,
          "height": 950,
          "fit": "contain",
          "visual_role": "technical contact layout of twelve original map sheets",
          "sha256": "a4cd464a3e71c44fbc18baeb034d16e1e2341e52c4cb0d9c99c2531c62e19390",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "Exact catalog: Jay I. Kislak Collection materials are in the public domain and free to use/reuse.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1516",
        "object_date_text": "1516",
        "sort_start_year": 1516,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-4a29231c0db4",
        "input_record_sha256": "aabce5a266290a035bf65ba77ceebbe7b0e4d45cca2421d420b1d6271c02b8fc",
        "original_fields": {
          "id": "artifact-4a29231c0db4",
          "title": "Carta marina",
          "creator": "Martin Waldseemüller",
          "date": "1516",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/",
          "supplemental_or_image_url": "https://apps.lib.umn.edu/bell/map/WALD/BIO/carta.html",
          "classification": "World map",
          "relevance_and_caution": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Compare with the 1507 map as changing cartographic knowledge, not literal cosmological geometry.",
          "categories": [
            "World map"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-4a29231c0db4",
            "title": "Carta marina",
            "official_source_url": "https://www.loc.gov/exhibits/exploring-the-early-americas/interactives/waldseemuller-maps/",
            "official_viewer_url": "https://www.loc.gov/resource/g3200m.gct00046/?st=list",
            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "LOC catalog search verifies original1516 map sheet gallery, item2016586433; no direct image extracted."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
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              "credit": "Martin Waldseemüller, 1516; Johann Schöner annotations. Library of Congress, Jay I. Kislak Collection, LCCN 2016586433.",
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          "sources": [
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              "url": "https://www.loc.gov/item/2016586433/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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          ],
          "display_title": "Waldseemüller’s nautical world map",
          "display_subtitle": "Historical world map.",
          "chronology": {
            "date_label": "1516",
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    {
      "id": "history:artifact-4a5054007a29",
      "legacy_id": "artifact-4a5054007a29",
      "kind": "historical",
      "title": "Sheet SQ 38-39/15 Simpson Peak, Enderby Land, Australian Antarctic Territory [SQ 39-40/13]",
      "display_title": "Topographic map of Simpson Peak, Enderby Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-4a5054007a29",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "asset": {
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          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 104. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/15 Simpson Peak, Enderby Land, Australian Antarctic Territory [SQ 39-40/13]",
          "href": "vault.html#artifact-4a5054007a29"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "August 1962",
        "object_date_text": "August 1962",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
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        "input_record_sha256": "6f8ea9910e9e31dc7080044c6356902eab293de762aaf4d00cf0dbdff8b55ec9",
        "original_fields": {
          "id": "artifact-4a5054007a29",
          "artifact_id": "AADC map 104",
          "accession": "AADC map 104",
          "title": "Sheet SQ 38-39/15 Simpson Peak, Enderby Land, Australian Antarctic Territory [SQ 39-40/13]",
          "date": "August 1962",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=104",
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          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
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          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "69.5 x 65 cm",
          "catalog_notes": "Simpson Peak SQ 38-39/15 have been numbered according to a map numbering system adopted by Department of National Mapping in 1962 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/13.",
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          "visual_status": "verified-cleared-thumbnail",
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          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
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            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 104. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=104",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Topographic map of Simpson Peak, Enderby Land",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-4a96d8ade061",
      "legacy_id": "artifact-4a96d8ade061",
      "kind": "historical",
      "title": "Routes of Captain R. Amundsen's South Polar Expedition 1911-12",
      "display_title": "Amundsen’s South Pole expedition routes",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-4a96d8ade061",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 6 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d4eba2305e5b86cdee83",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
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          "role": "image reuse conditions",
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        "role": "historical original/copy",
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          "title": "Routes of Captain R. Amundsen's South Polar Expedition 1911–12",
          "caption": "Amundsen expedition routes, 1911–12; published by the Royal Geographical Society in 1913. Library of Congress copy.",
          "credit": "Royal Geographical Society, The Geographical Journal, 1913. Library of Congress, Geography and Map Division.",
          "rights": "Library of Congress Geography and Map Division digitized collections are free to use and reuse unless otherwise indicated; no contrary advisory on source.",
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          "title": "Cape Crozier Precipices. Jan. 3rd 1911.",
          "date": "3.1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "claim": null,
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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      },
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        "reuse_notice": "No known restrictions on publication.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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            "visual_type": "archive scan",
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      "summary": "Cataloged expedition photograph: Sled dogs lie in snow.",
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      "topics": [
        "Expedition photographs"
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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        "source_rechecked_at": null
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          "creator": "Harrisson, Charles Turnbull. (under the direction of Davis, John King.).",
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          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
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      "kind": "historical",
      "title": "South Polar Chart",
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      "summary": "J. G. Bartholomew polar geography.",
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      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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      "url": "vault.html#artifact-5204b5a3cba8",
      "summary": "Map records Western Base exploration tracks from 1912–1914.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
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        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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      },
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      "topics": [
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      ],
      "assessment": {
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      },
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        "reuse_notice": "Public Domain; Met Open Access permits unrestricted commercial and noncommercial use.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_scopes": [
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      "title": "Sheet SR 38-39/3 Nye Mountains, Enderby Land, Australian Antarctic Territory [SR 39-40/1]",
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      "topics": [
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      "assessment": {
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          "institution": "Australian Antarctic Data Centre",
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            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=97",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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      "display_title": "North Head, Macquarie Island — coastal depth chart",
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      "url": "vault.html#artifact-52da4323e0bf",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 6, 56cm x 77cm.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
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        "text": null,
        "limitations": null
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        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "object_date_text": "1912",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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          "creator": "Davis, John King.",
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          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
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      "topics": [
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        "sort_day": null,
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        "source_rechecked_at": null
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          "title": "Sledge plate — Terra Nova expedition",
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            "sort_day": null,
            "end_year": null,
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            "date_status": "dated",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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      "kind": "historical",
      "title": "Graptolite penguin rookery",
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      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-10-15",
        "object_date_text": "1903-10-15",
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        "sort_day": 15,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/781",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-552ff7fe062d",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-552ff7fe062d",
            "title": "Graptolite penguin rookery",
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            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
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            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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      "display_title": "Maximum/minimum thermometer — Australasian Antarctic Expedition",
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      "url": "vault.html#artifact-55f9db38eafa",
      "summary": "Individually cataloged maximum/minimum thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4234.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "date_status": "dated",
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        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
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          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
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          "browsing_group": "objects",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-561747ac798f",
      "legacy_id": "artifact-561747ac798f",
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      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-561747ac798f",
      "summary": "Revised Bayliss map includes Ellsworth’s flight and later Antarctic research.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 14161. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Antarctica, second edition",
          "href": "vault.html#artifact-561747ac798f"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1956",
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        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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          "title": "Antarctica, second edition",
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          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
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          "description": "Revised Bayliss map includes Ellsworth’s flight and later Antarctic research.",
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          "artifact_id": "AADC map 14161",
          "verification": "Institutional source checked; uncertainties retained in metadata",
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            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
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            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=14161",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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          "label": "record",
          "summary": "Revised Bayliss map includes Ellsworth’s flight and later Antarctic research.",
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            "sort_day": null,
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
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            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-56b6b26c5b26",
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      "kind": "historical",
      "title": "Plumb Line — Australasian Antarctic Expedition",
      "display_title": "Plumb Line — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-56b6b26c5b26",
      "summary": "Individually cataloged plumb line associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4225.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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      "summary": "John George Abizaid’s map with English and Arabic text.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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      },
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      },
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          "rights": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
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            "visual_type": "archive scan",
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      "summary": "Individually cataloged balaclava associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4252.",
      "claim": null,
      "topics": [
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      ],
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        "label": "record",
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        "limitations": null
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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      "summary": "A separately catalogued expedition or regional map; scale 1 : 1 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
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        "role": "not_embedded",
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      "assessment": {
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        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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      "dates": {
        "artifact_date_text": "March 1970",
        "object_date_text": "March 1970",
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          "visual_status": "verified-cleared-thumbnail",
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            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-6126350d9055",
      "summary": "Individually cataloged dry card compass associated by Royal Museums Greenwich with the Terra Nova expedition; accession ACO0127.",
      "claim": null,
      "topics": [
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        "object_date_text": "circa 1901",
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          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
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          "official_viewer_url": null,
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      "claim": null,
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        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
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      "sources": [
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        {
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          "supports_claim_truth": null
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          "title": "Petty Officer Evans and Crean",
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          "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
          "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
          "source_url": "https://archive.org/details/greatwhitesouthb00pont",
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          "height": 527,
          "fit": "contain",
          "visual_role": "historical related expedition photographs, NOT exact exposures",
          "sha256": "c00eca6b1ad7988dc856b073f0e642aabbbf83baea07dde41d04a610aa6bbe1a",
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          "transformations": null,
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          "counts_as_exact_source_coverage": false
        },
        "reuse_notice": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "4.1911",
        "object_date_text": "4.1911",
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        "sort_day": null,
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      "claim": null,
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      "dates": {
        "artifact_date_text": "1938",
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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          "accession": "AADC map 3710",
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          "visual_role": "historical related expedition photographs, NOT exact exposures",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-69",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Four ponies look out from stables, their heads over the stable doors. Three dogs lie asleep on the floor. Machinery and ropes off to one side.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Four ponies look out from stables, their heads over the stable doors. Three dogs lie asleep on the floor. Machinery and ropes off to one side.",
          "display_title": "Ponies in their stalls aboard Terra Nova",
          "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
          "chronology": {
            "date_label": "12.1910",
            "sort_year": 1910,
            "sort_month": 12,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "display_image": {
            "src": "assets/v14/468537f5d4dd-artifact-637e97d7469f-related-1913.jpg",
            "title": "Some of the ponies on the Terra Nova.",
            "caption": "Related expedition photograph—not the catalogued exposure. Captain Oates and ponies on the Terra Nova. Same expedition ponies aboard the same vessel; shows Oates with two ponies, not the catalogued four-pony exposure.",
            "credit": "Ponting, Herbert George photograph, Scott's Last Expedition, arranged by Leonard Huxley (London: Smith, Elder, 1913), vol. 1; Museum Victoria / Biodiversity Heritage Library scan via Internet Archive.",
            "rights": "Public domain. BHL metadata explicitly considers this work no longer under copyright protection. Independent 1913 book reproduction; no SPRI scan reuse permission implied.",
            "source_url": "https://archive.org/details/ScottquotslasteIScot",
            "rights_url": "https://archive.org/metadata/ScottquotslasteIScot",
            "width": 841,
            "height": 1200,
            "fit": "contain",
            "visual_role": "historical related expedition photographs, NOT exact exposures",
            "sha256": "468537f5d4dd92f6d376d0c94bdd16ba7c184f9b524353a139a6c4f7687b6116",
            "source_manifest": "image-provenance-v14.json",
            "display_label": "Related expedition photograph—not the catalogued exposure",
            "source_limitations": "Authentic independent public-domain book scan. Original print/scan softness and paper tint retained; no generated detail. Keep the distinction from the catalogued exposure visible on the card and supporting image.",
            "transformations": null,
            "original_exposure_status": "held-no-cleared-exact-image",
            "counts_as_exact_source_coverage": false
          },
          "supporting_images": [
            {
              "src": "assets/v14/e2f2d98ada68-artifact-637e97d7469f-related-1913-fullplate.jpg",
              "title": "Some of the ponies on the Terra Nova.",
              "caption": "Full source page / supporting original. Related expedition photograph—not the catalogued exposure. Captain Oates and ponies on the Terra Nova. Same expedition ponies aboard the same vessel; shows Oates with two ponies, not the catalogued four-pony exposure.",
              "credit": "Ponting, Herbert George photograph, Scott's Last Expedition, arranged by Leonard Huxley (London: Smith, Elder, 1913), vol. 1; Museum Victoria / Biodiversity Heritage Library scan via Internet Archive.",
              "rights": "Public domain. BHL metadata explicitly considers this work no longer under copyright protection. Independent 1913 book reproduction; no SPRI scan reuse permission implied.",
              "source_url": "https://archive.org/details/ScottquotslasteIScot",
              "rights_url": "https://archive.org/metadata/ScottquotslasteIScot",
              "width": 1234,
              "height": 1800,
              "fit": "contain",
              "visual_role": "historical related expedition photographs, NOT exact exposures",
              "sha256": "e2f2d98ada68dd6260e53b10f75ae963e1f21b7e349cb3564f7e98ca94c22f8b",
              "source_manifest": "image-provenance-v14.json",
              "display_label": "Related expedition photograph—not the catalogued exposure",
              "source_limitations": "Authentic independent public-domain book scan. Original print/scan softness and paper tint retained; no generated detail. Keep the distinction from the catalogued exposure visible on the card and supporting image.",
              "transformations": null,
              "original_exposure_status": "held-no-cleared-exact-image",
              "counts_as_exact_source_coverage": false
            }
          ],
          "sources": [
            {
              "url": "https://archive.org/details/ScottquotslasteIScot",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://archive.org/metadata/ScottquotslasteIScot",
              "role": "image reuse conditions"
            }
          ]
        }
      },
      "record_sha256": "5423d51e6b7662dfc94c48ccc6ffc784c0cf0a99c70cc0cd790b3ae5ca3dd9d0"
    },
    {
      "id": "history:artifact-63912f010da9",
      "legacy_id": "artifact-63912f010da9",
      "kind": "historical",
      "title": "Hekla at Sandefjord",
      "display_title": "Hekla at Sandefjord before becoming Scotia",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-63912f010da9",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902-01",
        "object_date_text": "1902-01",
        "sort_start_year": 1902,
        "sort_month": 1,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-63912f010da9",
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        "original_fields": {
          "title": "Hekla at Sandefjord",
          "date": "1902-01",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/2",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-63912f010da9",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-63912f010da9",
            "title": "Hekla at Sandefjord",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0002.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
          "display_title": "Hekla at Sandefjord before becoming Scotia",
          "display_subtitle": "Archival photograph — Scotia expedition.",
          "chronology": {
            "date_label": "1902-01",
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            "sort_month": 1,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "a2e54f49f5b5f4d41c403b273c4eaf8292bd076d6a797ba4209dd5f15cba26c0"
    },
    {
      "id": "history:artifact-63fc1d0f23ea",
      "legacy_id": "artifact-63fc1d0f23ea",
      "kind": "historical",
      "title": "Aurora preliminary deep-sea sounding chart",
      "display_title": "Aurora’s deep-sea depth measurements",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-63fc1d0f23ea",
      "summary": "Bathymetric observations from Mawson expedition voyages of 1912–1913.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8f8d0aff09aeef449365",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "object_date_text": "1913",
        "sort_start_year": 1913,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "1912–1913",
          "meaning": "voyages supplying depth measurements",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-63fc1d0f23ea",
        "input_record_sha256": "1aa0af611e32400601830cecbc8eedf5827a9aae097c9ce8870df0cf59bedac3",
        "original_fields": {
          "id": "artifact-63fc1d0f23ea",
          "title": "Aurora preliminary deep-sea sounding chart",
          "date": "1913",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Bathymetric observations from Mawson expedition voyages of 1912–1913.",
          "identifier": "AADC map 3695",
          "creator": "Royal Geographical Society",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 3695",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-63fc1d0f23ea",
            "title": "Aurora preliminary deep-sea sounding chart",
            "official_source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
            "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3695",
            "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Deep_sea_soundings_thumb.jpg",
            "visual_status": "primary-image-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Bathymetric observations from Mawson expedition voyages of 1912–1913.",
          "display_title": "Aurora’s deep-sea depth measurements",
          "display_subtitle": "Historical regional or expedition map.",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
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            "used_for_default_sort": false
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      "record_sha256": "6952e085a0324eced4a17f1b9a370c6babe77101db4726c236eb524b3cc14529"
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    {
      "id": "history:artifact-6439650084ac",
      "legacy_id": "artifact-6439650084ac",
      "kind": "historical",
      "title": "Boots, Finnesko — Australasian Antarctic Expedition",
      "display_title": "Finnesko boots from the Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-6439650084ac",
      "summary": "Individually cataloged boots, finnesko associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4236.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6439650084ac",
        "input_record_sha256": "e8555fc32285ea25197a7f5ab20fb1c7111ed6aba074e5d032745225cdd195dd",
        "original_fields": {
          "id": "artifact-6439650084ac",
          "title": "Boots, Finnesko — Australasian Antarctic Expedition",
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          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3991",
          "accession": "AAA4236",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
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            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged boots, finnesko associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4236.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/565/rv1522.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3991",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Boots, Finnesko",
          "notes": "",
          "artifact_id": "AAA4236",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/565/rv1522.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
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          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged boots, finnesko associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4236.",
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          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "c15ebba882bab386d5d43023c590dc587966e657702a13d19bc4af20ba621cb1"
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    {
      "id": "history:artifact-65537f26f7d0",
      "legacy_id": "artifact-65537f26f7d0",
      "kind": "historical",
      "title": "World map on double cordiform projection",
      "display_title": "World map with two heart-shaped hemispheres",
      "display_subtitle": "A map projection: the heart shapes do not describe the physical shape of Earth.",
      "url": "vault.html#artifact-65537f26f7d0",
      "summary": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-65537f26f7d0.jpg",
          "caption": "Gerhard Mercator (1538). From The New York Public Library, Rare Book Division. Actual institutional image reproduction; not proof of later interpretations. Source & reuse ↗",
          "title": "World map on double cordiform projection",
          "href": "vault.html#artifact-65537f26f7d0"
        },
        "reuse_notice": "NYPL states public domain in the United States; other jurisdictions not determined.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1538",
        "object_date_text": "1538",
        "sort_start_year": 1538,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-65537f26f7d0",
        "input_record_sha256": "5c132f8064a49ac6dd9c53d90f7acbc34f6b213fa113f6a0b2dafe9f36dc92d9",
        "original_fields": {
          "id": "artifact-65537f26f7d0",
          "title": "World map on double cordiform projection",
          "creator": "Gerhard Mercator",
          "date": "1538",
          "institution": "New York Public Library",
          "source_url": "https://old-digitalcollections.nypl.org/items/c5326a5c-cd31-6b8c-e040-e00a18063384",
          "supplemental_or_image_url": null,
          "classification": "Geographic projection",
          "relevance_and_caution": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth.",
          "rights": "NYPL states public domain in United States; other jurisdictions not determined.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Two heart-shaped hemispheres project a globe, not a heart-shaped physical Earth.",
          "categories": [
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          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-65537f26f7d0",
            "title": "World map on double cordiform projection",
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      "summary": "A separately catalogued expedition or regional map; scale 1 : 45 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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      "assessment": {
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      },
      "dates": {
        "artifact_date_text": "May 1934",
        "object_date_text": "May 1934",
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      "provenance": {
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        "input_key": "vault.html#artifact-68ae3cc84805",
        "input_record_sha256": "45d4b157add7c1acc216ebf47b1fcc9cf20b277381c1230a8c99c145c8451b4d",
        "original_fields": {
          "id": "artifact-68ae3cc84805",
          "artifact_id": "AADC map 3707",
          "accession": "AADC map 3707",
          "title": "Stations of the Circumpolar Cruises Winter 1932, and of the Falkland Islands Sector Season 1932-33",
          "date": "May 1934",
          "institution": "Australian Antarctic Data Centre",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 45 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Stations_Falkland_Is_Sector_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3707",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 45 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "24.7 x 48 cm",
          "catalog_notes": "Two maps on the one sheet",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Stations_Falkland_Is_Sector_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 45 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Research stations visited on Southern Ocean cruises",
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            "date_label": "May 1934",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
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            "label": "Winter 1932 and season 1932–1933",
            "meaning": "cruise stations",
            "used_for_default_sort": false
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        }
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      "record_sha256": "2e0dd03e0da650679e51c69e475f1ad35b41bc61a8e6657c4fcf78181cf6d65d"
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    {
      "id": "history:artifact-6b2d2542b3e2",
      "legacy_id": "artifact-6b2d2542b3e2",
      "kind": "historical",
      "title": "Bell Tent Design — Australasian Antarctic Expedition",
      "display_title": "Bell-tent design for the Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-6b2d2542b3e2",
      "summary": "Individually cataloged tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4214.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1911",
        "object_date_text": "circa 1911",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "input_record_sha256": "c6e7d14c418d24afcbe3cd70563fbc1244768d5ee5308660f0184c434f571c99",
        "original_fields": {
          "id": "artifact-6b2d2542b3e2",
          "title": "Bell Tent Design — Australasian Antarctic Expedition",
          "date": "circa 1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3969",
          "accession": "AAA4214",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4214.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Bell Tent Design",
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          "artifact_id": "AAA4214",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4214.",
          "display_title": "Bell-tent design for the Australasian Antarctic Expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "circa 1911",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "b165e0e8e788f6205d8e60a7d11fef1ceadb024d2187a06fb18e1d60827b9eb4"
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    {
      "id": "history:artifact-6bbfdbb52ec3",
      "legacy_id": "artifact-6bbfdbb52ec3",
      "kind": "historical",
      "title": "Gauntlets — Australasian Antarctic Expedition",
      "display_title": "Gauntlet gloves from the Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-6bbfdbb52ec3",
      "summary": "Individually cataloged gauntlets associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4246.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6bbfdbb52ec3694d607b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6bbfdbb52ec3",
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        "original_fields": {
          "id": "artifact-6bbfdbb52ec3",
          "title": "Gauntlets — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4001",
          "accession": "AAA4246",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged gauntlets associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4246.",
          "visual_url": "https://collections.rmg.co.uk/media/3/59/593/rv1550.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4001",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Gauntlets",
          "notes": "",
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          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/59/593/rv1550.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged gauntlets associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4246.",
          "display_title": "Gauntlet gloves from the Australasian Antarctic Expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
          "chronology": {
            "date_label": "1911-14",
            "sort_year": 1911,
            "sort_month": null,
            "sort_day": null,
            "end_year": 1914,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "24936995650c8055d41e5ad6d4c4dc02d14f0a9c0384427641baf64cffc3b3ab"
    },
    {
      "id": "history:artifact-6e39bbd2af6d",
      "legacy_id": "artifact-6e39bbd2af6d",
      "kind": "historical",
      "title": "V.D. Carse (portrait)",
      "display_title": "Portrait of Carse — Graham Land expedition",
      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
      "url": "vault.html#artifact-6e39bbd2af6d",
      "summary": "Cataloged expedition photograph: Portrait of Carse",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e606754ad09f12432ac9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "object_date_text": "1935",
        "sort_start_year": 1935,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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        "original_fields": {
          "id": "artifact-6e39bbd2af6d",
          "artifact_id": "P51/8/B078",
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          "creator": "Roberts, Brian Birley",
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          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b078",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-b078",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "categories": [
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            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Portrait of Carse",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Portrait of Carse",
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "5464691a898f9ab3abc103292f7e3ecc7fe7825522adbe34809c48ebca615f81"
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    {
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      "summary": "A separately catalogued expedition or regional map; scale 1 : 2 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1905",
        "object_date_text": "1905",
        "sort_start_year": 1905,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "1903–1905",
          "meaning": "French expedition",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-6ebe1174bad6",
        "input_record_sha256": "df367b8d4625a8d1f299248fc8d27dbeda5cec8abd4f5eae5ea1ed9935ff8638",
        "original_fields": {
          "id": "artifact-6ebe1174bad6",
          "artifact_id": "AADC map 3687",
          "accession": "AADC map 3687",
          "title": "Sketch Map to illustrate the paper by Dr. Charcot on the French Antarctic Expedition 1903-5.",
          "date": "1905",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3687",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 2 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1903-5_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3687",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 2 500 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "35.5 x 40.7 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1903-5_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 2 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "French Antarctic Expedition exploration map, 1903–1905",
          "display_subtitle": "Historical regional or expedition map.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
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            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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            "meaning": "French expedition",
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    {
      "id": "history:artifact-6f6844c7a984",
      "legacy_id": "artifact-6f6844c7a984",
      "kind": "historical",
      "title": "Grytviken harbour and whaling station",
      "display_title": "Grytviken harbour and whaling station",
      "display_subtitle": "Archival photograph — Shackleton-Rowett Antarctic Expedition 1921-22.",
      "url": "vault.html#artifact-6f6844c7a984",
      "summary": "Cataloged expedition photograph: View along the deck of the ship ‘Quest’, on which stand three men. Two dead whales lie in the water alongside a steam whaler and a motor launch motors across the fjord behind. Coast in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "source_id": "source:87305b1c474fef3e1997",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "object_date_text": "1922",
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            "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
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          ],
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            {
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              "role": "image reuse conditions"
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          ]
        }
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      "title": "Over trousers — Australasian Antarctic Expedition",
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      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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          "visual_status": "primary-image-link-delivery-unverified",
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
        {
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          "role": "image reproduction provenance; not proof of a linked interpretation",
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        {
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          "title": "Nansenbushū bankoku shōka no zu",
          "caption": "Sacred geography; India-centered, not polar evidence.",
          "credit": "Library of Congress, Geography and Map Division",
          "rights": "LOC Geography and Map Division: free to use and reuse; no contrary Rights Advisory found.",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj113",
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          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC Geography and Map Division: free to use and reuse; no contrary Rights Advisory found.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1710",
        "object_date_text": "1710",
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        "sort_day": null,
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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        "editorial_review_date_reported": null,
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          "relevance_and_caution": "Sacred geography; India-centered, not polar evidence.",
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          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
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            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
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          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
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          "sources": [
            {
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            },
            {
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      "title": "Bruce aboard Scotia",
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      "claim": null,
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        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902-07-15",
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        "editorial_review_date_reported": null,
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          "rights": "Not verified; source link only until reuse terms are checked.",
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            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
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      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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      "visual": {
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
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          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/662",
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          "verification": "Institutional catalog or institutional illustrated collection checked",
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            "embed_allowed": false,
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            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
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      "url": "vault.html#artifact-7dff45f0ae4d",
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      "claim": null,
      "topics": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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          "official_viewer_url": null,
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          "visual_status": "catalog-record-only",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
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          "browse_topic": "Objects & expedition gear",
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          "label": "record",
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        "limitations": null
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          "title": "Charles Wright working at night with his transit. August 8th 1911",
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          "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "kind": "historical",
      "title": "Graham Land : British Graham Land Expedition, January 1935 - March 1937",
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      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-7e32f50104ed",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 3 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
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      },
      "dates": {
        "artifact_date_text": "May 1938",
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          "title": "Graham Land : British Graham Land Expedition, January 1935 - March 1937",
          "date": "May 1938",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "38.5 x 35.3 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Graham_Land_BGLE_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
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          "kind": "historical",
          "label": "record",
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            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "January 1935–March 1937",
            "meaning": "Graham Land expedition",
            "used_for_default_sort": false
          }
        }
      },
      "record_sha256": "5662fb582b8836b0106bc7bfd5217c495c86c699a651141c3ab6a54595649a22"
    },
    {
      "id": "history:artifact-7f3989535671",
      "legacy_id": "artifact-7f3989535671",
      "kind": "historical",
      "title": "Mossman observing weather",
      "display_title": "Mossman recording weather at Omond House",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-7f3989535671",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc59d521ace1217982f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-02-21",
        "object_date_text": "1904-02-21",
        "sort_start_year": 1904,
        "sort_month": 2,
        "sort_day": 21,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7f3989535671",
        "input_record_sha256": "522298404c5c60e61dd40361ec602d57ea26367c4f3f391bdae195b0dc5728b8",
        "original_fields": {
          "title": "Mossman observing weather",
          "date": "1904-02-21",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "photography",
            "Scotia expedition"
          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/221",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-7f3989535671",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7f3989535671",
            "title": "Mossman observing weather",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0221.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
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            "date_label": "1904-02-21",
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            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "97e9d70692a6b7335dca5e8cd025e5364119146a8e0541c429d8055fc0b7c3ff"
    },
    {
      "id": "history:artifact-7f48483057af",
      "legacy_id": "artifact-7f48483057af",
      "kind": "historical",
      "title": "Index of the International Map of the World on the Millionth Scale, Antarctic Series",
      "display_title": "Index to the Antarctic million-scale map series",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-7f48483057af",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:01a4974a1cae9a98ccd9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-15264.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 15264. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Index of the International Map of the World on the Millionth Scale, Antarctic Series",
          "href": "vault.html#artifact-7f48483057af"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1968",
        "object_date_text": "1968",
        "sort_start_year": 1968,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-7f48483057af",
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        "original_fields": {
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          "accession": "AADC map 15264",
          "title": "Index of the International Map of the World on the Millionth Scale, Antarctic Series",
          "date": "1968",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=15264",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-15264.jpg",
            "width": 300,
            "height": 212,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 15264. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=15264",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
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          },
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        }
      },
      "record_sha256": "4d9636b08ba8b544445751fe36f04591f9197aa289595a9b767529981ae93a23"
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    {
      "id": "history:artifact-7fee930722c3",
      "legacy_id": "artifact-7fee930722c3",
      "kind": "historical",
      "title": "Manuscript world map, Tavola 1–60",
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      "url": "vault.html#artifact-7fee930722c3",
      "summary": "Urbano Monte’s sixty-sheet map represents a globe in polar projection.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/world-artifact-7fee930722c3.jpg",
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          "href": "vault.html#artifact-7fee930722c3"
        },
        "reuse_notice": "Current Rumsey policy permits attributed digital publication; not permission for standalone for-sale facsimiles. Policy also links CC BY-NC-SA3.0; do not label unrestrictedPD.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1587",
        "object_date_text": "1587",
        "sort_start_year": 1587,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "source_url": "https://www.davidrumsey.com/luna/servlet/view/all/when/1587/",
          "rights": "Unknown; collection image license not verified",
          "categories": [
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            "imagined-geography",
            "polar-projection"
          ],
          "description": "Urbano Monte’s sixty-sheet map represents a globe in polar projection.",
          "identifier": "10130.000",
          "notes": "Counted once: modern stitched composites, rotations and reprojections are not additional historical artifacts.",
          "id": "artifact-7fee930722c3",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "10130.000",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-7fee930722c3",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; collection image license not verified",
            "visual_type": "modern digital assembly of original 1587 map sheets",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact reproduction extracted from Rumsey institutional essay. This is a modern digital assembly of sixty original sheets, not a historical single-sheet map. North-polar azimuthal projection does not imply a flat-earth cosmology. Reuse not cleared; external link only."
          },
          "browsing_scopes": [
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            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "display_image": {
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            "rights": "Current Rumsey policy permits attributed digital publication; not permission for standalone for-sale facsimiles. Policy also links CC BY-NC-SA3.0; do not label unrestrictedPD.",
            "note": "Modern digital assembly of60 original1587 sheets—not an original one-sheet map. "
          },
          "browsing_group": "world-maps",
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          "label": "record",
          "summary": "Urbano Monte’s sixty-sheet map represents a globe in polar projection.",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      "record_sha256": "881338563123d5620174d0d4652517ae91f7d82399e8839e64d178e7aef33d0b"
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    {
      "id": "history:artifact-8027630d4d2c",
      "legacy_id": "artifact-8027630d4d2c",
      "kind": "historical",
      "title": "Waistcoat — Terra Nova expedition",
      "display_title": "Waistcoat — Terra Nova expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-8027630d4d2c",
      "summary": "Individually cataloged waistcoat associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0317.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "object_date_text": "1910",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8027630d4d2c",
        "input_record_sha256": "bbc4be155338e36d44700157de58915c93657657f0fbe438d64c2c25be6bd782",
        "original_fields": {
          "id": "artifact-8027630d4d2c",
          "title": "Waistcoat — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71132",
          "accession": "TXT0317",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
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            "Terra Nova expedition"
          ],
          "description": "Individually cataloged waistcoat associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0317.",
          "visual_url": "https://collections.rmg.co.uk/media/3/258/770/rv7918.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-71132",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
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          "notes": "",
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          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/258/770/rv7918.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged waistcoat associated by Royal Museums Greenwich with the Terra Nova expedition; accession TXT0317.",
          "display_title": "Waistcoat — Terra Nova expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "1910",
            "sort_year": 1910,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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    {
      "id": "history:artifact-81c90c6b468d",
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      "kind": "historical",
      "title": "J.I. Moore with team, 1 December 1937",
      "display_title": "Moore driving a sled-dog team",
      "display_subtitle": "Source conflict: the title says 1 December 1937; the catalog Date field says 1936.",
      "url": "vault.html#artifact-81c90c6b468d",
      "summary": "Cataloged expedition photograph: Moore drives a sledge and sled dog team towards the camera (blurred image).",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "object_date_text": "1936",
        "sort_start_year": null,
        "sort_month": null,
        "sort_day": null,
        "date_status": "unresolved",
        "date_note": "Keep with unresolved dates; no confirmed chronological placement.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-81c90c6b468d",
        "input_record_sha256": "59cf7e6848d9171019ad49705b8667163971caecf792fbf4d7d0b8a272c91a98",
        "original_fields": {
          "id": "artifact-81c90c6b468d",
          "artifact_id": "P51/8/F392",
          "title": "J.I. Moore with team, 1 December 1937",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f392",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f392",
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          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
          "description": "Cataloged expedition photograph: Moore drives a sledge and sled dog team towards the camera (blurred image).",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed. Source title says1December1937 while Date field says1936; unresolved source discrepancy.",
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          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "label": "record",
          "summary": "Cataloged expedition photograph: Moore drives a sledge and sled dog team towards the camera (blurred image).",
          "display_title": "Moore driving a sled-dog team",
          "display_subtitle": "Source conflict: the title says 1 December 1937; the catalog Date field says 1936.",
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            "date_label": "1936",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "conflict",
            "date_status": "unresolved",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Keep with unresolved dates; no confirmed chronological placement."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [
            "Conflicting source fields: title 1 December 1937; Date 1936. Do not choose either as established."
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      "kind": "historical",
      "title": "British Antarctic Expedition 1910-13 : Sketch map to illustrate the paper by Raymond E. Priestley on The Work of the Northern Party",
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      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-825842b1beb7",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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          "role": "institutional or documentary record",
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        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1914",
        "object_date_text": "1914",
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        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
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          "projection": "Not Given",
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          "catalog_notes": "2 insets of Terra Nova Bay (1:500,000) and Robertson Bay (1:500,000)",
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      "kind": "historical",
      "title": "Spirit level — Australasian Antarctic Expedition",
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      "url": "vault.html#artifact-83465317ef45",
      "summary": "Individually cataloged spirit level associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4227.",
      "claim": null,
      "topics": [
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      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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      "dates": {
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        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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          "description": "Individually cataloged spirit level associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4227.",
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          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3982",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "title": "Woollen vest — Australasian Antarctic Expedition",
      "display_title": "Woollen vest — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-84c8b079f322",
      "summary": "Individually cataloged vest associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4253.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
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        "sort_day": null,
        "date_status": "dated",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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        "input": "reader-data.json",
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          "visual_status": "catalog-record-only",
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      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
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      "topics": [
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "object_date_text": "1910",
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          "visual_status": "institutional-image-record-delivery-unverified",
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      "summary": "Cataloged expedition photograph: View along a quay to the stern of the sail and steam powered ship ‘Quest’. McIlroy and Mrs Jeffrey, both smartly dressed, stand on the quay in front of the boat. Warehouse stand behind, settlement under a mountain in the background.",
      "claim": null,
      "topics": [
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        "limitations": null
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "review_date_basis": "not recorded",
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        "original_fields": {
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          "title": "‘Quest’ at quayside, Simonstown, South Africa. McIlroy and Mrs Jeffrey on quay",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Not identified in consulted record",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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      "kind": "historical",
      "title": "Antarctica 1956–1959 Expeditions",
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      "claim": null,
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        "object_date_text": "1959",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "summary": "Individually cataloged theodolite associated by Royal Museums Greenwich with the Terra Nova expedition; accession NAV1464.",
      "claim": null,
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      "summary": "Individually cataloged bell tent associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4215.",
      "claim": null,
      "topics": [
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      "assessment": {
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        "original_fields": {
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          "date": "1911-14",
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          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3970",
          "accession": "AAA4215",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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          "title": "Sheet SQ 41-42/16 Bjerko Peninsula, Mac.Robertson Land, Australian Antarctic Territory",
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        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
        "artifact_date_text": "March-1970",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
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          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
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          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
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            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=79",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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      "kind": "historical",
      "title": "Antarctic Regions : chart to illustrate the paper on the Drift of the \"Endurance\" by Lieut. J.M. Wordie R.F.A.",
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      "url": "vault.html#artifact-8da28a3ac71c",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 7 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "source_id": "source:f9f8d4b1fcaac3cac228",
          "role": "image reproduction provenance; not proof of a linked interpretation",
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          "source_url": "https://archive.org/details/South00Shac",
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        "reuse_notice": "Public Domain Mark 1.0; Commons explicitly PD-old-70-expired and US pre 1931 publication.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "April 1918",
        "object_date_text": "April 1918",
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8da28a3ac71c",
        "input_record_sha256": "a56843b6eb00bb794ac169a129bb4e417f464e8cf8c654f4e298a6b2b4d95b96",
        "original_fields": {
          "id": "artifact-8da28a3ac71c",
          "artifact_id": "AADC map 3700",
          "accession": "AADC map 3700",
          "title": "Antarctic Regions : chart to illustrate the paper on the Drift of the \"Endurance\" by Lieut. J.M. Wordie R.F.A.",
          "date": "April 1918",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3700",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 7 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Drift_Endurance_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3700",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 7 500 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "34 x 36.3 cm",
          "catalog_notes": "A physical copy of this map is on permanent loan from the Australian Antarctic Division to the National Library of Australia, where it is available for viewing.",
          "holding_note": "A physical copy of this map is on permanent loan from the Australian Antarctic Division to the National Library of Australia, where it is available for viewing.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Drift_Endurance_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 7 500 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Map of Endurance’s drift through Antarctic waters",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "April 1918",
            "sort_year": 1918,
            "sort_month": 4,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "display_image": {
            "src": "assets/v14/a12bc5257183-artifact-8da28a3ac71c-context1919.jpg",
            "title": "The voyage of the Endurance: related 1919 map",
            "caption": "Related historical map: Endurance’s voyage, ice drift and relief attempts, published in Shackleton’s South (1919). Not Wordie’s RGS 1918 sheet.",
            "credit": "Stanford’s Geographical Establishment, The Voyage of the Endurance, in Ernest Shackleton, South (London: William Heinemann,1919), foldout after p.368. Internet Archive scan via Wikimedia Commons.",
            "rights": "Public Domain Mark 1.0; Commons explicitly PD-old-70-expired and US pre 1931 publication.",
            "source_url": "https://archive.org/details/South00Shac",
            "rights_url": "https://commons.wikimedia.org/wiki/File:South_-_the_story_of_Shackleton%27s_last_expedition,_1914-1917_-Map.jpg",
            "width": 985,
            "height": 1000,
            "fit": "contain",
            "visual_role": "historical related-map context, NOT exact",
            "sha256": "a12bc52571836534827ffbcdd0c11015b45e36a345f93bffe3c2b38540e4a919",
            "source_manifest": "image-provenance-v14.json",
            "display_label": "Related source image · not the catalogued artifact",
            "source_limitations": "Different historical map of same voyage, not the target 1918 RGS Wordie chart. Use only as clearly labeled supporting/context image; retain original record link and hold for exact scan.",
            "transformations": "Proportional thumbnail resize only.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
          },
          "supporting_images": [
            {
              "src": "assets/v14/8b6606148070-endurance1919.jpg",
              "title": "The voyage of the Endurance: related 1919 map",
              "caption": "Full source page / supporting original. Related historical map: Endurance’s voyage, ice drift and relief attempts, published in Shackleton’s South (1919). Not Wordie’s RGS 1918 sheet.",
              "credit": "Stanford’s Geographical Establishment, The Voyage of the Endurance, in Ernest Shackleton, South (London: William Heinemann,1919), foldout after p.368. Internet Archive scan via Wikimedia Commons.",
              "rights": "Public Domain Mark 1.0; Commons explicitly PD-old-70-expired and US pre 1931 publication.",
              "source_url": "https://archive.org/details/South00Shac",
              "rights_url": "https://commons.wikimedia.org/wiki/File:South_-_the_story_of_Shackleton%27s_last_expedition,_1914-1917_-Map.jpg",
              "width": 2735,
              "height": 2776,
              "fit": "contain",
              "visual_role": "historical related-map context, NOT exact",
              "sha256": "8b66061480700470eb1f9a0d57a7f8888e98a31888caff3c5aaaa54d3356058a",
              "source_manifest": "image-provenance-v14.json",
              "display_label": "Related source image · not the catalogued artifact",
              "source_limitations": "Different historical map of same voyage, not the target 1918 RGS Wordie chart. Use only as clearly labeled supporting/context image; retain original record link and hold for exact scan.",
              "transformations": "Proportional thumbnail resize only.",
              "original_exposure_status": null,
              "counts_as_exact_source_coverage": null
            }
          ],
          "sources": [
            {
              "url": "https://archive.org/details/South00Shac",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://commons.wikimedia.org/wiki/File:South_-_the_story_of_Shackleton%27s_last_expedition,_1914-1917_-Map.jpg",
              "role": "image reuse conditions"
            }
          ]
        }
      },
      "record_sha256": "ff735e8df3b9a6258aa6d078fe91f3de0da6aec8f272e4a5263ade8d23f9edb8"
    },
    {
      "id": "history:artifact-8dfd386a6a88",
      "legacy_id": "artifact-8dfd386a6a88",
      "kind": "historical",
      "title": "Longjohns — Australasian Antarctic Expedition",
      "display_title": "Longjohns — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-8dfd386a6a88",
      "summary": "Individually cataloged longjohns associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4260.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8dfd386a6a88f3d086f0",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8dfd386a6a88",
        "input_record_sha256": "708e95e82d35559fce23239dc02bbfebb00839ae2e9dcfaab53afed6e6ccac39",
        "original_fields": {
          "id": "artifact-8dfd386a6a88",
          "title": "Longjohns — Australasian Antarctic Expedition",
          "date": "1911",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-4015",
          "accession": "AAA4260",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged longjohns associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4260.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Longjohns",
          "notes": "",
          "artifact_id": "AAA4260",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged longjohns associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4260.",
          "display_title": "Longjohns — Australasian Antarctic Expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
          "chronology": {
            "date_label": "1911",
            "sort_year": 1911,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "c399411b12e55a9aa7700538b007452af82ce360a7d298a45ec216baac6b2aa1"
    },
    {
      "id": "history:artifact-8fd51bf45b39",
      "legacy_id": "artifact-8fd51bf45b39",
      "kind": "historical",
      "title": "A.A.E. Sledge Journeys",
      "display_title": "Sledge-journey map — Australasian Antarctic Expedition",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-8fd51bf45b39",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 16, 54cm x 75cm. East party shown green. Coast party shown red. Commonwealth Bay. Adelaide Land. Nunatak. Mount Murchison.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912",
        "object_date_text": "c1912",
        "sort_start_year": 1912,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8fd51bf45b39",
        "input_record_sha256": "3c3955e9df265280c45f8f806473ecc2b825bd57c08bb8e020fc1f04ceda6343",
        "original_fields": {
          "id": "artifact-8fd51bf45b39",
          "artifact_id": "SLNSW AAE map 16",
          "accession": "Australasian Antarctic Expedition records, map 16",
          "title": "A.A.E. Sledge Journeys",
          "date": "c1912",
          "creator": "Stillwell, Frank Leslie.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 16, 54cm x 75cm. East party shown green. Coast party shown red. Commonwealth Bay. Adelaide Land. Nunatak. Mount Murchison.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 16, 54cm x 75cm. East party shown green. Coast party shown red. Commonwealth Bay. Adelaide Land. Nunatak. Mount Murchison.",
          "display_title": "Sledge-journey map — Australasian Antarctic Expedition",
          "display_subtitle": "Historical regional or expedition map.",
          "chronology": {
            "date_label": "c1912",
            "sort_year": 1912,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "52e7622294deadfa3db031224e7e09b67ce20c3bdccd165c04623dd112cc3963"
    },
    {
      "id": "history:artifact-8fff7a2f28c8",
      "legacy_id": "artifact-8fff7a2f28c8",
      "kind": "historical",
      "title": "Etymologiae T-O map",
      "display_title": "Medieval T-and-O map of three continents",
      "display_subtitle": "The T separates Asia, Europe and Africa; the O represents surrounding water.",
      "url": "vault.html#artifact-8fff7a2f28c8",
      "summary": "Three-part symbolic map, not a polar projection.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ce1a99dc7f01cf897e0a",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:4a8263446a447ff899a9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "historical reproduction",
        "asset": {
          "src": "assets/v13/bb5ab960cdc3-artifact-8fff7a2f28c8-thumb.jpg",
          "title": "Etymologiae, T-O world diagram, folio 183v",
          "caption": "T-O world diagram, Etymologiae, 1472, folio 183v; Karlsruhe copy.",
          "credit": "Isidore of Seville, Etymologiae, Augsburg 1472. Badische Landesbibliothek Karlsruhe, Dg 179, urn:nbn:de:bsz:31-128502 / Public Domain Mark 1.0.",
          "rights": "Public Domain Mark 1.0",
          "source_url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
          "rights_url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
          "width": 768,
          "height": 1000,
          "fit": "contain",
          "visual_role": "historical reproduction",
          "sha256": "bb5ab960cdc320577b947bb62bb1e00721c4bd802f5dc77799758e00e3ae9240",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "Public Domain Mark 1.0",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1472",
        "object_date_text": "1472",
        "sort_start_year": 1472,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-8fff7a2f28c8",
        "input_record_sha256": "ccdd7b9a017145ebbfd2aa3fc96982c31eed48aeb998d72b19316f20bed4dc3f",
        "original_fields": {
          "id": "artifact-8fff7a2f28c8",
          "title": "Etymologiae T-O map",
          "creator": "Isidore of Seville; printer Guntherus Ziner",
          "date": "1472",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s105p1.jpg",
          "classification": "Christian schematic geography",
          "relevance_and_caution": "Three-part symbolic map, not a polar projection.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Three-part symbolic map, not a polar projection.",
          "categories": [
            "Christian schematic geography"
          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-8fff7a2f28c8",
            "title": "Etymologiae T-O map",
            "official_source_url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj105",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s105p1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Three-part symbolic map, not a polar projection.",
          "display_image": {
            "src": "assets/v13/bb5ab960cdc3-artifact-8fff7a2f28c8-thumb.jpg",
            "title": "Etymologiae, T-O world diagram, folio 183v",
            "caption": "T-O world diagram, Etymologiae, 1472, folio 183v; Karlsruhe copy.",
            "credit": "Isidore of Seville, Etymologiae, Augsburg 1472. Badische Landesbibliothek Karlsruhe, Dg 179, urn:nbn:de:bsz:31-128502 / Public Domain Mark 1.0.",
            "rights": "Public Domain Mark 1.0",
            "source_url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
            "rights_url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
            "width": 768,
            "height": 1000,
            "fit": "contain",
            "visual_role": "historical reproduction",
            "sha256": "bb5ab960cdc320577b947bb62bb1e00721c4bd802f5dc77799758e00e3ae9240",
            "source_manifest": "image-provenance-v13.json"
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          "supporting_images": [
            {
              "src": "assets/v13/f9a493a5521a-isidore183v.jpg",
              "title": "Etymologiae, T-O world diagram, folio 183v",
              "caption": "Full source page / supporting original. T-O world diagram, Etymologiae, 1472, folio 183v; Karlsruhe copy.",
              "credit": "Isidore of Seville, Etymologiae, Augsburg 1472. Badische Landesbibliothek Karlsruhe, Dg 179, urn:nbn:de:bsz:31-128502 / Public Domain Mark 1.0.",
              "rights": "Public Domain Mark 1.0",
              "source_url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
              "rights_url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
              "width": 1000,
              "height": 1302,
              "fit": "contain",
              "visual_role": "historical reproduction",
              "sha256": "f9a493a5521a231ab88841e9dbe05ffc84ebfd3daa26534c6549cad3be7ea0da",
              "source_manifest": "image-provenance-v13.json"
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          ],
          "sources": [
            {
              "url": "https://digital.blb-karlsruhe.de/urn/urn:nbn:de:bsz:31-128502",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            }
          ],
          "display_title": "Medieval T-and-O map of three continents",
          "display_subtitle": "The T separates Asia, Europe and Africa; the O represents surrounding water.",
          "chronology": {
            "date_label": "1472",
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      "topics": [
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
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          "source_id": "source:8cf025bbdf87be41c411",
          "role": "image reproduction provenance; not proof of a linked interpretation",
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        {
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          "role": "image reuse conditions",
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          "title": "Nova et acurata totius Asiae tabula, [1657?]",
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        "reuse_notice": "Exact LOC resource states Geography and Map Division free use/reuse unless contrary Rights Advisory; none present.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
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          "label": "record",
          "summary": "Asian geography labels a broad Tartaria region.",
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            "caption": "Full wall map cataloged as Nova et acurata totius Asiae tabula, [1657?]. The printed title strip reads Nova et exacta Asiae geographica descriptio. Blaeu cartography, Visscher publication; the broad Tartaria label is not proof of a single hidden empire.",
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              "caption": "Full source page / supporting original. Full wall map cataloged as Nova et acurata totius Asiae tabula, [1657?]. The printed title strip reads Nova et exacta Asiae geographica descriptio. Blaeu cartography, Visscher publication; the broad Tartaria label is not proof of a single hidden empire.",
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          "sources": [
            {
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            {
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              "role": "image reuse conditions"
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          ],
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            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-938afd202a41",
      "legacy_id": "artifact-938afd202a41",
      "kind": "historical",
      "title": "Cuthbertson beside Scotia",
      "display_title": "Artist Cuthbertson beside the icebound Scotia",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-938afd202a41",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "artifact_date_text": "1903-09-02",
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        "sort_day": 2,
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "input_record_sha256": "547f63aa44b55e66788649c6424eda34252c07998b5b08f993e23a473539bc00",
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          "title": "Cuthbertson beside Scotia",
          "date": "1903-09-02",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/211",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-938afd202a41",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-938afd202a41",
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            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-972b9ea2fbe3",
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      "title": "Dog rope — Australasian Antarctic Expedition",
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      "summary": "Individually cataloged dog rope associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4220.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
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          "title": "Dog rope — Australasian Antarctic Expedition",
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          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3975",
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          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
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            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "0aa7d10be095c58e82ed7559ee8f93cefcb0ec85e87c00a621721333b03853ab"
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    {
      "id": "history:artifact-9907b0e33de2",
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      "kind": "historical",
      "title": "Plan of Hasselborough Bay. Macquarie Island",
      "display_title": "Map of Hasselborough Bay, Macquarie Island",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-9907b0e33de2",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 7, 56cm x 77cm.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
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        "role": "not_embedded",
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        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "object_date_text": "1912",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "id": "artifact-9907b0e33de2",
          "artifact_id": "SLNSW AAE map 7",
          "accession": "Australasian Antarctic Expedition records, map 7",
          "title": "Plan of Hasselborough Bay. Macquarie Island",
          "date": "1912",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
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          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 7, 56cm x 77cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
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          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 7, 56cm x 77cm.",
          "display_title": "Map of Hasselborough Bay, Macquarie Island",
          "display_subtitle": "Historical regional or expedition map.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "7ba0733b5d33385589a4647ad19d650f2d2ec10ab68aae3a52dfc490bf8d8406"
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    {
      "id": "history:artifact-9987bf8b13bf",
      "legacy_id": "artifact-9987bf8b13bf",
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      "claim": null,
      "topics": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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          "date": "9.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
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      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
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      "summary": "Cataloged expedition photograph: Moore stands next to jagged ice blocks. Ice field and mountainous coast behind.",
      "claim": null,
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "artifact_id": "P51/8/F417",
          "title": "J.I. Moore standing beside pressure ice, south east corner of bay forming south branch of Bourgeois Fjord (bay north of Calmette Bay)",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-03-28",
        "object_date_text": "1904-03-28",
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          "institution": "University of Glasgow",
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/555",
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            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0555.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
          "display_title": "Scotia measuring ocean depth in the Weddell Sea",
          "display_subtitle": "Archival photograph — Scotia expedition.",
          "chronology": {
            "date_label": "1904-03-28",
            "sort_year": 1904,
            "sort_month": 3,
            "sort_day": 28,
            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "100f2226f83d9b8233849a1c78523ee418c702f95bb85027da3e8d891760ace6"
    },
    {
      "id": "history:artifact-a054bab9ddcb",
      "legacy_id": "artifact-a054bab9ddcb",
      "kind": "historical",
      "title": "Sledge cover — Australasian Antarctic Expedition",
      "display_title": "Sledge cover — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-a054bab9ddcb",
      "summary": "Individually cataloged sledge cover associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4218.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a054bab9ddcbc14e53fa",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a054bab9ddcb",
        "input_record_sha256": "a3bab8d01100d1d32e8ccc7206b1c8de597a1a4f8ca1610a89e8df102c1dde7a",
        "original_fields": {
          "id": "artifact-a054bab9ddcb",
          "title": "Sledge cover — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3973",
          "accession": "AAA4218",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged sledge cover associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4218.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledge cover",
          "notes": "",
          "artifact_id": "AAA4218",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledge cover associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4218.",
          "display_title": "Sledge cover — Australasian Antarctic Expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "1911-14",
            "sort_year": 1911,
            "sort_month": null,
            "sort_day": null,
            "end_year": 1914,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "497643ef0835ae6c6d64bcfcb66cf843fdce981903c610cef583ce8386556e9c"
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    {
      "id": "history:artifact-a118cd449cdf",
      "legacy_id": "artifact-a118cd449cdf",
      "kind": "historical",
      "title": "Antarctic Regions: Captain J. K. Davis annotated chart",
      "display_title": "Antarctic chart annotated by Captain J. K. Davis",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-a118cd449cdf",
      "summary": "Annotated nautical chart preserved in the Davis collection, NAA P2819.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1933",
        "object_date_text": "1933",
        "sort_start_year": 1933,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a118cd449cdf",
        "input_record_sha256": "ee1683789d5f117d039567c932898f744bb293977f8fe46db67ecfd41794c225",
        "original_fields": {
          "id": "artifact-a118cd449cdf",
          "title": "Antarctic Regions: Captain J. K. Davis annotated chart",
          "date": "1933",
          "institution": "National Archives of Australia; cataloged by Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=1335",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
          "categories": [
            "map",
            "Antarctica",
            "historical"
          ],
          "description": "Annotated nautical chart preserved in the Davis collection, NAA P2819.",
          "identifier": "AADC map 1335",
          "creator": "UK Hydrographic Department",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog",
          "verification_date": "2026-10-28",
          "artifact_id": "AADC map 1335",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Annotated nautical chart preserved in the Davis collection, NAA P2819.",
          "display_title": "Antarctic chart annotated by Captain J. K. Davis",
          "display_subtitle": "Historical regional or expedition map.",
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            "date_label": "1933",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-a1f473b90132",
      "legacy_id": "artifact-a1f473b90132",
      "kind": "historical",
      "title": "Universalis cosmographia",
      "display_title": "Waldseemüller’s world map naming America",
      "display_subtitle": "The 1507 map introduced the name America for the newly described lands.",
      "url": "vault.html#artifact-a1f473b90132",
      "summary": "Early-modern knowledge boundary; depiction predates Antarctic coastal exploration.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
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          "caption": "Low-resolution institutional preview; original viewer may offer more detail. Library of Congress, Geography and Map Division Reuse terms ↗",
          "title": "Universalis cosmographia",
          "href": "vault.html#artifact-a1f473b90132"
        },
        "reuse_notice": "Free to use and reuse under item Rights & Access; no contrary Rights Advisory displayed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1507",
        "object_date_text": "1507",
        "sort_start_year": 1507,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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          "relevance_and_caution": "Early-modern knowledge boundary; depiction predates Antarctic coastal exploration.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
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          "visual_source": {
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
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          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
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            "width": 269,
            "height": 150,
            "credit": "Library of Congress, Geography and Map Division",
            "source_url": "https://www.loc.gov/item/2003626426/",
            "rights": "Free to use and reuse under item Rights & Access; no contrary Rights Advisory displayed.",
            "note": "Low-resolution institutional preview; original viewer may offer more detail. "
          },
          "browsing_group": "world-maps",
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          "label": "record",
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
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        {
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          "role": "image reuse conditions",
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        "asset": {
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          "title": "Antarctica Exploration Sketch Map: first year, 1903",
          "caption": "1903 sketch map of the Discovery expedition’s first year: tracks, winter quarters and observation-balloon location. Original sheet and institutional markings retained.",
          "credit": "Royal Geographical Society, 1903. Library of Congress, Geography and Map Division.",
          "rights": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
          "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
          "rights_url": "https://www.loc.gov/collections/general-maps/about-this-collection/rights-and-access/",
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          "visual_role": "institutional reproduction of original map",
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        "reuse_notice": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903",
        "object_date_text": "1903",
        "sort_start_year": 1903,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Discovery routes, winter quarters and observation-balloon site.",
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            "title": "Antarctica Exploration Sketch Map: first year, 1903",
            "caption": "1903 sketch map of the Discovery expedition’s first year: tracks, winter quarters and observation-balloon location. Original sheet and institutional markings retained.",
            "credit": "Royal Geographical Society, 1903. Library of Congress, Geography and Map Division.",
            "rights": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
            "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
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          "supporting_images": [
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              "title": "Antarctica Exploration Sketch Map: first year, 1903",
              "caption": "Full source page / supporting original. 1903 sketch map of the Discovery expedition’s first year: tracks, winter quarters and observation-balloon location. Original sheet and institutional markings retained.",
              "credit": "Royal Geographical Society, 1903. Library of Congress, Geography and Map Division.",
              "rights": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
              "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
              "rights_url": "https://www.loc.gov/collections/general-maps/about-this-collection/rights-and-access/",
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              "sha256": "5cd4a8429ffec1cd0f690695fae8c30ec58c0110914b9344876a2404271030e9",
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          "sources": [
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              "url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/collections/general-maps/about-this-collection/rights-and-access/",
              "role": "image reuse conditions"
            }
          ],
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            "sort_day": null,
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
      },
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      "title": "Sheets SQ 40-41/9 & Part 5 Aker Peaks & Cape Borley, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/11 & Part 7]",
      "display_title": "Topographic map of Aker Peaks & Cape Borley, Enderby Land - Kemp Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-a48c309066eb",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
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          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 78. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/9 & Part 5 Aker Peaks & Cape Borley, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/11 & Part 7]",
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        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September-1967",
        "object_date_text": "September-1967",
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        "sort_day": null,
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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      },
      "provenance": {
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          "artifact_id": "AADC map 78",
          "accession": "AADC map 78",
          "title": "Sheets SQ 40-41/9 & Part 5 Aker Peaks & Cape Borley, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/11 & Part 7]",
          "date": "September-1967",
          "institution": "Australian Antarctic Data Centre",
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          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
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            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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    {
      "id": "history:artifact-a4ca28ea0ebb",
      "legacy_id": "artifact-a4ca28ea0ebb",
      "kind": "historical",
      "title": "Lucas sounding apparatus",
      "display_title": "Lucas machine measuring deep-sea depth",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-a4ca28ea0ebb",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904-03-28",
        "object_date_text": "1904-03-28",
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        "sort_month": 3,
        "sort_day": 28,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a4ca28ea0ebb",
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          "title": "Lucas sounding apparatus",
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          "institution": "University of Glasgow",
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          "rights": "Not verified; source link only until reuse terms are checked.",
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/553",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-a4ca28ea0ebb",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a4ca28ea0ebb",
            "title": "Lucas sounding apparatus",
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            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
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      "kind": "historical",
      "title": "Sheet SQ 38-39/16 McLeod Nunataks, Enderby Land, Australian Antarctic Territory [SQ 39-40/14]",
      "display_title": "Topographic map of McLeod Nunataks, Enderby Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-a523a586659e",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "embedded": true,
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          "title": "Sheet SQ 38-39/16 McLeod Nunataks, Enderby Land, Australian Antarctic Territory [SQ 39-40/14]",
          "href": "vault.html#artifact-a523a586659e"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1964",
        "object_date_text": "March 1964",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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          "artifact_id": "AADC map 90",
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          "title": "Sheet SQ 38-39/16 McLeod Nunataks, Enderby Land, Australian Antarctic Territory [SQ 39-40/14]",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "reuse_notice": "Institution item explicitly marks Public Domain Mark1.0",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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            "visual_type": "institutional digital object viewer",
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            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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      "kind": "historical",
      "title": "Maps to illustrate the paper by Dr. J.B. Charcot on the French Antarctic Expedition 1908-1910.",
      "display_title": "Maps of Charcot’s French Antarctic expedition, 1908–1910",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-a6d715a37c80",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:6cf48055c1cb9acc84df",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:3d8a2cfb315ff9ff9b16",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "historical related-map context, NOT exact",
        "asset": {
          "src": "assets/v14/70899b296f92-artifact-a6d715a37c80-context1911.jpg",
          "title": "Itinéraire du Pourquoi-Pas — related 1911 map",
          "caption": "Related contemporary map: route of Charcot’s Pourquoi-Pas expedition 1908–10, Larousse 1911. Not the Royal Geographical Society sheet.",
          "credit": "Unknown engraver, Itinéraire du Pourquoi-Pas, Larousse illustré mensuel 1911, p.153; University of Toronto scan via Internet Archive/Wikimedia Commons.",
          "rights": "Commons explicit PD-anon-expired: anonymous work published 1911, PD in US and countries with anonymous-work terms 95 years or less.",
          "source_url": "https://archive.org/stream/laroussemensueli02auguoft#page/153/mode/1up",
          "rights_url": "https://commons.wikimedia.org/wiki/File:Itin%C3%A9raire_du_Pourquoi-Pas.png",
          "width": 1000,
          "height": 791,
          "fit": "contain",
          "visual_role": "historical related-map context, NOT exact",
          "sha256": "70899b296f921396f57b48a0dafbea0ebca24ae270b5878e81816f7cd6a0860e",
          "source_manifest": "image-provenance-v14.json",
          "display_label": "Related source image · not the catalogued artifact",
          "source_limitations": "Different contemporary map of same expedition, NOT the target RGS 1911 four-map sheet. Use as explicitly labeled supporting/context illustration only; preserve original source link.",
          "transformations": "Proportional resize and PNG-to-JPEG only; no generated imagery.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "Commons explicit PD-anon-expired: anonymous work published 1911, PD in US and countries with anonymous-work terms 95 years or less.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": {
          "label": "1908–1910",
          "meaning": "Charcot expedition",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a6d715a37c80",
        "input_record_sha256": "7ecccdcb11d1af4b9976e81c95461b29348eddb84bed3ade3835d40305e30ad5",
        "original_fields": {
          "id": "artifact-a6d715a37c80",
          "artifact_id": "AADC map 3691",
          "accession": "AADC map 3691",
          "title": "Maps to illustrate the paper by Dr. J.B. Charcot on the French Antarctic Expedition 1908-1910.",
          "date": "1911",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3691",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1908-1910_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3691",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 5 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "40.5 x 35 cm",
          "catalog_notes": "5 maps showing the tracks of the \"Belgica\" 1898, \"Francais\" 1903-05, \"Pourquoi Pas?\" 1908-1909, and 1909-1910.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/French_Ant_Exp_1908-1910_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 5 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Maps of Charcot’s French Antarctic expedition, 1908–1910",
          "display_subtitle": "Historical regional or expedition map.",
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            "date_label": "1911",
            "sort_year": 1911,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "1908–1910",
            "meaning": "Charcot expedition",
            "used_for_default_sort": false
          },
          "display_image": {
            "src": "assets/v14/70899b296f92-artifact-a6d715a37c80-context1911.jpg",
            "title": "Itinéraire du Pourquoi-Pas — related 1911 map",
            "caption": "Related contemporary map: route of Charcot’s Pourquoi-Pas expedition 1908–10, Larousse 1911. Not the Royal Geographical Society sheet.",
            "credit": "Unknown engraver, Itinéraire du Pourquoi-Pas, Larousse illustré mensuel 1911, p.153; University of Toronto scan via Internet Archive/Wikimedia Commons.",
            "rights": "Commons explicit PD-anon-expired: anonymous work published 1911, PD in US and countries with anonymous-work terms 95 years or less.",
            "source_url": "https://archive.org/stream/laroussemensueli02auguoft#page/153/mode/1up",
            "rights_url": "https://commons.wikimedia.org/wiki/File:Itin%C3%A9raire_du_Pourquoi-Pas.png",
            "width": 1000,
            "height": 791,
            "fit": "contain",
            "visual_role": "historical related-map context, NOT exact",
            "sha256": "70899b296f921396f57b48a0dafbea0ebca24ae270b5878e81816f7cd6a0860e",
            "source_manifest": "image-provenance-v14.json",
            "display_label": "Related source image · not the catalogued artifact",
            "source_limitations": "Different contemporary map of same expedition, NOT the target RGS 1911 four-map sheet. Use as explicitly labeled supporting/context illustration only; preserve original source link.",
            "transformations": "Proportional resize and PNG-to-JPEG only; no generated imagery.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
          },
          "supporting_images": [
            {
              "src": "assets/v14/028d0994c6e9-charcot1911.png",
              "title": "Itinéraire du Pourquoi-Pas — related 1911 map",
              "caption": "Full source page / supporting original. Related contemporary map: route of Charcot’s Pourquoi-Pas expedition 1908–10, Larousse 1911. Not the Royal Geographical Society sheet.",
              "credit": "Unknown engraver, Itinéraire du Pourquoi-Pas, Larousse illustré mensuel 1911, p.153; University of Toronto scan via Internet Archive/Wikimedia Commons.",
              "rights": "Commons explicit PD-anon-expired: anonymous work published 1911, PD in US and countries with anonymous-work terms 95 years or less.",
              "source_url": "https://archive.org/stream/laroussemensueli02auguoft#page/153/mode/1up",
              "rights_url": "https://commons.wikimedia.org/wiki/File:Itin%C3%A9raire_du_Pourquoi-Pas.png",
              "width": 1570,
              "height": 1242,
              "fit": "contain",
              "visual_role": "historical related-map context, NOT exact",
              "sha256": "028d0994c6e97069075f0f89ab547e0c9228228adbd98e412b6e183cfea0fe91",
              "source_manifest": "image-provenance-v14.json",
              "display_label": "Related source image · not the catalogued artifact",
              "source_limitations": "Different contemporary map of same expedition, NOT the target RGS 1911 four-map sheet. Use as explicitly labeled supporting/context illustration only; preserve original source link.",
              "transformations": "Proportional resize and PNG-to-JPEG only; no generated imagery.",
              "original_exposure_status": null,
              "counts_as_exact_source_coverage": null
            }
          ],
          "sources": [
            {
              "url": "https://archive.org/stream/laroussemensueli02auguoft#page/153/mode/1up",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://commons.wikimedia.org/wiki/File:Itin%C3%A9raire_du_Pourquoi-Pas.png",
              "role": "image reuse conditions"
            }
          ]
        }
      },
      "record_sha256": "012e6807a9ee04d80b1056537b7aab6743aae59531d980d4f84afec21aca568f"
    },
    {
      "id": "history:artifact-a75dd084257d",
      "legacy_id": "artifact-a75dd084257d",
      "kind": "historical",
      "title": "Scott final letter to Bridgeman",
      "display_title": "Scott final letter to Bridgeman",
      "display_subtitle": "Archival document or record.",
      "url": "vault.html#artifact-a75dd084257d",
      "summary": "Final-camp letter acquired by the institute in 2013.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f86cb52336d43c860a16",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912-03",
        "object_date_text": "1912-03",
        "sort_start_year": 1912,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a75dd084257d",
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          "title": "Scott final letter to Bridgeman",
          "date": "1912-03",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "source_url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Terra Nova expedition"
          ],
          "description": "Final-camp letter acquired by the institute in 2013.",
          "id": "artifact-a75dd084257d",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-a75dd084257d",
            "title": "Scott final letter to Bridgeman",
            "official_source_url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
            "official_viewer_url": "https://www.cam.ac.uk/research/news/last-letter-of-captain-scott-finally-revealed-in-full-101-years-on",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL."
          },
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Final-camp letter acquired by the institute in 2013.",
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          "display_subtitle": "Archival document or record.",
          "chronology": {
            "date_label": "1912-03",
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            "sort_month": 3,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
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      "record_sha256": "2f4c0d4c6e921410cdbaa32a5fe36af2208fe52bc83e5e50237c2ea8902f9369"
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    {
      "id": "history:artifact-a7f15d283b2f",
      "legacy_id": "artifact-a7f15d283b2f",
      "kind": "historical",
      "title": "Sheets SQ 38-39/12 & Part 8 Mount Codrington & Proclamation Island, Enderby Land, Australian Antarctic Territory [SQ 39-40/10 & Part 6]",
      "display_title": "Topographic map of Mount Codrington & Proclamation Island, Enderby Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-a7f15d283b2f",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fb1dee1beaf822cc6d80",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-92.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 92. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 38-39/12 & Part 8 Mount Codrington & Proclamation Island, Enderby Land, Australian Antarctic Territory [SQ 39-40/10 & Part 6]",
          "href": "vault.html#artifact-a7f15d283b2f"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1964",
        "object_date_text": "March 1964",
        "sort_start_year": 1964,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a7f15d283b2f",
        "input_record_sha256": "e253c1e550ae62e8d942cbd555455bfe4132171d1b3755d0d16ec63a8c55af00",
        "original_fields": {
          "id": "artifact-a7f15d283b2f",
          "artifact_id": "AADC map 92",
          "accession": "AADC map 92",
          "title": "Sheets SQ 38-39/12 & Part 8 Mount Codrington & Proclamation Island, Enderby Land, Australian Antarctic Territory [SQ 39-40/10 & Part 6]",
          "date": "March 1964",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_12_%26_Part_8_1964_250k_92_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "71 x 67 cm",
          "catalog_notes": "Mount Codrington & Proclamation Island SQ 38-39/12 & Part 8 have been numbered according to a map numbering system adopted by Department of National Mapping in 1964 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/10 & Part 6.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ38-39_12_%26_Part_8_1964_250k_92_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-92.jpg",
            "width": 833,
            "height": 960,
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            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=92",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Topographic map of Mount Codrington & Proclamation Island, Enderby Land",
          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
          "chronology": {
            "date_label": "March 1964",
            "sort_year": 1964,
            "sort_month": 3,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "4baa528a7894d1eced5e1745a0a46a108fc8f8df9fc27a11f3ecbc08ea5e8634"
    },
    {
      "id": "history:artifact-a94a0f8756b9",
      "legacy_id": "artifact-a94a0f8756b9",
      "kind": "historical",
      "title": "Weathered ice after blizzard at Cape Evans, looking to Castle Rock. March 8th 1911",
      "display_title": "Ice after a blizzard at Cape Evans",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
      "url": "vault.html#artifact-a94a0f8756b9",
      "summary": "Cataloged expedition photograph: View towards sea over ice in foreground. Ice floes and icebergs in distance.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:1a4702485de5059682d2",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "3.1911",
        "object_date_text": "3.1911",
        "sort_start_year": 1911,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-a94a0f8756b9",
        "input_record_sha256": "3eb6dc62ed5f237e7cfba2ffbb3a7bb52cbf66809d54b84301e97b1fbcc85e49",
        "original_fields": {
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          "artifact_id": "P2005/5/319",
          "title": "Weathered ice after blizzard at Cape Evans, looking to Castle Rock. March 8th 1911",
          "date": "3.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
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          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-319",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
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            "Terra Nova expedition"
          ],
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
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          "display_title": "Ice after a blizzard at Cape Evans",
          "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
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            "end_year": null,
            "date_precision": "month",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
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      "legacy_id": "artifact-aacebc43b826",
      "kind": "historical",
      "title": "Map showing Winter Quarters, Penguin Point and Dreadnought Bluff",
      "display_title": "Map of Winter Quarters, Penguin Point and Dreadnought Bluff",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-aacebc43b826",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 20, 30cm x 49 cm.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "c1912, c1913",
        "object_date_text": "c1912, c1913",
        "sort_start_year": 1912,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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      "provenance": {
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          "date": "c1912, c1913",
          "creator": "Madigan, Cecil T.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
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            "expedition-survey"
          ],
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          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
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          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 20, 30cm x 49 cm.",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "summary": "An authentic surviving fragment of Piri Reis’s world map. Provenance of the artifact does not establish the later interpretation that it depicts an ice-free Antarctic coast.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:fdd25521704347e89f57",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5be3f45044c71052b2c7",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
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      "visual": {
        "embedded": true,
        "role": "authentic photograph of a replica, not the original parchment",
        "asset": {
          "src": "assets/v13/5b11f82d65a4-piri-reis-1513-replica-yair-haklai-2023.jpg",
          "title": "Piri Reis map: museum-display replica photographed in 2023",
          "caption": "Museum-display replica of the 1513 Piri Reis map, photographed by Yair Haklai in 2023. The display label explicitly identifies a replica while the original is under conservation. This is not a photograph of the original parchment and does not establish Antarctic interpretations.",
          "credit": "Yair Haklai, 16 April 2023, Wikimedia Commons, CC BY-SA 4.0. Proportionally resized; otherwise unchanged.",
          "rights": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
          "source_url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
          "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
          "width": 1200,
          "height": 550,
          "fit": "contain",
          "visual_role": "authentic photograph of a replica, not the original parchment",
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          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1513",
        "object_date_text": "1513",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
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        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-ac67026bdec2",
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          "title": "Piri Reis world map fragment",
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          "institution": "Topkapı Palace Museum Library",
          "source_url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
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          ],
          "description": "An authentic surviving fragment of Piri Reis’s world map. Provenance of the artifact does not establish the later interpretation that it depicts an ice-free Antarctic coast.",
          "rights": "Museum-controlled image rights; external source only, pending permission.",
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          "official_viewer_url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
          "direct_image_url": null,
          "edition_note": "Surviving fragment; not a complete map.",
          "provenance": "Lead in user-supplied Claude HIST array; metadata independently checked against primary repositories during prior primary-source audit in this research thread; do not import supplied claims or rights wholesale.",
          "browsing_group": "world-maps",
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          "browsing_scopes": [
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            "world-map-traditions"
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          "kind": "historical",
          "label": "record",
          "summary": "An authentic surviving fragment of Piri Reis’s world map. Provenance of the artifact does not establish the later interpretation that it depicts an ice-free Antarctic coast.",
          "display_image": {
            "src": "assets/v13/5b11f82d65a4-piri-reis-1513-replica-yair-haklai-2023.jpg",
            "title": "Piri Reis map: museum-display replica photographed in 2023",
            "caption": "Museum-display replica of the 1513 Piri Reis map, photographed by Yair Haklai in 2023. The display label explicitly identifies a replica while the original is under conservation. This is not a photograph of the original parchment and does not establish Antarctic interpretations.",
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            "rights": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
            "source_url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
            "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
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            "height": 550,
            "fit": "contain",
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              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://creativecommons.org/licenses/by-sa/4.0/",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Piri Reis world map fragment",
          "display_subtitle": "A surviving fragment, not a complete map or verified Antarctic survey.",
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            "date_label": "1513",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-acd3c1f28d9d",
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      "title": "Members of the expedition on ‘Quest’",
      "display_title": "Expedition members posing aboard Quest",
      "display_subtitle": "Archival photograph — Shackleton-Rowett Antarctic Expedition 1921-22.",
      "url": "vault.html#artifact-acd3c1f28d9d",
      "summary": "Cataloged expedition photograph: Expedition members pose at the stern of the ship ‘Quest’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1922",
        "object_date_text": "1922",
        "sort_start_year": 1922,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
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          "artifact_id": "P56/77/27",
          "title": "Members of the expedition on ‘Quest’",
          "date": "1922",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Bee-Mason, John Charles",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-shackleton-rowett-antarctic-expedition-1921-22/p56-77-27",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Shackleton-Rowett Antarctic Expedition 1921-22",
            "Shackleton–Rowett expedition"
          ],
          "description": "Cataloged expedition photograph: Expedition members pose at the stern of the ship ‘Quest’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Expedition members pose at the stern of the ship ‘Quest’.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
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      "title": "The universe after Cosmas, A.D. 550",
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      "url": "vault.html#artifact-ad7b38f5e8ac",
      "summary": "Kohl’s nineteenth-century tracing of a Cosmas reconstruction.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-ad7b38f5e8ac.gif",
          "caption": "Low-resolution institutional preview; open original viewer for detail.",
          "title": "The universe after Cosmas, A.D. 550",
          "href": "vault.html#artifact-ad7b38f5e8ac"
        },
        "reuse_notice": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1860",
        "object_date_text": "circa 1860",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
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        "related_date": {
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          "meaning": "date attributed to the represented cosmological model, not to this tracing",
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        },
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "title": "The universe after Cosmas, A.D. 550",
          "date": "circa 1860",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2011594788/",
          "rights": "Free to use and reuse per LOC Geography and Map Division statement; check item for exceptions",
          "categories": [
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            "reconstruction"
          ],
          "description": "Kohl’s nineteenth-century tracing of a Cosmas reconstruction.",
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          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "2011594788",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
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            "title": "The universe after Cosmas, A.D. 550",
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            "official_viewer_url": "https://www.loc.gov/resource/g3180.ct001483/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/gmd/gmd3/g3180/g3180/ct001483.gif",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Kohl’s nineteenth-century tracing of a Cosmas reconstruction.",
          "display_title": "Cosmas’s ancient world model — nineteenth-century tracing",
          "display_subtitle": "The model refers to A.D. 550; this tracing is cataloged circa 1860.",
          "chronology": {
            "date_label": "circa 1860",
            "sort_year": 1860,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "nineteenth-century tracing; represented model is from A.D. 550",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "A.D. 550",
            "meaning": "date attributed to the represented cosmological model, not to this tracing",
            "used_for_default_sort": false
          }
        }
      },
      "record_sha256": "a484f763747fd8a146a387a1a9712a7b61d17a263a75cd3a16306f87898771e2"
    },
    {
      "id": "history:artifact-ad997281dff5",
      "legacy_id": "artifact-ad997281dff5",
      "kind": "historical",
      "title": "Sheet SQ 49-50/9 Vincennes Bay, Wilkes Land, Australian Antarctic Territory",
      "display_title": "Topographic map of Vincennes Bay, Wilkes Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-ad997281dff5",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bc5c6d14414b419499dd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-108.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 108. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 49-50/9 Vincennes Bay, Wilkes Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-ad997281dff5"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1969",
        "object_date_text": "March 1969",
        "sort_start_year": 1969,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ad997281dff5",
        "input_record_sha256": "0ed479c922f9abd85830bf3a81c45ff95984c284e6b431198af003e688b99c57",
        "original_fields": {
          "id": "artifact-ad997281dff5",
          "artifact_id": "AADC map 108",
          "accession": "AADC map 108",
          "title": "Sheet SQ 49-50/9 Vincennes Bay, Wilkes Land, Australian Antarctic Territory",
          "date": "March 1969",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ49-50_9_1969_250k_108_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "67 x 67 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ49-50_9_1969_250k_108_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-108.jpg",
            "width": 885,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 108. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=108",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
          "chronology": {
            "date_label": "March 1969",
            "sort_year": 1969,
            "sort_month": 3,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "afa76ccdbf2425660f0fb4031a8c927fb0f54c8ab0e5f19683aedf0bc48e741d"
    },
    {
      "id": "history:artifact-afa6c1e106dc",
      "legacy_id": "artifact-afa6c1e106dc",
      "kind": "historical",
      "title": "The green canvas bag used to carry the diaries of Captain R. F. Scott, RN.",
      "display_title": "Canvas bag used to carry Scott’s diaries",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-afa6c1e106dc",
      "summary": "Individually cataloged book bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1613.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:afa6c1e106dc9bb7f0ec",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "object_date_text": "circa 1910",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afa6c1e106dc",
        "input_record_sha256": "32a5e4df31647fe10d5cbe56debdcf5f5cde13f5a832d71d0c87fdb4a61058d6",
        "original_fields": {
          "id": "artifact-afa6c1e106dc",
          "title": "The green canvas bag used to carry the diaries of Captain R. F. Scott, RN.",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212313",
          "accession": "ZBA1613",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Terra Nova expedition"
          ],
          "description": "Individually cataloged book bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1613.",
          "visual_url": "https://collections.rmg.co.uk/media/3/437/229/large_s1654_001.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212313",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "The green canvas bag used to carry the diaries of Captain R. F. Scott, RN.",
          "notes": "",
          "artifact_id": "ZBA1613",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/437/229/large_s1654_001.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged book bag associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1613.",
          "display_title": "Canvas bag used to carry Scott’s diaries",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "circa 1910",
            "sort_year": 1910,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
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      "record_sha256": "64d7830fc02c3e699328aba05910d3602d1eda3fe7ed0c452f0c3839a7108cbd"
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    {
      "id": "history:artifact-afd659886cc2",
      "legacy_id": "artifact-afd659886cc2",
      "kind": "historical",
      "title": "Approximate Bird’s-Eye View",
      "display_title": "Illustrated view of Amundsen’s South Pole route",
      "display_subtitle": "A drawn route illustration, not an aerial photograph.",
      "url": "vault.html#artifact-afd659886cc2",
      "summary": "Amundsen route illustration; not aerial photography.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "object_date_text": "1912",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afd659886cc2",
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        "original_fields": {
          "title": "Approximate Bird’s-Eye View",
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          "institution": "Wellesley College Library; reproduced by British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
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            "Antarctica",
            "historical"
          ],
          "description": "Amundsen route illustration; not aerial photography.",
          "identifier": "Rare Books 2370.f.13",
          "id": "artifact-afd659886cc2",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Rare Books 2370.f.13",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-afd659886cc2",
            "title": "Approximate Bird’s-Eye View",
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            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Amundsen route illustration; not aerial photography.",
          "display_title": "Illustrated view of Amundsen’s South Pole route",
          "display_subtitle": "A drawn route illustration, not an aerial photograph.",
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            "sort_year": 1912,
            "sort_month": null,
            "sort_day": null,
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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    {
      "id": "history:artifact-afd90249bbdc",
      "legacy_id": "artifact-afd90249bbdc",
      "kind": "historical",
      "title": "Lieut Evans and Day guide a motor sledge",
      "display_title": "Evans and Day guiding a motor sledge",
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      "url": "vault.html#artifact-afd90249bbdc",
      "summary": "Cataloged expedition photograph: Evans walks in front of a motor sledge holding a rope attached to its front. Day walks alongside the sledge.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:f4bab867a9c52ef70973",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:813f0d5b7e2c23b5ea31",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "historical related expedition photographs, NOT exact exposures",
        "asset": {
          "src": "assets/v14/5dd5bfc8215b-artifact-afd90249bbdc-related-1913.jpg",
          "title": "Lieut Evans and Day guide a motor sledge",
          "caption": "Related expedition photograph—not the catalogued exposure. Day’s motor under way. Same expedition motor-sledge operation; different view and moment, not the catalogued Evans/Day guiding exposure.",
          "credit": "Ponting, Herbert George photograph, Scott's Last Expedition, arranged by Leonard Huxley (London: Smith, Elder, 1913), vol. 1; Museum Victoria / Biodiversity Heritage Library scan via Internet Archive.",
          "rights": "Public domain. BHL metadata explicitly considers this work no longer under copyright protection. Independent 1913 book reproduction; no SPRI scan reuse permission implied.",
          "source_url": "https://archive.org/details/ScottquotslasteIScot",
          "rights_url": "https://archive.org/metadata/ScottquotslasteIScot",
          "width": 940,
          "height": 560,
          "fit": "contain",
          "visual_role": "historical related expedition photographs, NOT exact exposures",
          "sha256": "5dd5bfc8215b363bc86a8460480987a9887a54ae30793756bc5e02b406fe67ee",
          "source_manifest": "image-provenance-v14.json",
          "display_label": "Related expedition photograph—not the catalogued exposure",
          "source_limitations": "Authentic independent public-domain book scan. Original print/scan softness and paper tint retained; no generated detail. Keep the distinction from the catalogued exposure visible on the card and supporting image.",
          "transformations": null,
          "original_exposure_status": "held-no-cleared-exact-image",
          "counts_as_exact_source_coverage": false
        },
        "reuse_notice": "Public domain. BHL metadata explicitly considers this work no longer under copyright protection. Independent 1913 book reproduction; no SPRI scan reuse permission implied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-afd90249bbdc",
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        "original_fields": {
          "id": "artifact-afd90249bbdc",
          "artifact_id": "P2005/5/991",
          "title": "Lieut Evans and Day guide a motor sledge",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-991",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
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            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Evans walks in front of a motor sledge holding a rope attached to its front. Day walks alongside the sledge.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Evans walks in front of a motor sledge holding a rope attached to its front. Day walks alongside the sledge.",
          "display_title": "Evans and Day guiding a motor sledge",
          "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
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        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1910",
        "object_date_text": "1910",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b2d220266dd1",
        "input_record_sha256": "51b0bcbee060a9b9907e2458b3af31de018d1057dd2e306eb1521857c3ff297c",
        "original_fields": {
          "id": "artifact-b2d220266dd1",
          "title": "National flag of New Zealand — Terra Nova expedition",
          "date": "1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-489",
          "accession": "AAA0489",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Terra Nova expedition"
          ],
          "description": "Individually cataloged national flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA0489.",
          "visual_url": "https://collections.rmg.co.uk/media/325/868/d0447.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-489",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "National flag of New Zealand",
          "notes": "",
          "artifact_id": "AAA0489",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/325/868/d0447.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
          },
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged national flag associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA0489.",
          "display_title": "National flag of New Zealand — Terra Nova expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
          "chronology": {
            "date_label": "1910",
            "sort_year": 1910,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "288abaf5d027e3fd78f07e9b0bcc55a4bc4ef981cec5d1b57dc7623060f1c7bf"
    },
    {
      "id": "history:artifact-b39ad9bd13b7",
      "legacy_id": "artifact-b39ad9bd13b7",
      "kind": "historical",
      "title": "Sheets SQ 40-41/15 & Part SR 40-41/3 Mawson & Mount Twintop, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/13 & SR 41-42/1]",
      "display_title": "Topographic map of Mawson & Mount Twintop, Mac. Robertson Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-b39ad9bd13b7",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d59ed60185145db30a46",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-89.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 89. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail renders the original 1964 first-edition PDF rather than the 1983 reprint shown in the institutional preview. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/15 & Part SR 40-41/3 Mawson & Mount Twintop, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/13 & SR 41-42/1]",
          "href": "vault.html#artifact-b39ad9bd13b7"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "September 1964",
        "object_date_text": "September 1964",
        "sort_start_year": 1964,
        "sort_month": 9,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b39ad9bd13b7",
        "input_record_sha256": "2a3d6cb9369e6e773fc6fe12c0c4c6a178fcdb37f5db28d50cfdd2e01fe21929",
        "original_fields": {
          "id": "artifact-b39ad9bd13b7",
          "artifact_id": "AADC map 89",
          "accession": "AADC map 89",
          "title": "Sheets SQ 40-41/15 & Part SR 40-41/3 Mawson & Mount Twintop, Mac. Robertson Land, Australian Antarctic Territory [SQ 41-42/13 & SR 41-42/1]",
          "date": "September 1964",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=89",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "71 x 64.5 cm",
          "catalog_notes": "Mawson & Mount Twintop SQ 40-41/15 & Part SR 40-41/3 have been numbered according to a map numbering system adopted by Department of National Mapping in 1964 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1971. The map should now be quoted as SQ 41-42/13 & SR 41-42/1.",
          "visual_note": "Catalog-linked thumbnail filename indicates1983 although record publication date is1964; withheld pending edition match.",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-89.jpg",
            "width": 798,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 89. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=89",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "First PDF page rendered at 960px maximum dimension; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Topographic map of Mawson & Mount Twintop, Mac. Robertson Land",
          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
          "chronology": {
            "date_label": "September 1964",
            "sort_year": 1964,
            "sort_month": 9,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "0f14e9552b89266187b2e2e73ac428c008b77b49fa401a187b2bd7cc720ccaa6"
    },
    {
      "id": "history:artifact-b42aeb9d8839",
      "legacy_id": "artifact-b42aeb9d8839",
      "kind": "historical",
      "title": "Loading sledges by the “Terra Nova”",
      "display_title": "Loading sledges beside Terra Nova",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
      "url": "vault.html#artifact-b42aeb9d8839",
      "summary": "Cataloged expedition photograph: Two expedition members pack bags and bundles onto a sledge. Another stands by and watches. Other bags and bundles stand on the ice. Ship ‘Terra Nova’ and coastline in the background.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8f093bf67bd6407eb394",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1.1911",
        "object_date_text": "1.1911",
        "sort_start_year": 1911,
        "sort_month": 1,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b42aeb9d8839",
        "input_record_sha256": "01e75b0c37ffadb267241b0ff5eafff104f1b33d705c8514e85918b86880ea85",
        "original_fields": {
          "id": "artifact-b42aeb9d8839",
          "artifact_id": "P2005/5/199",
          "title": "Loading sledges by the “Terra Nova”",
          "date": "1.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-199",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
            "photography",
            "British Antarctic Expedition 1910-13 (Ponting Collection)",
            "Terra Nova expedition"
          ],
          "description": "Cataloged expedition photograph: Two expedition members pack bags and bundles onto a sledge. Another stands by and watches. Other bags and bundles stand on the ice. Ship ‘Terra Nova’ and coastline in the background.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Two expedition members pack bags and bundles onto a sledge. Another stands by and watches. Other bags and bundles stand on the ice. Ship ‘Terra Nova’ and coastline in the background.",
          "display_title": "Loading sledges beside Terra Nova",
          "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
          "chronology": {
            "date_label": "1.1911",
            "sort_year": 1911,
            "sort_month": 1,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "a30e51f76c7e26b699c6b90071c9f5314fe9586217f64e601fc1afa11bb4ad63"
    },
    {
      "id": "history:artifact-b504db9fa1cb",
      "legacy_id": "artifact-b504db9fa1cb",
      "kind": "historical",
      "title": "Scott letter to Clements Markham",
      "display_title": "Scott letter to Clements Markham",
      "display_subtitle": "Archival document or record.",
      "url": "vault.html#artifact-b504db9fa1cb",
      "summary": "Expedition letter explains the decision to send personnel home.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:488a20335dc62c22185b",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-02-27",
        "object_date_text": "1903-02-27",
        "sort_start_year": 1903,
        "sort_month": 2,
        "sort_day": 27,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b504db9fa1cb",
        "input_record_sha256": "55d4732f4eaaf1d5dc72c0a3dee52b8c4c219d252305f7a972bc40802b0506af",
        "original_fields": {
          "title": "Scott letter to Clements Markham",
          "date": "1903-02-27",
          "institution": "Royal Museums Greenwich",
          "source_url": "https://www.rmg.co.uk/collections/archive/rmgc-object-384033",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Discovery expedition"
          ],
          "description": "Expedition letter explains the decision to send personnel home.",
          "artifact_id": "MRK/46/104",
          "id": "artifact-b504db9fa1cb",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Expedition letter explains the decision to send personnel home.",
          "display_title": "Scott letter to Clements Markham",
          "display_subtitle": "Archival document or record.",
          "chronology": {
            "date_label": "1903-02-27",
            "sort_year": 1903,
            "sort_month": 2,
            "sort_day": 27,
            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "1d72fc8ad8b0c6ef0d1453eda7c1e528a9bc91c48b3605cf3d6fb8bd71a17730"
    },
    {
      "id": "history:artifact-b5b5db4cc144",
      "legacy_id": "artifact-b5b5db4cc144",
      "kind": "historical",
      "title": "Elephant Island party waving toward a boat",
      "display_title": "Elephant Island party waving toward a boat",
      "display_subtitle": "Archival photograph — Imperial Trans-Antarctic Expedition.",
      "url": "vault.html#artifact-b5b5db4cc144",
      "summary": "Frank Hurley photograph cataloged under a historical rescue caption.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:d7058ddbe6ee4ee40eeb",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/elephant-island-loc.jpg",
          "caption": "Actual artifact image; source credit: Library of Congress.",
          "title": "Elephant Island party waving toward a boat",
          "href": "vault.html#artifact-b5b5db4cc144"
        },
        "reuse_notice": "LOC rights advisory: No known restrictions on publication.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1916",
        "object_date_text": "circa 1916",
        "sort_start_year": 1916,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-b5b5db4cc144",
        "input_record_sha256": "f2756664cf554f04ee4a25a825d5d9c25d4639488d704cbf132814e216221b1b",
        "original_fields": {
          "title": "Elephant Island party waving toward a boat",
          "date": "circa 1916",
          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/item/2013646124/",
          "rights": "LOC rights advisory: No known restrictions on publication.",
          "categories": [
            "photography",
            "Imperial Trans-Antarctic Expedition"
          ],
          "description": "Frank Hurley photograph cataloged under a historical rescue caption.",
          "artifact_id": "LOC 2013646124",
          "notes": "Preserve distinction between catalog caption and unverified exact exposure event; not independently dated to rescue day.",
          "verification": "Institutional item metadata and explicit rights advisory checked.",
          "asset_status": "reuse-statement-verified",
          "id": "artifact-b5b5db4cc144",
          "visual_source": {
            "id": "artifact-b5b5db4cc144",
            "title": "Elephant Island party waving toward a boat",
            "official_source_url": "https://www.loc.gov/item/2013646124/",
            "official_viewer_url": "https://www.loc.gov/resource/cph.3a12746/",
            "direct_image_url": "https://tile.loc.gov/storage-services/service/pnp/cph/3a10000/3a12000/3a12700/3a12746r.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Frank Hurley photograph cataloged under a historical rescue caption.",
          "display_title": "Elephant Island party waving toward a boat",
          "display_subtitle": "Archival photograph — Imperial Trans-Antarctic Expedition.",
          "chronology": {
            "date_label": "circa 1916",
            "sort_year": 1916,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "4b545e076798a8cdf1271e9568c6512f48c38205db8b053c2682ec3c0b23e0b3"
    },
    {
      "id": "history:artifact-b86a41e607f8",
      "legacy_id": "artifact-b86a41e607f8",
      "kind": "historical",
      "title": "Bayliss Antarctica Sheet 1",
      "display_title": "Antarctic exploration map by Bayliss",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-b86a41e607f8",
      "summary": "South-centered azimuthal equidistant map compiles Antarctic exploration.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:09e7ee41eda2dfd17161",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-13393.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 13393. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Bayliss Antarctica Sheet 1",
          "href": "vault.html#artifact-b86a41e607f8"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1939",
        "object_date_text": "1939",
        "sort_start_year": 1939,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
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          ],
          "description": "South-centered azimuthal equidistant map compiles Antarctic exploration.",
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          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
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            "rights_status": "AADC scientific-data footer states CC BY4.0; scan-specific exception check pending.",
            "visual_type": "PDF scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact official PDF link; browser delivery not independently checked, tool reports size limit."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "display_subtitle": "Historical regional or expedition map.",
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      "summary": "A separately catalogued expedition or regional map; scale 1 : 12 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March 1937",
        "object_date_text": "March 1937",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
      },
      "provenance": {
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          ],
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "kind": "historical",
      "title": "The face of the Matterhorn Berg. October 8th 1911",
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      "summary": "Cataloged expedition photograph: An expedition member climbs the face of a jagged iceberg.",
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      "topics": [
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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      },
      "dates": {
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        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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      "provenance": {
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          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-533",
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          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-533",
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          "visual_status": "institutional-image-record-delivery-unverified",
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
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      "url": "vault.html#artifact-ba7df98e2b13",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 2 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
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        "limitations": null
      },
      "sources": [
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        "source_rechecked_at": null
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        "limitations": null
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      "assessment": {
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        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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      "claim": null,
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          "date": "1904-04-22",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
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          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/313",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
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          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
          "display_title": "Scotia anchored off Gough Island",
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      "kind": "historical",
      "title": "Emperor penguin eggs",
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      "display_subtitle": "Archival photograph of three emperor penguin eggs with a ruler.",
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      "claim": null,
      "topics": [
        "Expedition photographs"
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
        {
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          "role": "image reproduction provenance; not proof of a linked interpretation",
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          "title": "Three emperor penguin eggs arranged above a measuring ruler, photographed by Herbert Ponting in 1911.",
          "caption": "Emperor penguin eggs from Cape Crozier, 1911 — Herbert Ponting.",
          "credit": "Herbert Ponting, 1911. Scott Polar Research Institute, University of Cambridge, P2005/5/839. Via Wikimedia Commons; public domain.",
          "rights": "Public domain, as marked on the item-level Wikimedia Commons file page; supported by visually matching 1913 published plate and BHL public-domain statement.",
          "source_url": "https://commons.wikimedia.org/wiki/File:Emperor_Penguin_eggs.jpg",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "sort_day": null,
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        "date_basis": "catalog date of this artifact",
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        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
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          "artifact_id": "P2005/5/839",
          "title": "Emperor penguin eggs",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
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          "label": "record",
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            "title": "Three emperor penguin eggs arranged above a measuring ruler, photographed by Herbert Ponting in 1911.",
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            "credit": "Herbert Ponting, 1911. Scott Polar Research Institute, University of Cambridge, P2005/5/839. Via Wikimedia Commons; public domain.",
            "rights": "Public domain, as marked on the item-level Wikimedia Commons file page; supported by visually matching 1913 published plate and BHL public-domain statement.",
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          "supporting_images": [
            {
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              "credit": "Herbert Ponting, 1911. Scott Polar Research Institute, University of Cambridge, P2005/5/839. Via Wikimedia Commons; public domain.",
              "rights": "Public domain, as marked on the item-level Wikimedia Commons file page; supported by visually matching 1913 published plate and BHL public-domain statement.",
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              "rights_url": "https://commons.wikimedia.org/wiki/File:Emperor_Penguin_eggs.jpg",
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          ],
          "sources": [
            {
              "url": "https://commons.wikimedia.org/wiki/File:Emperor_Penguin_eggs.jpg",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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          ],
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          "display_subtitle": "Archival photograph of three emperor penguin eggs with a ruler.",
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            "date_precision": "year",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-be2c135e2a28",
      "legacy_id": "artifact-be2c135e2a28",
      "kind": "historical",
      "title": "Crystals in dark room of Cape Evans hut",
      "display_title": "Ice crystals in the Cape Evans hut darkroom",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Debenham Collection).",
      "url": "vault.html#artifact-be2c135e2a28",
      "summary": "Cataloged expedition photograph: Close up of ice crystals.",
      "claim": null,
      "topics": [
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        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
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        "date_basis": "catalog date of this artifact",
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          "institution": "Scott Polar Research Institute, University of Cambridge",
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          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
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      "kind": "historical",
      "title": "Sketch Map to illustrate the Exploration of the Swedish Antarctic Expedition 1902-3",
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      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-be35054ed9a9",
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      "claim": null,
      "topics": [
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      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1904",
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        "review_date_basis": "not recorded",
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        "original_fields": {
          "id": "artifact-be35054ed9a9",
          "artifact_id": "AADC map 3682",
          "accession": "AADC map 3682",
          "title": "Sketch Map to illustrate the Exploration of the Swedish Antarctic Expedition 1902-3",
          "date": "1904",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3682",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
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          "description": "A separately catalogued expedition or regional map; scale 1 : 3 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
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          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 3 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "-",
          "physical_size": "24.5 x 38.7 cm",
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          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
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          "label": "record",
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      "record_sha256": "4bd7d72e7316f99c5d809805fa310fecd780632080a7cc952292e856893dd057"
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      "kind": "historical",
      "title": "Psalter world map, Add MS 28681",
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      "display_subtitle": "The manuscript reference Add MS 28681 is the library’s identifier.",
      "url": "vault.html#artifact-bf8832b22c1f",
      "summary": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
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      "topics": [
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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          "transformations": "Proportional downsize only; full supplied frame retained.",
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        "artifact_date_text": "c. 1260",
        "object_date_text": "c. 1260",
        "sort_start_year": 1260,
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        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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      "provenance": {
        "input": "reader-data.json",
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          "title": "Psalter world map, Add MS 28681",
          "creator": "Unknown English illuminator",
          "date": "c. 1260",
          "institution": "British Library",
          "source_url": "https://searcharchives.bl.uk/catalog/032-002020101",
          "supplemental_or_image_url": "https://omci.inha.fr/s/ocmi/item/259",
          "classification": "Christian mappa mundi",
          "relevance_and_caution": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
          "categories": [
            "Christian mappa mundi"
          ],
          "asset_status": "source-link-only",
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Jerusalem-centered sacred geography; circular composition alone does not establish flat-Earth doctrine.",
          "display_title": "Medieval world map centered on Jerusalem",
          "display_subtitle": "The manuscript reference Add MS 28681 is the library’s identifier.",
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            "date_label": "c. 1260",
            "sort_year": 1260,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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            "caption": "The medieval Psalter world map, British Library Add MS 28681, folio 9 r, circa 1260 s. East is at the top and Jerusalem at the center. A historical cosmographical manuscript, not a surveyed Antarctic map.",
            "credit": "British Library, Add MS 28681, folio 9 r; image reference F 60039-95. Institution-released digital image via Wikimedia Commons, CC 0 1.0.",
            "rights": "Exact institution-provided file released under CC 0 1.0; British Library Images Online March 2014 release, with embedded metadata Public Domain from the British Library collections 2013. This is specific released file, not blanket permission for all BL images.",
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            "source_limitations": null,
            "transformations": "Proportional downsize only; full supplied frame retained.",
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            "counts_as_exact_source_coverage": null
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              "credit": "British Library, Add MS 28681, folio 9 r; image reference F 60039-95. Institution-released digital image via Wikimedia Commons, CC 0 1.0.",
              "rights": "Exact institution-provided file released under CC 0 1.0; British Library Images Online March 2014 release, with embedded metadata Public Domain from the British Library collections 2013. This is specific released file, not blanket permission for all BL images.",
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          ],
          "sources": [
            {
              "url": "https://searcharchives.bl.uk/catalog/032-002020101",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
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              "role": "image reuse conditions"
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          ]
        }
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    {
      "id": "history:artifact-buache-bnf1754",
      "legacy_id": "artifact-buache-bnf1754",
      "kind": "historical",
      "title": "Buache’s Carte des terres australes",
      "display_title": "Buache’s map of the southern lands",
      "display_subtitle": "Chart based on Bouvet expedition material; not a modern map beneath the ice.",
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      "summary": "A southern-region chart compiled from Bouvet de Lozier’s expedition material. The BnF dates this edition to 1754. It is not a modern subglacial survey and is distinct from later Buache maps.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:269366ca61e289966fba",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:fd9fba0cbf29fac698e3",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
        {
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      "visual": {
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        "role": "original historical map reproduction, different physical copy",
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          "title": "Buache, Carte des terres australes (1754 map; Rumsey atlas copy catalogued 1770?)",
          "caption": "Buache’s Carte des terres australes, dated 1754 on the map, shown from the independent David Rumsey atlas copy (atlas catalogued 1770?). This is not the BnF physical sheet. Its conjectural southern geography is not a modern survey beneath Antarctic ice.",
          "credit": "Philippe Buache, after Bouvet de Lozier and Guillaume Delisle; engraved by G. Delahaye. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries, 5698.002.",
          "rights": "David Rumsey current policy expressly permits use in print/digital publications by for-profit or nonprofit publishers without charge, with credit. Underlying 1754 map is historical public-domain work. General archive license CC BY-NC-SA 3.0 also recorded; relying on the separate express current publication permission, not claiming CC BY 4.0. Stand-alone for-sale facsimile reproduction requires permission. Exact source record exposes Download 1.",
          "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~25808~1080049:Terres-Australes-",
          "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
          "width": 860,
          "height": 675,
          "fit": "contain",
          "visual_role": "original historical map reproduction, different physical copy",
          "sha256": "0b4030afd0709ad24893fffc40e7a73d3a3867f08faa37dc66f0357c9346fa30",
          "source_manifest": "image-provenance-v14.json",
          "display_label": null,
          "source_limitations": "Map dated 1754; containing atlas catalogued 1770 with uncertainty in full title (1770?). Different physical copy from BnF FRBNF 40592237. Preserve both dates/copy distinction.",
          "transformations": "Thumbnail crops blank paper margins only, preserving complete engraved map, title, explanatory text and inset; no upscale. Full digitized sheet is supplied separately.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "David Rumsey current policy expressly permits use in print/digital publications by for-profit or nonprofit publishers without charge, with credit. Underlying 1754 map is historical public-domain work. General archive license CC BY-NC-SA 3.0 also recorded; relying on the separate express current publication permission, not claiming CC BY 4.0. Stand-alone for-sale facsimile reproduction requires permission. Exact source record exposes Download 1.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1754",
        "object_date_text": "1754",
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        "sort_day": null,
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
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        "input": "reader-data.json",
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          "id": "artifact-buache-bnf1754",
          "title": "Buache’s Carte des terres australes",
          "date": "1754",
          "institution": "Bibliothèque nationale de France",
          "source_url": "https://catalogue.bnf.fr/ark:/12148/cb40592237k",
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          "rights": "BnF commercial reproduction requires authorization; source link only. No image copied.",
          "rights_url": "https://www.bnf.fr/fr/faire-une-utilisation-commerciale-dune-reproduction",
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          "verification": "Institutional object/catalog record checked 2026-10-28; no proof of modern speculative claims.",
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          "kind": "historical",
          "label": "record",
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          "display_title": "Buache’s map of the southern lands",
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            "date_label": "1754",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
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            "title": "Buache, Carte des terres australes (1754 map; Rumsey atlas copy catalogued 1770?)",
            "caption": "Buache’s Carte des terres australes, dated 1754 on the map, shown from the independent David Rumsey atlas copy (atlas catalogued 1770?). This is not the BnF physical sheet. Its conjectural southern geography is not a modern survey beneath Antarctic ice.",
            "credit": "Philippe Buache, after Bouvet de Lozier and Guillaume Delisle; engraved by G. Delahaye. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries, 5698.002.",
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            "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
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            "height": 675,
            "fit": "contain",
            "visual_role": "original historical map reproduction, different physical copy",
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            "source_limitations": "Map dated 1754; containing atlas catalogued 1770 with uncertainty in full title (1770?). Different physical copy from BnF FRBNF 40592237. Preserve both dates/copy distinction.",
            "transformations": "Thumbnail crops blank paper margins only, preserving complete engraved map, title, explanatory text and inset; no upscale. Full digitized sheet is supplied separately.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
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              "title": "Buache, Carte des terres australes (1754 map; Rumsey atlas copy catalogued 1770?)",
              "caption": "Full source page / supporting original. Buache’s Carte des terres australes, dated 1754 on the map, shown from the independent David Rumsey atlas copy (atlas catalogued 1770?). This is not the BnF physical sheet. Its conjectural southern geography is not a modern survey beneath Antarctic ice.",
              "credit": "Philippe Buache, after Bouvet de Lozier and Guillaume Delisle; engraved by G. Delahaye. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries, 5698.002.",
              "rights": "David Rumsey current policy expressly permits use in print/digital publications by for-profit or nonprofit publishers without charge, with credit. Underlying 1754 map is historical public-domain work. General archive license CC BY-NC-SA 3.0 also recorded; relying on the separate express current publication permission, not claiming CC BY 4.0. Stand-alone for-sale facsimile reproduction requires permission. Exact source record exposes Download 1.",
              "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~25808~1080049:Terres-Australes-",
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              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
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              "role": "image reuse conditions"
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    {
      "id": "history:artifact-c01c4280e6cd",
      "legacy_id": "artifact-c01c4280e6cd",
      "kind": "historical",
      "title": "Burgee, Royal Yacht Squadron — Terra Nova expedition",
      "display_title": "Royal Yacht Squadron flag from the Terra Nova expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-c01c4280e6cd",
      "summary": "Individually cataloged burgee associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1616.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "object_date_text": "circa 1910",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
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        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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        "input": "reader-data.json",
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          "id": "artifact-c01c4280e6cd",
          "title": "Burgee, Royal Yacht Squadron — Terra Nova expedition",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212316",
          "accession": "ZBA1616",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
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          "categories": [
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          "description": "Individually cataloged burgee associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1616.",
          "visual_url": "https://collections.rmg.co.uk/media/2/151/261/l7102.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212316",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
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          "visual_status": "primary-image-link-delivery-unverified",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
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          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged burgee associated by Royal Museums Greenwich with the Terra Nova expedition; accession ZBA1616.",
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          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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    {
      "id": "history:artifact-c301b6133e40",
      "legacy_id": "artifact-c301b6133e40",
      "kind": "historical",
      "title": "Sheets SQ 40-41/13 & Part SR 40-41/1 Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/15 & Part SR 39-40/3]",
      "display_title": "Topographic map of Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-c301b6133e40",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
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        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-101.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 101. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheets SQ 40-41/13 & Part SR 40-41/1 Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/15 & Part SR 39-40/3]",
          "href": "vault.html#artifact-c301b6133e40"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "October 1967",
        "object_date_text": "October 1967",
        "sort_start_year": 1967,
        "sort_month": 10,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c301b6133e40",
        "input_record_sha256": "8a59eb22b96aa45d5ded16d8904d8a2964e7d3e72fa439a5f7b7e0bba059c4da",
        "original_fields": {
          "id": "artifact-c301b6133e40",
          "artifact_id": "AADC map 101",
          "accession": "AADC map 101",
          "title": "Sheets SQ 40-41/13 & Part SR 40-41/1 Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land, Australian Antarctic Territory [SQ 39-40/15 & Part SR 39-40/3]",
          "date": "October 1967",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
            "historical-map",
            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/250k/SQ40-41_13_%26_Part_SR40-41_1_1967_250k_101_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 250 000",
          "publisher": "Department of National Development, Division of National Mapping (Australia)",
          "projection": "Universal Transverse Mercator",
          "physical_size": "71 x 67 cm",
          "catalog_notes": "Rayner Peak & Dismal Mountains SQ 40-41/13 & Part 40-41/1 have been numbered according to a map numbering system adopted by Department of National Mapping in 1967 for the 1:250,000 series which is different from that adopted for the 1:1 million map series in 1974. The map should now be quoted as SQ 39-40/15 & Part SR 39-40/3.",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/250k/SQ40-41_13_%26_Part_SR40-41_1_1967_250k_101_thumb.jpg",
          "visual_status": "verified-cleared-thumbnail",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
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            "width": 848,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 101. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=101",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
          },
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Topographic map of Rayner Peak & Dismal Mountains, Enderby Land - Kemp Land",
          "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
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            "date_label": "October 1967",
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            "sort_month": 10,
            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
      },
      "record_sha256": "448111f6f2dc4b0bf05b02603ba800302bf065704bd745f770d5c58f4f453bef"
    },
    {
      "id": "history:artifact-c45e9a04cab9",
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      "kind": "historical",
      "title": "J.I. Moore with Imp (dog), 15 December 1936",
      "display_title": "Moore with Imp the sled dog",
      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
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      "summary": "Cataloged expedition photograph: Moore crouches on the snow with a sled dog (poor quality image).",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "object_date_text": "1936",
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        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c45e9a04cab9",
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        "original_fields": {
          "id": "artifact-c45e9a04cab9",
          "artifact_id": "P51/8/F640",
          "title": "J.I. Moore with Imp (dog), 15 December 1936",
          "date": "1936",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
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          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f640",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "browse_topic": "Expedition photographs",
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          "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "kind": "historical",
      "title": "Ponting and Nelson camped by the Penguinry, Cape Royds. November 1911",
      "display_title": "Ponting and Nelson camping by Cape Royds penguin colony",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
      "url": "vault.html#artifact-c5caa80129d3",
      "summary": "Cataloged expedition photograph: Ponting and Nelson stand by a pyramid tent and a loaded sledge. A tripod stands on the snow between them.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "11.1911",
        "object_date_text": "11.1911",
        "sort_start_year": 1911,
        "sort_month": 11,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "id": "artifact-c5caa80129d3",
          "artifact_id": "P2005/5/669",
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          "date": "11.1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
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          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-669",
          "visual_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-669",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
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          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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    {
      "id": "history:artifact-c8473d708a47",
      "legacy_id": "artifact-c8473d708a47",
      "kind": "historical",
      "title": "Prima Pars, Petri Apiani Cosmographia",
      "display_title": "Apian’s rotating paper chart for astronomy",
      "display_subtitle": "A volvelle uses rotating paper discs to calculate astronomical information.",
      "url": "vault.html#artifact-c8473d708a47",
      "summary": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying.",
      "claim": null,
      "topics": [
        "Cosmology & celestial charts"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:8b838b7983c312ad3d01",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:74351ff78458d4dd5a54",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": true,
        "role": "historical reproduction",
        "asset": {
          "src": "assets/v13/0292b43359c3-artifact-c8473d708a47-thumb.jpg",
          "title": "Prima Pars: Instrumentum Theoricae Solis",
          "caption": "Prima Pars solar volvelle, Petri Apiani Cosmographia, 1540; ETH Zürich copy.",
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        "reuse_notice": "Public Domain Mark",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "source_url": "https://www.si.edu/object/silgoi_68483",
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          "relevance_and_caution": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying.",
          "rights": "No Copyright – United States; metadata CC0.",
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          "description": "Instructional astronomy and geography; distinguish celestial mechanics from terrestrial surveying.",
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              "credit": "Peter Apian, Petri Apiani Cosmographia, Antwerp 1540. ETH-Bibliothek Zürich, Rar 4204, https://doi.org/10.3931/e-rara-2773 / Public Domain Mark.",
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          "sources": [
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              "url": "https://www.e-rara.ch/zut/content/titleinfo/863194",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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          ],
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    {
      "id": "history:artifact-c8acf43125b3",
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      "kind": "historical",
      "title": "Sheet SQ 38-39/11 Mount Riiser-Larsen, Enderby Land, Australian Antarctic Territory [SQ 39-40/16]",
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      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-c8acf43125b3",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-96.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 96. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SQ 38-39/11 Mount Riiser-Larsen, Enderby Land, Australian Antarctic Territory [SQ 39-40/16]",
          "href": "vault.html#artifact-c8acf43125b3"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "March-1963",
        "object_date_text": "March-1963",
        "sort_start_year": 1963,
        "sort_month": 3,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-c8acf43125b3",
        "input_record_sha256": "53b0134c9de48403d1e7b49124cd1ff0ae5186f45208c711e3e8bdebcd784e02",
        "original_fields": {
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          "artifact_id": "AADC map 96",
          "accession": "AADC map 96",
          "title": "Sheet SQ 38-39/11 Mount Riiser-Larsen, Enderby Land, Australian Antarctic Territory [SQ 39-40/16]",
          "date": "March-1963",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=96",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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          "visual_url": null,
          "official_viewer_url": null,
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          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
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          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
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            "width": 939,
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            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
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          "label": "record",
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        "reuse_notice": "No known restrictions on publication",
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          "rights": "Public domain. BHL metadata explicitly considers this work no longer under copyright protection. Independent 1913 book reproduction; no SPRI scan reuse permission implied.",
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      "id": "history:artifact-c9b0891468ab",
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      "kind": "historical",
      "title": "Crampons — Australasian Antarctic Expedition",
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      "summary": "Individually cataloged crampons associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4240.",
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      "topics": [
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      "title": "Sketch plans of S.Y. Aurora 1874 showing side cross-section, deck plan and between deck plan. See also Map 2",
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      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 1, 70cm x 101 cm.",
      "claim": null,
      "topics": [
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "review_date_basis": "not recorded",
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          "artifact_id": "SLNSW AAE map 1",
          "accession": "Australasian Antarctic Expedition records, map 1",
          "title": "Sketch plans of S.Y. Aurora 1874 showing side cross-section, deck plan and between deck plan. See also Map 2",
          "date": "1911-1914",
          "creator": "Davis, John King.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
            "manuscript-plan",
            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 1, 70cm x 101 cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 1, 70cm x 101 cm.",
          "display_title": "Aurora ship plans: side view and decks",
          "display_subtitle": "The title refers to the ship’s 1874 date; these plans are cataloged 1911–1914.",
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            "date_label": "1911-1914",
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            "sort_month": null,
            "sort_day": null,
            "end_year": 1914,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "cataloged plan dates, not ship construction in 1874",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "1874",
            "meaning": "ship date in title, not the cataloged plan date",
            "used_for_default_sort": false
          }
        }
      },
      "record_sha256": "fef03c15a25a0eef94e6bab8aaca86119c4d1214c4e4ef5f44dac540821e36df"
    },
    {
      "id": "history:artifact-ca0293e761eb",
      "legacy_id": "artifact-ca0293e761eb",
      "kind": "historical",
      "title": "Map plotting the track of the S. Y. Aurora in the Davis Sea, Southern Ocean, 1913",
      "display_title": "Aurora’s route through the Davis Sea",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-ca0293e761eb",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 9, 61cm x 101cm.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "object_date_text": "1913",
        "sort_start_year": 1913,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ca0293e761eb",
        "input_record_sha256": "bd15dcd5b43751636a9587efce00516509e2004179529ede0f1929ddaea67c81",
        "original_fields": {
          "id": "artifact-ca0293e761eb",
          "artifact_id": "SLNSW AAE map 9",
          "accession": "Australasian Antarctic Expedition records, map 9",
          "title": "Map plotting the track of the S. Y. Aurora in the Davis Sea, Southern Ocean, 1913",
          "date": "1913",
          "creator": "Not identified in inventory",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
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          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 9, 61cm x 101cm.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
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          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
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          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 9, 61cm x 101cm.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      },
      "record_sha256": "ed93dee9fd647b46411d2aea57812e90064a938c8e6e19f9600bfa7d74d0c8f1"
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    {
      "id": "history:artifact-ca2b3553ca9c",
      "legacy_id": "artifact-ca2b3553ca9c",
      "kind": "historical",
      "title": "Sledge harness — Australasian Antarctic Expedition",
      "display_title": "Sledge harness — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-ca2b3553ca9c",
      "summary": "Individually cataloged sledge harness associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4219.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ca2b3553ca9cb2432258",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ca2b3553ca9c",
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        "original_fields": {
          "id": "artifact-ca2b3553ca9c",
          "title": "Sledge harness — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3974",
          "accession": "AAA4219",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
            "expedition-equipment",
            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged sledge harness associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4219.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Sledge harness",
          "notes": "",
          "artifact_id": "AAA4219",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged sledge harness associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4219.",
          "display_title": "Sledge harness — Australasian Antarctic Expedition",
          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
          "chronology": {
            "date_label": "1911-14",
            "sort_year": 1911,
            "sort_month": null,
            "sort_day": null,
            "end_year": 1914,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
      },
      "record_sha256": "a93f24a951af3eaa016dee35a271b32f3646e953b6b3196c64994986dd08c3d5"
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    {
      "id": "history:artifact-cbdb4faa44cd",
      "legacy_id": "artifact-cbdb4faa44cd",
      "kind": "historical",
      "title": "Kunyu wanguo quantu",
      "display_title": "Ricci’s Chinese-language world map",
      "display_subtitle": "Chinese and European scholars collaborated on this six-panel map.",
      "url": "vault.html#artifact-cbdb4faa44cd",
      "summary": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:17fb60f5e5041ea8d77d",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:f5551d51d7f10c44163c",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": true,
        "role": "original artifact, technical contact layout of two source scans",
        "asset": {
          "src": "assets/v13/a00ef42217f5-ricci-1602-two-groups-contact.jpg",
          "title": "Kun yu wan guo quan tu, 1602",
          "caption": "Ricci’s 1602 world map, James Ford Bell Foundation copy. The two three-panel LOC scans are shown side by side with a visible gap; this is a contact layout, not an invisibly stitched reconstruction. Conjectural southern geography is not a modern Antarctic survey.",
          "credit": "Matteo Ricci with Li Zhizao and Chinese collaborators, 1602. James Ford Bell Foundation copy; digital reproduction: Library of Congress, Geography and Map Division, LCCN 2010585650.",
          "rights": "LOC Geography and Map Division: free to use and reuse unless contrary Rights Advisory; none present on exact record.",
          "source_url": "https://www.loc.gov/item/2010585650/",
          "rights_url": "https://www.loc.gov/resource/g3200.ex000006Za/?sp=1",
          "width": 1200,
          "height": 538,
          "fit": "contain",
          "visual_role": "original artifact, technical contact layout of two source scans",
          "sha256": "a00ef42217f50bba23d347aabdab4b3e06eee6b5a211d8d1680aab26098cbe26",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC Geography and Map Division: free to use and reuse unless contrary Rights Advisory; none present on exact record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1602",
        "object_date_text": "1602",
        "sort_start_year": 1602,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-cbdb4faa44cd",
          "title": "Kunyu wanguo quantu",
          "creator": "Matteo Ricci with Li Zhizao and Chinese collaborators",
          "date": "1602",
          "institution": "University of Minnesota, James Ford Bell Library",
          "source_url": "https://www.lib.umn.edu/collections/special/bell/ricci",
          "supplemental_or_image_url": null,
          "classification": "World map",
          "relevance_and_caution": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
          "categories": [
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          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-cbdb4faa44cd",
            "title": "Kunyu wanguo quantu",
            "official_source_url": "https://www.lib.umn.edu/collections/special/bell/ricci",
            "official_viewer_url": "https://umedia.lib.umn.edu/item/p16022coll251:8823",
            "direct_image_url": null,
            "visual_status": "primary-viewer-link-delivery-unverified",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "primary-source artifact reproduction",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact View the Ricci Map link on James Ford Bell Library page; viewer returned403 to tool."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Chinese-European collaboration; compare continental outlines and placement, not evidence of hidden polar territory.",
          "display_image": {
            "src": "assets/v13/a00ef42217f5-ricci-1602-two-groups-contact.jpg",
            "title": "Kun yu wan guo quan tu, 1602",
            "caption": "Ricci’s 1602 world map, James Ford Bell Foundation copy. The two three-panel LOC scans are shown side by side with a visible gap; this is a contact layout, not an invisibly stitched reconstruction. Conjectural southern geography is not a modern Antarctic survey.",
            "credit": "Matteo Ricci with Li Zhizao and Chinese collaborators, 1602. James Ford Bell Foundation copy; digital reproduction: Library of Congress, Geography and Map Division, LCCN 2010585650.",
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            "source_url": "https://www.loc.gov/item/2010585650/",
            "rights_url": "https://www.loc.gov/resource/g3200.ex000006Za/?sp=1",
            "width": 1200,
            "height": 538,
            "fit": "contain",
            "visual_role": "original artifact, technical contact layout of two source scans",
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              "title": "Kun yu wan guo quan tu, 1602",
              "caption": "Full source page / supporting original. Ricci’s 1602 world map, James Ford Bell Foundation copy. The two three-panel LOC scans are shown side by side with a visible gap; this is a contact layout, not an invisibly stitched reconstruction. Conjectural southern geography is not a modern Antarctic survey.",
              "credit": "Matteo Ricci with Li Zhizao and Chinese collaborators, 1602. James Ford Bell Foundation copy; digital reproduction: Library of Congress, Geography and Map Division, LCCN 2010585650.",
              "rights": "LOC Geography and Map Division: free to use and reuse unless contrary Rights Advisory; none present on exact record.",
              "source_url": "https://www.loc.gov/item/2010585650/",
              "rights_url": "https://www.loc.gov/resource/g3200.ex000006Za/?sp=1",
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              "visual_role": "original artifact, technical contact layout of two source scans",
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            {
              "src": "assets/v13/4764878e2c3c-ricci-1602-right-three-panels.jpg",
              "title": "Kun yu wan guo quan tu, 1602",
              "caption": "Full source page / supporting original. Ricci’s 1602 world map, James Ford Bell Foundation copy. The two three-panel LOC scans are shown side by side with a visible gap; this is a contact layout, not an invisibly stitched reconstruction. Conjectural southern geography is not a modern Antarctic survey.",
              "credit": "Matteo Ricci with Li Zhizao and Chinese collaborators, 1602. James Ford Bell Foundation copy; digital reproduction: Library of Congress, Geography and Map Division, LCCN 2010585650.",
              "rights": "LOC Geography and Map Division: free to use and reuse unless contrary Rights Advisory; none present on exact record.",
              "source_url": "https://www.loc.gov/item/2010585650/",
              "rights_url": "https://www.loc.gov/resource/g3200.ex000006Za/?sp=1",
              "width": 1600,
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              "visual_role": "original artifact, technical contact layout of two source scans",
              "sha256": "4764878e2c3c889e247ba3ba009027e2a2c1fb487ff8758bcc3aa57fe77f8338",
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          ],
          "sources": [
            {
              "url": "https://www.loc.gov/item/2010585650/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/g3200.ex000006Za/?sp=1",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Ricci’s Chinese-language world map",
          "display_subtitle": "Chinese and European scholars collaborated on this six-panel map.",
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            "date_label": "1602",
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            "sort_month": null,
            "sort_day": null,
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-cbecfd3ef285",
      "legacy_id": "artifact-cbecfd3ef285",
      "kind": "historical",
      "title": "Griffith Taylor, Debenham & Gran in their Cubicle",
      "display_title": "Taylor, Debenham and Gran in their hut cubicle",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
      "url": "vault.html#artifact-cbecfd3ef285",
      "summary": "Cataloged expedition photograph: In the interior of the hut, Taylor, smoking a pipe, works on a piece of equipment, Debenham reads and Gran writes in a book. They sit at a table in between two sets of bunks. Book shelves are on the wall behind the table.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:be720e56e2530f999834",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:0bcc134db683a058755b",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5811e734961044d1a6cf",
          "role": "institutional or documentary record",
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      ],
      "visual": {
        "embedded": true,
        "role": "historical reproduction",
        "asset": {
          "src": "assets/v13/9521a8a9fcb0-artifact-cbecfd3ef285-ponting-book.jpg",
          "title": "Griffith Taylor, Debenham & Gran in their Cubicle",
          "caption": "The geologists' cubicle. Public-domain 1922 book reproduction. Book framing trims peripheral hut details; the three men's postures, books, instruments and furnishings match the original exposure.",
          "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
          "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
          "source_url": "https://archive.org/details/greatwhitesouthb00pont",
          "rights_url": "https://www.loc.gov/item/23026514/",
          "width": 828,
          "height": 547,
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            {
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      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 22, 69cm x 103cm. Shackleton Glacier. Harrison Island. Watson's Nunataks. New Island. Bay of Winds. Kennedy Island. Watson Glacier. Mount Davis. Pyramid Mount.",
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      "title": "Detail of floe, and penguins. Dec. 24th 1910",
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          "institution": "Scott Polar Research Institute, University of Cambridge",
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          "summary": "Cataloged expedition photograph: Hooper and Dimitri Geroff stand on the ice by a seal which lies at their feet. Hooper prods it with a stick. Coast and icebergs in background.",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "display_title": "Terra Nova stopped by pack ice",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
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      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "object_date_text": "11.12.1910",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
      },
      "provenance": {
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          "date": "11.12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          ],
          "description": "Cataloged expedition photograph: View of ship ‘Terra Nova’, some sails set, over pack ice.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
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          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "label": "record",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
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      "kind": "historical",
      "title": "Antarctica 1956–1960",
      "display_title": "Soviet overview map of Antarctica",
      "display_subtitle": "Historical regional or expedition map.",
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      "summary": "Soviet overview map issued at 1:20,000,000.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1960",
        "object_date_text": "1960",
        "sort_start_year": 1960,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
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          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=2673",
          "rights": "Unknown for original map/reproduction; AADC scientific-data footer alone is not a map-specific license",
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          ],
          "description": "Soviet overview map issued at 1:20,000,000.",
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            "visual_status": "primary-image-link-delivery-unverified",
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            "visual_type": "institutional reproduction of original artifact",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact link extracted from holding-institution HTML or official preview link. Not an AI reconstruction. Image binary rendering not independently checked for every URL. AADC endpoint redirected or failed this tool; image link is source-grounded but current delivery needs browser check."
          },
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        "limitations": null
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            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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      "sources": [
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          "role": "image reproduction provenance; not proof of a linked interpretation",
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          "caption": "The Southern Party, 1911. Public-domain 1922 book reproduction. Book reproduction crops out the end members at left and right, most sledging equipment, and the mountain backdrop. Do not describe this crop as showing the entire party or Mount Erebus.",
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          "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
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        "reuse_notice": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "26.1.1911",
        "object_date_text": "26.1.1911",
        "sort_start_year": 1911,
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      "summary": "Individually cataloged hydrometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4231.",
      "claim": null,
      "topics": [
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      "title": "J.I. Moore with sledge and team on sea ice in Square Bay in front of 60ft berg, 14 December 1936",
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "limitations": null
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
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          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
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          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Cataloged expedition photograph: Moore stands on the deck of the sailing ship ‘Penola’. He pulls a small tractor which hangs by cables above the deck from a block and tackle.",
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            "date_label": "1936",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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      "record_sha256": "c813aff02eb6c8e5480edc758e4413118df0dd7ff100a2a7225a399d2d1f5245"
    },
    {
      "id": "history:artifact-ddbb4ac9d167",
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      "kind": "historical",
      "title": "Ortelius: Typus Orbis Terrarum",
      "display_title": "Ortelius’s world map — 1570 edition",
      "display_subtitle": "Edition-specific world map, distinct from the 1598 map in this collection.",
      "url": "vault.html#artifact-ddbb4ac9d167",
      "summary": "The 1570 edition of Ortelius’s world map, distinct from the existing 1598 edition. Historical conjectural geography is not evidence of a surveyed Antarctic civilization.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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      "sources": [
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          "title": "Ortelius: Typus Orbis Terrarum",
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        },
        "reuse_notice": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "object_date_text": "1570",
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          "institution": "David Rumsey Map Collection, Stanford University Libraries",
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          "rights": "Current Rumsey terms permit attributed publication subject to conditions; this entry remains source-link only.",
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          "direct_image_url": null,
          "edition_note": "Edition-specific1570 record; do not substitute a later edition image.",
          "provenance": "Lead in user-supplied Claude HIST array; metadata independently checked against primary repositories during prior primary-source audit in this research thread; do not import supplied claims or rights wholesale.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
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            "world-map-traditions"
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            "height": 705,
            "credit": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of www.davidrumsey.com.",
            "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~275224~90048541:-1--Typus-Orbis-Terrarum-",
            "rights": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
            "transform": "Proportional resize only; no content synthesized or reconstructed."
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          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "The 1570 edition of Ortelius’s world map, distinct from the existing 1598 edition. Historical conjectural geography is not evidence of a surveyed Antarctic civilization.",
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          "display_subtitle": "Edition-specific world map, distinct from the 1598 map in this collection.",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "eb0b011ffb5a1aaa07ce205688825041dcc3cd273cffa7397431ae7786c5a478"
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    {
      "id": "history:artifact-dde28ed109ff",
      "legacy_id": "artifact-dde28ed109ff",
      "kind": "historical",
      "title": "MacMurchie first Scotia diary",
      "display_title": "MacMurchie’s first diary of the Scotia expedition",
      "display_subtitle": "Archival document or record.",
      "url": "vault.html#artifact-dde28ed109ff",
      "summary": "First of the museum’s two handwritten expedition diaries.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1902–1904",
        "object_date_text": "1902–1904",
        "sort_start_year": 1902,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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      },
      "provenance": {
        "input": "reader-data.json",
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          "title": "MacMurchie first Scotia diary",
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          "source_url": "https://www.scottishmaritimemuseum.org/collections/its-snowing-again-diaries-from-edwardian-antarctica/",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
            "manuscript",
            "Scotia expedition"
          ],
          "description": "First of the museum’s two handwritten expedition diaries.",
          "notes": "Source distinguishes first and second diaries; precise volume date range pending.",
          "id": "artifact-dde28ed109ff",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "browsing_group": "documents",
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          "kind": "historical",
          "label": "record",
          "summary": "First of the museum’s two handwritten expedition diaries.",
          "display_title": "MacMurchie’s first diary of the Scotia expedition",
          "display_subtitle": "Archival document or record.",
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            "date_label": "1902–1904",
            "sort_year": 1902,
            "sort_month": null,
            "sort_day": null,
            "end_year": 1904,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-de56949d5852",
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      "kind": "historical",
      "title": "Herbert Ponting on Terra Nova",
      "display_title": "Herbert Ponting on Terra Nova",
      "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
      "url": "vault.html#artifact-de56949d5852",
      "summary": "Cataloged expedition photograph: Ponting sits on a capstan on the deck of ship ‘Terra Nova’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
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        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
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          "title": "Herbert Ponting on Terra Nova",
          "date": "1911",
          "institution": "Scott Polar Research Institute, University of Cambridge",
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          "source_url": "https://www.freezeframe.ac.uk/collection/photos-british-antarctic-expedition-1910-13-ponting-collection/p2005-5-1151",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
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          ],
          "description": "Cataloged expedition photograph: Ponting sits on a capstan on the deck of ship ‘Terra Nova’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
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          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "summary": "Cataloged expedition photograph: Ponting sits on a capstan on the deck of ship ‘Terra Nova’.",
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          "display_subtitle": "Archival photograph — British Antarctic Expedition 1910-13 (Ponting Collection).",
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            "date_label": "1911",
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            "sort_month": null,
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "kind": "historical",
      "title": "V.D. Carse on catcher",
      "display_title": "Carse on the deck of a steamship",
      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
      "url": "vault.html#artifact-de918cdd60f9",
      "summary": "Cataloged expedition photograph: Carse stands on the deck of a steam ship.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "object_date_text": "1935",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
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          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "description": "Cataloged expedition photograph: Carse stands on the deck of a steam ship.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
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          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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            "date_precision": "year",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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      "title": "N.A. Gurney and J.I. Moore with Chief (dog)",
      "display_title": "Gurney and Moore with Chief the dog",
      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
      "url": "vault.html#artifact-df54877cf785",
      "summary": "Cataloged expedition photograph: Portrait of Gurney, holding a dog, and Moore on the deck of the sailing ship ‘Penola’.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
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        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "object_date_text": "1935",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "artifact_id": "P51/8/R012",
          "title": "N.A. Gurney and J.I. Moore with Chief (dog)",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Martin, James Hamilton",
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          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r012",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
          "embed_allowed": false,
          "categories": [
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            "British Graham Land Expedition 1934-37",
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          ],
          "description": "Cataloged expedition photograph: Portrait of Gurney, holding a dog, and Moore on the deck of the sailing ship ‘Penola’.",
          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "label": "record",
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      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 3, 70cm x 105 cm.",
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      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 11, 41cm x 74cm.",
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          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3718",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 7 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": "https://data.aad.gov.au/database/mapcat/RGS/Changing_map_Alexander_Charcot_Is_thumb.jpg",
          "official_viewer_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=3718",
          "embed_allowed": false,
          "verification_status": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "scale": "1 : 7 000 000",
          "publisher": "Royal Geographical Society (United Kingdom)",
          "projection": "Not Given",
          "physical_size": "25.5 x 35.3 cm",
          "direct_image_url": "https://data.aad.gov.au/database/mapcat/RGS/Changing_map_Alexander_Charcot_Is_thumb.jpg",
          "visual_status": "primary-image-link-delivery-unverified",
          "visual_note": "Exact preview link supplied by institutional item record; not a high-resolution master. Unknown reproduction rights: link only.",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "verification": "Individual institutional detail record and itemized catalog verified; no scan delivery verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 7 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "How maps of Alexander and Charcot Islands changed, 1821–1960",
          "display_subtitle": "Historical regional or expedition map.",
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            "date_label": "June 1963",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "related_date": {
            "label": "1821–1960",
            "meaning": "period covered by ten map sketches",
            "used_for_default_sort": false
          }
        }
      },
      "record_sha256": "0d185fb5a10e4df21ab9bfebd851bf55f0282adab55b01f9c36a602b5d182066"
    },
    {
      "id": "history:artifact-ea40341aa7cd",
      "legacy_id": "artifact-ea40341aa7cd",
      "kind": "historical",
      "title": "Al-Idrisi world map, MS Pococke 375",
      "display_title": "Al-Idrisi’s world map — a sixteenth-century copy",
      "display_subtitle": "The catalog date belongs to this manuscript copy, not the original medieval work.",
      "url": "vault.html#artifact-ea40341aa7cd",
      "summary": "Orientation is a cartographic convention, not inversion of the physical Earth.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e6453886ece2a6357a7c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Oxford Cabinet labels photograph CC BY-NC 4.0.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1553 copy of medieval work",
        "object_date_text": "1553 copy of medieval work",
        "sort_start_year": 1553,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ea40341aa7cd",
        "input_record_sha256": "f8bd6f391fb3b97232bf6ca3b52d53ada5a1161761d6fffc99b9197604b01870",
        "original_fields": {
          "id": "artifact-ea40341aa7cd",
          "title": "Al-Idrisi world map, MS Pococke 375",
          "creator": "Copyist after al-Idrisi",
          "date": "1553 copy of medieval work",
          "institution": "Bodleian Libraries",
          "source_url": "https://digital.bodleian.ox.ac.uk/objects/ced0d8bd-1019-4af2-9086-e411115f1507/",
          "supplemental_or_image_url": "https://www.cabinet.ox.ac.uk/node/9746",
          "classification": "South-up world map",
          "relevance_and_caution": "Orientation is a cartographic convention, not inversion of the physical Earth.",
          "rights": "Oxford Cabinet labels photograph CC BY-NC 4.0.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Orientation is a cartographic convention, not inversion of the physical Earth.",
          "categories": [
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          ],
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-ea40341aa7cd",
            "title": "Al-Idrisi world map, MS Pococke 375",
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            "direct_image_url": null,
            "visual_status": "verified-official-viewer",
            "embed_allowed": false,
            "rights_status": "Oxford Cabinet labels photograph CC BY-NC 4.0.",
            "visual_type": "institutional digital object viewer",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Object-specific institution viewer fetched; selected-image reproduction license not independently cleared."
          },
          "browsing_scopes": [
            "geographic-world-map",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
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          "label": "record",
          "summary": "Orientation is a cartographic convention, not inversion of the physical Earth.",
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          "display_subtitle": "The catalog date belongs to this manuscript copy, not the original medieval work.",
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            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-ea84a66152b9",
      "legacy_id": "artifact-ea84a66152b9",
      "kind": "historical",
      "title": "A pair of sealskin over shoes reputedly found on Captain R. F. Scott's body",
      "display_title": "Sealskin overshoes reportedly found with Scott",
      "display_subtitle": "The museum’s attribution is qualified: reportedly, not certainly, found with Scott.",
      "url": "vault.html#artifact-ea84a66152b9",
      "summary": "Individually cataloged over shoes associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4171.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:ea84a66152b9b6ccffa6",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1910",
        "object_date_text": "circa 1910",
        "sort_start_year": 1910,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-ea84a66152b9",
        "input_record_sha256": "c3d7108debf0f5b517d6333e311fad55d83c1b76751c884db2dd4dd7d56f08ac",
        "original_fields": {
          "id": "artifact-ea84a66152b9",
          "title": "A pair of sealskin over shoes reputedly found on Captain R. F. Scott's body",
          "date": "circa 1910",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3926",
          "accession": "AAA4171",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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            "Terra Nova expedition"
          ],
          "description": "Individually cataloged over shoes associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4171.",
          "visual_url": "https://collections.rmg.co.uk/media/544/865/e1003.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3926",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "A pair of sealskin over shoes reputedly found on Captain R. F. Scott's body",
          "notes": "",
          "artifact_id": "AAA4171",
          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/544/865/e1003.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
            "error": "HTTP Error 502: Bad Gateway"
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          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged over shoes associated by Royal Museums Greenwich with the Terra Nova expedition; accession AAA4171.",
          "display_title": "Sealskin overshoes reportedly found with Scott",
          "display_subtitle": "The museum’s attribution is qualified: reportedly, not certainly, found with Scott.",
          "chronology": {
            "date_label": "circa 1910",
            "sort_year": 1910,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "5805d375ff53d4ac07e0f67a3a1d9746e43f8efdb7b430a8c61a461826649cb0"
    },
    {
      "id": "history:artifact-eeececa953e9",
      "legacy_id": "artifact-eeececa953e9",
      "kind": "historical",
      "title": "Traverses of Southern and Eastern Coastal Sledge Journeys. A.A.E.",
      "display_title": "Southern and eastern coastal sledge routes — Australasian expedition",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-eeececa953e9",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 19, 67cm x 44cm. Adelie Land.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1913",
        "object_date_text": "1913",
        "sort_start_year": 1913,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-eeececa953e9",
        "input_record_sha256": "b22c457869ce85c4943e14a1c67cdc83ff1bcdbdd3ab6d8c745cb42b301feb6d",
        "original_fields": {
          "id": "artifact-eeececa953e9",
          "artifact_id": "SLNSW AAE map 19",
          "accession": "Australasian Antarctic Expedition records, map 19",
          "title": "Traverses of Southern and Eastern Coastal Sledge Journeys. A.A.E.",
          "date": "1913",
          "creator": "Webb, Eric N.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 19, 67cm x 44cm. Adelie Land.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 19, 67cm x 44cm. Adelie Land.",
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          "display_subtitle": "Historical regional or expedition map.",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
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    {
      "id": "history:artifact-f007a309c772",
      "legacy_id": "artifact-f007a309c772",
      "kind": "historical",
      "title": "Southern Journey Party",
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      "display_subtitle": "Map of the southern route taken during Shackleton’s Nimrod expedition.",
      "url": "vault.html#artifact-f007a309c772",
      "summary": "Nimrod southern-route survey sheet.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/southern-journey-1909-thumb.jpg",
          "caption": "Library of Congress, Geography and Map Division Route and Surveys of the Southern Journey Party, 1908-09 (1909), Royal Geographical Society; Library of Congress copy. Same Geographical Journal1909 published sheet as BL source; DIFFERENT physical copy, LOC stamp retained. Not a scan of the BL-held exemplar. Source & reuse ↗",
          "title": "Southern Journey Party",
          "href": "vault.html#artifact-f007a309c772"
        },
        "reuse_notice": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1909",
        "object_date_text": "1909",
        "sort_start_year": 1909,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f007a309c772",
        "input_record_sha256": "64b7b6e3467458e78e9426d75330cb45e25f9c1b15c5848b2d443d7ba477e6b7",
        "original_fields": {
          "title": "Southern Journey Party",
          "date": "1909",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
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            "historical"
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          "description": "Nimrod southern-route survey sheet.",
          "identifier": "Maps 159",
          "id": "artifact-f007a309c772",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 159",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-f007a309c772",
            "title": "Southern Journey Party",
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            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only. Two separate original sheets appear in the same side-by-side reproduction.",
            "image_region": "left map"
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          "browsing_group": "regional-maps",
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            "height": 1200,
            "credit": "Library of Congress, Geography and Map Division",
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            "transform": "Aspect-preserving thumbnail resize; no reconstruction."
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          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Nimrod southern-route survey sheet.",
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            "date_label": "1909",
            "sort_year": 1909,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "2e63fbf8e192036a849ff6d9ee584e8c33d0aa61ad842ac213f866cc119e10e6"
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    {
      "id": "history:artifact-f15bee6ab1bf",
      "legacy_id": "artifact-f15bee6ab1bf",
      "kind": "historical",
      "title": "Wilkes expedition atlas",
      "display_title": "Maps from the United States Exploring Expedition",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-f15bee6ab1bf",
      "summary": "Original expedition atlas includes an Antarctic continent chart.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:a952297f0c0f5120e267",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-f15bee6ab1bf.gif",
          "caption": "Atlas title-page preview, not a survey sheet. Open the original atlas viewer.",
          "title": "Wilkes expedition atlas",
          "href": "vault.html#artifact-f15bee6ab1bf"
        },
        "reuse_notice": "LOC Geography and Map Division: free use/reuse absent contrary advisory.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1844",
        "object_date_text": "1844",
        "sort_start_year": 1844,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f15bee6ab1bf",
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        "original_fields": {
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          "rights": "LOC Geography and Map Division: free use/reuse absent contrary advisory.",
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          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "reuse-statement-verified",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": true,
            "rights_status": "Institutional record previously verified: free use/reuse or no known restrictions; retain source credit.",
            "visual_type": "archive scan",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Original item image from official og:image metadata; may be thumbnail resolution. Use official viewer for zoom."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
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          "summary": "Original expedition atlas includes an Antarctic continent chart.",
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            "sort_day": null,
            "end_year": null,
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      },
      "record_sha256": "62bf8ff10ad66ecbe03a6727be17c37c1a2573a5be8744542cc74536d5dbe855"
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    {
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      "display_title": "Mawson’s proposed Antarctic terrain — based on information then available",
      "display_subtitle": "Historical inference about Antarctic topography, not a modern terrain survey.",
      "url": "vault.html#artifact-f333e8357a82",
      "summary": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911",
        "object_date_text": "1911",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-f333e8357a82",
          "artifact_id": "AADC map 3692",
          "accession": "AADC map 3692",
          "title": "South Polar Regions with the Antarctic Continent drawn to illustrate the probable topography as deduced from present available data by D. Mawson, D.Sc. B.E.",
          "date": "1911",
          "institution": "Australian Antarctic Data Centre",
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            "expedition-survey"
          ],
          "description": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 40 000 000",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Printed expedition maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
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          "kind": "historical",
          "label": "record",
          "summary": "A separately catalogued expedition or regional map; scale 1 : 40 000 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "display_title": "Mawson’s proposed Antarctic terrain — based on information then available",
          "display_subtitle": "Historical inference about Antarctic topography, not a modern terrain survey.",
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            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "1b7c4755627ddac70da611e61ded74586f4d2ce7f4e218fc56d3cc89af9bd89b"
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    {
      "id": "history:artifact-f3ae75141822",
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      "kind": "historical",
      "title": "Sketch of Danco Land, the Belgica Strait and Palmer Archipelago surveyed by Captain G. Lecointe. 1898",
      "display_title": "Belgica expedition survey of Danco Land and nearby islands",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-f3ae75141822",
      "summary": "A separately catalogued expedition or regional map; scale Not Entered. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1901",
        "object_date_text": "1901",
        "sort_start_year": 1901,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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          "meaning": "Lecointe survey",
          "used_for_default_sort": false
        },
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "artifact_id": "AADC map 3679",
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          "institution": "Australian Antarctic Data Centre",
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          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=37&page=2",
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          ],
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          "visual_url": null,
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          "scale": "Not Entered",
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          "primary_category": "Printed expedition maps",
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          "label": "record",
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            "sort_month": null,
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            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "legacy_id": "artifact-f41813ef2477",
      "kind": "historical",
      "title": "J.I. Moore on Beach 4. (27 ft.)",
      "display_title": "Moore standing on a gravel beach slope",
      "display_subtitle": "The original caption labels the site Beach 4 and includes 27 ft.; that measurement is not interpreted here.",
      "url": "vault.html#artifact-f41813ef2477",
      "summary": "Cataloged expedition photograph: Moore stands on a gravel slope. Mountain behind.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
        "embedded": false,
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        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1936",
        "object_date_text": "1936",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "input_record_sha256": "21f320708b54ab6829f13591709b81a0d123453c7f6a95dbc82381d336d0555d",
        "original_fields": {
          "id": "artifact-f41813ef2477",
          "artifact_id": "P51/8/F432",
          "title": "J.I. Moore on Beach 4. (27 ft.)",
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          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Fleming, William Launcelot Scott",
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          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f432",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-f432",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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          "categories": [
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          "notes": "Original institutional catalog metadata; dates retain catalog precision. One exposure selected per repeated title; variants and crops excluded. Indexed primary catalog metadata is verified, not current image/viewer delivery. Representative Freeze Frame pages/endpoints returned cache misses or503 during this audit. Do not embed.",
          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "summary": "Cataloged expedition photograph: Moore stands on a gravel slope. Mountain behind.",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "id": "history:artifact-f52885e87675",
      "legacy_id": "artifact-f52885e87675",
      "kind": "historical",
      "title": "South Magnetic Polar Party",
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      "display_subtitle": "Map of the separate Nimrod party that traveled toward the magnetic pole.",
      "url": "vault.html#artifact-f52885e87675",
      "summary": "Separate Nimrod magnetic-pole survey sheet.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
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          "title": "South Magnetic Polar Party",
          "href": "vault.html#artifact-f52885e87675"
        },
        "reuse_notice": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1909",
        "object_date_text": "1909",
        "sort_start_year": 1909,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-f52885e87675",
        "input_record_sha256": "895778c5df49e97222c4b96f5b0045249ff4be703c053cd5f317ab4494e2c96e",
        "original_fields": {
          "title": "South Magnetic Polar Party",
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          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
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          "description": "Separate Nimrod magnetic-pole survey sheet.",
          "identifier": "Maps 159",
          "id": "artifact-f52885e87675",
          "verification_date": "2026-10-28",
          "record_type": "individual_artifact",
          "source_type": "holding-institution catalog or institutional exhibition",
          "artifact_id": "Maps 159",
          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-f52885e87675",
            "title": "South Magnetic Polar Party",
            "official_source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only. Two separate original sheets appear in the same side-by-side reproduction.",
            "image_region": "right map"
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
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            "width": 800,
            "height": 1118,
            "credit": "Library of Congress, Geography and Map Division",
            "source_url": "https://www.loc.gov/item/2002624043/",
            "rights": "LOC item Rights & Access: Geography and Map digitized collections free to use and reuse unless Rights Advisory indicates otherwise; no contrary advisory shown.",
            "transform": "Aspect-preserving thumbnail resize; no reconstruction."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Separate Nimrod magnetic-pole survey sheet.",
          "display_title": "Nimrod expedition’s route to the South Magnetic Pole",
          "display_subtitle": "Map of the separate Nimrod party that traveled toward the magnetic pole.",
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            "date_label": "1909",
            "sort_year": 1909,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "display_subtitle": "Archival photograph — British Graham Land Expedition 1934-37.",
      "url": "vault.html#artifact-fa044fbafd9e",
      "summary": "Cataloged expedition photograph: Portrait of Carse, smoking a pipe, sits on the deck of the sailing ship ‘Penola’ leaning on a stack of timber. He is drawing (?) on a board.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "source_id": "source:eb350432eed6f006d6ec",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1935",
        "object_date_text": "1935",
        "sort_start_year": 1935,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fa044fbafd9e",
        "input_record_sha256": "e9b7a33b04b5091c363bc7f35294b8a804c173852e118f6ec0c90bd16cf0d5c5",
        "original_fields": {
          "id": "artifact-fa044fbafd9e",
          "artifact_id": "P51/8/R008",
          "title": "V.D. Carse sitting on the deck of ‘Penola’",
          "date": "1935",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Martin, James Hamilton",
          "source_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
          "official_viewer_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
          "visual_url": "https://www.freezeframe.ac.uk/collection/british-graham-land-expedition-collection/p51-8-r008",
          "direct_image_url": null,
          "visual_status": "institutional-image-record-delivery-unverified",
          "rights": "SPRI rights notice; no reuse license verified. Link to official viewer only.",
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            "British Graham Land Expedition 1934-37",
            "interwar exploration"
          ],
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          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
          "primary_category": "Archival photographs",
          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
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            "date_label": "1935",
            "sort_year": 1935,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      },
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    {
      "id": "history:artifact-fa305a999658",
      "legacy_id": "artifact-fa305a999658",
      "kind": "historical",
      "title": "A.A.E. Sledging traverse. Adelie Land.",
      "display_title": "Adélie Land sledge route — Australasian Antarctic Expedition",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-fa305a999658",
      "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 17, 64cm x 91cm. Nunatak. Commonwealth Bay. Cape Pigeon Rookery.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:4162a9f70f27d685c213",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Item-specific reproduction rights not verified; external institutional link only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1912",
        "object_date_text": "1912",
        "sort_start_year": 1912,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fa305a999658",
        "input_record_sha256": "4235060a08880e63367844ee612f6af6fced7b5acfb420337d83d8c692b142e1",
        "original_fields": {
          "id": "artifact-fa305a999658",
          "artifact_id": "SLNSW AAE map 17",
          "accession": "Australasian Antarctic Expedition records, map 17",
          "title": "A.A.E. Sledging traverse. Adelie Land.",
          "date": "1912",
          "creator": "Stillwell, Frank Leslie.",
          "institution": "State Library of New South Wales",
          "source_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "source_evidence_url": "https://content-lists.sl.nsw.gov.au/tabular-list/collection-maps-taken-australasian-antarctic-expedition-records-1910-1915",
          "rights": "Item-specific reproduction rights not verified; external institutional link only.",
          "categories": [
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            "expedition-survey"
          ],
          "description": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 17, 64cm x 91cm. Nunatak. Commonwealth Bay. Cape Pigeon Rookery.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Inventory item verified; no individual digital scan linked.",
          "notes": "Date transcribed from item inventory; missing dates remain explicitly undated. No new date inferred from collection range.",
          "visual_status": "not-yet-verified",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Manuscript maps and plans",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Inventory item verified; no individual digital scan linked.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Separately numbered original manuscript in the Australasian Antarctic Expedition records; inventory item 17, 64cm x 91cm. Nunatak. Commonwealth Bay. Cape Pigeon Rookery.",
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          "display_subtitle": "Historical regional or expedition map.",
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            "date_label": "1912",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-fb42d228f203",
      "legacy_id": "artifact-fb42d228f203",
      "kind": "historical",
      "title": "Sheet SR 41-42/6 Stinear Nunataks, Mac. Robertson Land, Australian Antarctic Territory",
      "display_title": "Topographic map of Stinear Nunataks, Mac. Robertson Land",
      "display_subtitle": "Antarctic topographic survey sheet; archival sheet codes are retained in the original title.",
      "url": "vault.html#artifact-fb42d228f203",
      "summary": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:30bbba6ac6b664bb6fac",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/aadc-106.jpg",
          "caption": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 106. CC BY 4.0. Historical map reproduction, not evidence for modern hidden-land claims. Not for navigation; missing hazards does not imply safe terrain. Thumbnail resized without reconstruction. Source & reuse ↗",
          "title": "Sheet SR 41-42/6 Stinear Nunataks, Mac. Robertson Land, Australian Antarctic Territory",
          "href": "vault.html#artifact-fb42d228f203"
        },
        "reuse_notice": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "May-1969",
        "object_date_text": "May-1969",
        "sort_start_year": 1969,
        "sort_month": 5,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-fb42d228f203",
        "input_record_sha256": "36422136e9ae0c60958f732cfa8e2218b076c48d843610a795f817d472cfbaef",
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          "artifact_id": "AADC map 106",
          "accession": "AADC map 106",
          "title": "Sheet SR 41-42/6 Stinear Nunataks, Mac. Robertson Land, Australian Antarctic Territory",
          "date": "May-1969",
          "institution": "Australian Antarctic Data Centre",
          "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=106",
          "source_evidence_url": "https://data.aad.gov.au/aadc/mapcat/list_view.cfm?list_id=29",
          "rights": "Map-specific reproduction rights not verified; institutional data license is not assumed to cover all scans.",
          "categories": [
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            "topographic-survey"
          ],
          "description": "A separately catalogued mid-twentieth-century topographic map; scale 1 : 250 000. It records historical cartographic knowledge, not evidence of hidden continents.",
          "visual_url": null,
          "official_viewer_url": null,
          "embed_allowed": false,
          "verification_status": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "scale": "1 : 250 000",
          "visual_status": "verified-cleared-thumbnail",
          "proof_scope": "Evidence of an original historical map or manuscript, not evidence of hidden lands or a non-spherical Earth.",
          "primary_category": "Topographic maps",
          "asset_status": "source-link-only",
          "direct_image_url": null,
          "verification": "Individual artifact metadata verified in institutional itemized catalog; image not yet verified.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "display_image": {
            "src": "thumbs/aadc-106.jpg",
            "width": 848,
            "height": 960,
            "credit": "Commonwealth of Australia, Division of National Mapping; Australian Antarctic Data Centre, map 106. CC BY 4.0.",
            "source_url": "https://data.aad.gov.au/aadc/mapcat/display_map.cfm?map_id=106",
            "rights": "CC BY 4.0 — AADC current conditions explicitly cover maps unless otherwise marked; Commonwealth mapping agency publisher; no contrary notice in item record.",
            "transform": "Aspect-preserving resize only; no crop, reconstruction or AI enhancement."
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            "sort_day": null,
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            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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      "record_sha256": "bc98d3479f35333a5a13a4701a9b7ddf66ea73023305bbd0b854941ab6989a9f"
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    {
      "id": "history:artifact-fc16cba8d222",
      "legacy_id": "artifact-fc16cba8d222",
      "kind": "historical",
      "title": "Icebound Scotia gangway",
      "display_title": "Scotia’s gangway while the ship was frozen in",
      "display_subtitle": "Archival photograph — Scotia expedition.",
      "url": "vault.html#artifact-fc16cba8d222",
      "summary": "Scottish expedition photograph.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Not verified; source link only until reuse terms are checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1903-04-28",
        "object_date_text": "1903-04-28",
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        "sort_month": 4,
        "sort_day": 28,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "title": "Icebound Scotia gangway",
          "date": "1903-04-28",
          "institution": "University of Glasgow",
          "source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
          "rights": "Not verified; source link only until reuse terms are checked.",
          "categories": [
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          ],
          "description": "Scottish expedition photograph.",
          "artifact_id": "C1/545",
          "notes": "Distinct original negative; crops are not counted separately. Date range used where caption gives no specific date.",
          "id": "artifact-fc16cba8d222",
          "verification": "Institutional catalog or institutional illustrated collection checked",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fc16cba8d222",
            "title": "Icebound Scotia gangway",
            "official_source_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "official_viewer_url": "https://www.gla.ac.uk/myglasgow/library/files/special/exhibns/month/apr2004.html",
            "direct_image_url": "https://www.gla.ac.uk/myglasgow/library/files/special/images/exhibitions/month/photoc1/Photo_C0001_0545.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; source link only until reuse terms are checked.",
            "visual_type": "digitized historical photographic negative",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src extracted from holding institution gallery; accession matched. External linking only; reproduction license unverified."
          },
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "Scottish expedition photograph.",
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          "display_subtitle": "Archival photograph — Scotia expedition.",
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            "date_label": "1903-04-28",
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            "end_year": null,
            "date_precision": "day",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      "record_sha256": "0127a83c498d82bd0321f516e90a58da92b74dcf1ed3024549370e2287e1a188"
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      "id": "history:artifact-fc3e03fe8dac",
      "legacy_id": "artifact-fc3e03fe8dac",
      "kind": "historical",
      "title": "Polus Antarcticus",
      "display_title": "South Pole map with uncharted southern land",
      "display_subtitle": "A historical polar chart, not a surveyed outline of Antarctica.",
      "url": "vault.html#artifact-fc3e03fe8dac",
      "summary": "Hondius-derived polar map; center remains uncertain.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:aaa2537e561f51badc0e",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:41e8048f346ab8f6f96c",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "historical related-edition context, NOT exact",
        "asset": {
          "src": "assets/v14/03dfba8a2031-artifact-fc3e03fe8dac-context1657.jpg",
          "title": "Polus Antarcticus — 1657 edition context",
          "caption": "Related edition: Polus Antarcticus in Janssonius’s 1657 atlas, Zentralbibliothek Zürich. Not the British Library c.1690 copy.",
          "credit": "Johannes Janssonius, Het vijfde Deel Des Grooten Atlas, Amsterdam 1657; Zentralbibliothek Zürich, T 13, via e-rara, DOI 10.3931/e-rara-89085.",
          "rights": "Public Domain Mark 1.0 explicitly displayed by e-rara.",
          "source_url": "https://www.e-rara.ch/zuz/content/titleinfo/25535877",
          "rights_url": "https://www.e-rara.ch/zuz/content/titleinfo/25535877",
          "width": 1000,
          "height": 861,
          "fit": "contain",
          "visual_role": "historical related-edition context, NOT exact",
          "sha256": "03dfba8a203101b78763804d7254ba20ec60a40a35779d86e8352c0c8e424802",
          "source_manifest": "image-provenance-v14.json",
          "display_label": "Related source image · not the catalogued artifact",
          "source_limitations": "Different edition and physical copy from target British Library c.1690. Use only as clearly labeled related-edition context, never identify as exact target artifact.",
          "transformations": "Proportional thumbnail resize only, no generated content.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "Public Domain Mark 1.0 explicitly displayed by e-rara.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1690",
        "object_date_text": "circa 1690",
        "sort_start_year": 1690,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
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          "date": "circa 1690",
          "institution": "British Library",
          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
          "categories": [
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          "description": "Hondius-derived polar map; center remains uncertain.",
          "identifier": "Maps * 88710.(2.)",
          "id": "artifact-fc3e03fe8dac",
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          "record_type": "individual_artifact",
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          "verification": "Institutional source checked; uncertainties retained in metadata",
          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fc3e03fe8dac",
            "title": "Polus Antarcticus",
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            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
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          "label": "record",
          "summary": "Hondius-derived polar map; center remains uncertain.",
          "display_title": "South Pole map with uncharted southern land",
          "display_subtitle": "A historical polar chart, not a surveyed outline of Antarctica.",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [],
          "display_image": {
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            "caption": "Related edition: Polus Antarcticus in Janssonius’s 1657 atlas, Zentralbibliothek Zürich. Not the British Library c.1690 copy.",
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            "rights": "Public Domain Mark 1.0 explicitly displayed by e-rara.",
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            "rights_url": "https://www.e-rara.ch/zuz/content/titleinfo/25535877",
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              "source_limitations": "Different edition and physical copy from target British Library c.1690. Use only as clearly labeled related-edition context, never identify as exact target artifact.",
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          ],
          "sources": [
            {
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              "role": "image reproduction provenance; not proof of a linked interpretation"
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          ]
        }
      },
      "record_sha256": "77f2fc246f0b60d9fb3cb0b758fdfe803e20a7657bf94a764497a01824a6f03a"
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      "summary": "Schematic cosmology, not Antarctic evidence.",
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      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
      "sources": [
        {
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        },
        {
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          "role": "image reuse conditions",
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          "title": "Kharīdat al-ʻajāyib world map",
          "caption": "World map in Kharīdat al-ʻajāyib, folios 6b–7a, Library of Congress SM-3. Manuscript date uncertain; catalog records [15--?] and a 1632 note.",
          "credit": "Library of Congress, African and Middle Eastern Division, Arabic manuscript SM-3 (G93 .I17 1500z), World Digital Library.",
          "rights": "LOC item Rights & Access: World Digital Library collection unaware of copyright or other restrictions; free to use and reuse absent such restrictions.",
          "source_url": "https://www.loc.gov/resource/amedscd.2013415532/?sp=26",
          "rights_url": "https://www.loc.gov/item/2013415532/",
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        "reuse_notice": "LOC item Rights & Access: World Digital Library collection unaware of copyright or other restrictions; free to use and reuse absent such restrictions.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "Late 17th century",
        "object_date_text": "Late 17th century",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Late seventeenth century. Century boundary is only a broad ordering key, not a proposed date.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-fcab44b31898",
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          "institution": "Library of Congress",
          "source_url": "https://www.loc.gov/exhibits/world/earth.html#obj104.1",
          "supplemental_or_image_url": "https://www.loc.gov/exhibits/world/images/s104.1.jpg",
          "classification": "Cosmological geography",
          "relevance_and_caution": "Schematic cosmology, not Antarctic evidence.",
          "rights": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
          "verification": "Institutional source inspected via web text/search; full-resolution asset not downloaded.",
          "antarctica_relation": "Contextual visual history; not direct evidence about Antarctica",
          "description": "Schematic cosmology, not Antarctic evidence.",
          "categories": [
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          "asset_status": "source-link-only",
          "visual_source": {
            "id": "artifact-fcab44b31898",
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            "official_viewer_url": "https://www.loc.gov/exhibits/world/earth.html#obj104.1",
            "direct_image_url": "https://www.loc.gov/exhibits/world/images/s104.1.jpg",
            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Not verified; historical age alone is not a confirmed digital-image reuse license.",
            "visual_type": "institutional scan of historical diagram",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact exhibition image link matches institutional source; link-only because selected reproduction rights not independently verified."
          },
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
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          "label": "record",
          "summary": "Schematic cosmology, not Antarctic evidence.",
          "display_image": {
            "src": "assets/v13/2c2f7a594d67-artifact-fcab44b31898-thumb.jpg",
            "title": "Kharīdat al-ʻajāyib world map",
            "caption": "World map in Kharīdat al-ʻajāyib, folios 6b–7a, Library of Congress SM-3. Manuscript date uncertain; catalog records [15--?] and a 1632 note.",
            "credit": "Library of Congress, African and Middle Eastern Division, Arabic manuscript SM-3 (G93 .I17 1500z), World Digital Library.",
            "rights": "LOC item Rights & Access: World Digital Library collection unaware of copyright or other restrictions; free to use and reuse absent such restrictions.",
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            "rights_url": "https://www.loc.gov/item/2013415532/",
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          "supporting_images": [
            {
              "src": "assets/v13/69fe60d59df9-kharidat-catalog.jpg",
              "title": "Kharīdat al-ʻajāyib world map",
              "caption": "Full source page / supporting original. World map in Kharīdat al-ʻajāyib, folios 6b–7a, Library of Congress SM-3. Manuscript date uncertain; catalog records [15--?] and a 1632 note.",
              "credit": "Library of Congress, African and Middle Eastern Division, Arabic manuscript SM-3 (G93 .I17 1500z), World Digital Library.",
              "rights": "LOC item Rights & Access: World Digital Library collection unaware of copyright or other restrictions; free to use and reuse absent such restrictions.",
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          "sources": [
            {
              "url": "https://www.loc.gov/resource/amedscd.2013415532/?sp=26",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/item/2013415532/",
              "role": "image reuse conditions"
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          ],
          "display_title": "Islamic world map centered on Mecca and Medina",
          "display_subtitle": "A cosmological diagram in The Pearl of Wonders, not a navigation chart.",
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            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Late seventeenth century. Century boundary is only a broad ordering key, not a proposed date."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-fcd8151a467e",
      "legacy_id": "artifact-fcd8151a467e",
      "kind": "historical",
      "title": "Bryant & May's Motor Match — Australasian Antarctic Expedition",
      "display_title": "Matchbox from the Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-fcd8151a467e",
      "summary": "Individually cataloged match box associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4228.",
      "claim": null,
      "topics": [
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      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
      },
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      "visual": {
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        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
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      "provenance": {
        "input": "reader-data.json",
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          "title": "Bryant & May's Motor Match — Australasian Antarctic Expedition",
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          "accession": "AAA4228",
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          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3983",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
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          "visual_status": "primary-image-link-delivery-unverified",
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          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
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          "summary": "Individually cataloged match box associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4228.",
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            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
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      "kind": "historical",
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      "url": "vault.html#artifact-fd0a5d6e319b",
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      "topics": [
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      ],
      "assessment": {
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        "scope": "Institutional record documented; does not authenticate interpretations.",
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        "limitations": null
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        "asset": null,
        "reuse_notice": "Unknown; reproduction permission not verified",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1598",
        "object_date_text": "1598",
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        "sort_day": null,
        "date_status": "dated",
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        "editorial_review_date_reported": "2026-10-28",
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "title": "Typus orbis terrarum",
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          "source_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
          "rights": "Unknown; reproduction permission not verified",
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          "description": "Conjectural southern continent.",
          "identifier": "Maps C.2.d.7",
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          "artifact_id": "Maps C.2.d.7",
          "verification": "Institutional source checked; uncertainties retained in metadata",
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            "id": "artifact-fd0a5d6e319b",
            "title": "Typus orbis terrarum",
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            "official_viewer_url": "https://www.bl.uk/stories/blogs/posts/antarctica-a-brief-history-in-maps",
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            "visual_status": "verified-primary-image-link",
            "embed_allowed": false,
            "rights_status": "Unknown; reproduction permission not verified",
            "visual_type": "institutional photograph/scan of historical map",
            "proof_scope": "Visual evidence of the artifact itself, not proof of modern interpretations or hidden-land claims.",
            "verification_note": "Exact image src and caption extracted from British Library article. This is web-resolution, not a high-resolution archival master; link externally only."
          },
          "browsing_scopes": [
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          "browsing_scope_note": "Curatorial navigation label; original categories and source identity retained.",
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "Conjectural southern continent.",
          "display_title": "Ortelius’s world map with an imagined southern continent",
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          "chronology": {
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            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
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      "assessment": {
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        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:be720e56e2530f999834",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:0bcc134db683a058755b",
          "role": "image reuse conditions",
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          "title": "Group in Wardroom of Terra Nova.",
          "caption": "Officers and scientists in the wardroom. Public-domain 1922 book reproduction. Book reproduction crops the sides of the original exposure; two rightmost standing members and peripheral table details are omitted.",
          "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
          "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
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        "reuse_notice": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "artifact_date_text": "12.1910",
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        "review_date_basis": "not recorded",
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          "artifact_id": "P2005/5/76",
          "title": "Group in Wardroom of Terra Nova.",
          "date": "12.1910",
          "institution": "Scott Polar Research Institute, University of Cambridge",
          "creator": "Ponting, Herbert George",
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          "visual_status": "institutional-image-record-delivery-unverified",
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          "verification": "Individual institutional catalog record metadata retrieved via indexed primary source",
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          "asset_status": "source-link-only",
          "proof_scope": "The record establishes artifact provenance, not modern speculative Antarctic claims.",
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          "summary": "Cataloged expedition photograph: Expedition members sit and stand around a table in the wardroom of the ship ‘Terra Nova’. Some write, some read, a few smoke pipes. Mugs, teapots and jugs stand on the table.",
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            "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
            "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
            "source_url": "https://archive.org/details/greatwhitesouthb00pont",
            "rights_url": "https://www.loc.gov/item/23026514/",
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            "height": 568,
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              "title": "Group in Wardroom of Terra Nova.",
              "caption": "Full source page / supporting original. Officers and scientists in the wardroom. Public-domain 1922 book reproduction. Book reproduction crops the sides of the original exposure; two rightmost standing members and peripheral table details are omitted.",
              "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
              "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
              "source_url": "https://archive.org/details/greatwhitesouthb00pont",
              "rights_url": "https://www.loc.gov/item/23026514/",
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          ],
          "sources": [
            {
              "url": "https://archive.org/details/greatwhitesouthb00pont",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/item/23026514/",
              "role": "image reuse conditions"
            }
          ],
          "display_title": "Expedition members in Terra Nova’s wardroom",
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            "sort_day": null,
            "end_year": null,
            "date_precision": "month",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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      "record_sha256": "0bba144a2ea7f6e28f9b9a4124a74f118b273199e98c478cfe661885d6344a5b"
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    {
      "id": "history:artifact-fe0dfcc16e21",
      "legacy_id": "artifact-fe0dfcc16e21",
      "kind": "historical",
      "title": "Deep sea thermometer — Australasian Antarctic Expedition",
      "display_title": "Deep sea thermometer — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-fe0dfcc16e21",
      "summary": "Individually cataloged deep sea thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4230.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
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        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "input_record_sha256": "b5fff9b4f111f10f63b9349148174407f6b62cf018d65396b7866d62fd73081d",
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          "id": "artifact-fe0dfcc16e21",
          "title": "Deep sea thermometer — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3985",
          "accession": "AAA4230",
          "rights": "Reuse not cleared. RMG asks users to contact its image-licensing service; external viewer only.",
          "embed_allowed": false,
          "categories": [
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          ],
          "description": "Individually cataloged deep sea thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4230.",
          "visual_url": null,
          "official_viewer_url": null,
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Deep sea thermometer",
          "notes": "",
          "artifact_id": "AAA4230",
          "asset_status": "source-link-only",
          "visual_status": "catalog-record-only",
          "direct_image_url": null,
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
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          "label": "record",
          "summary": "Individually cataloged deep sea thermometer associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4230.",
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          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "1911-14",
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            "sort_month": null,
            "sort_day": null,
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            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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      "record_sha256": "ab62a1bb0c0266ef484f44a6fa3a3fd517f21f20e6d0066ff010d0db2e1b97ce"
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    {
      "id": "history:artifact-fe945c727f9e",
      "legacy_id": "artifact-fe945c727f9e",
      "kind": "historical",
      "title": "Snow goggles — Australasian Antarctic Expedition",
      "display_title": "Snow goggles — Australasian Antarctic Expedition",
      "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
      "url": "vault.html#artifact-fe945c727f9e",
      "summary": "Individually cataloged snow goggles associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4224.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1911-14",
        "object_date_text": "1911-14",
        "sort_start_year": 1911,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "input_record_sha256": "6771ea173fe793a69477005c46fddb463dbce0a29deb2393d4d7396b3381eb76",
        "original_fields": {
          "id": "artifact-fe945c727f9e",
          "title": "Snow goggles — Australasian Antarctic Expedition",
          "date": "1911-14",
          "institution": "Royal Museums Greenwich, National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3979",
          "accession": "AAA4224",
          "rights": "Institutional image marked DO NOT REPRODUCE. Link to official object viewer only; do not embed.",
          "embed_allowed": false,
          "categories": [
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            "Australasian Antarctic Expedition"
          ],
          "description": "Individually cataloged snow goggles associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4224.",
          "visual_url": "https://collections.rmg.co.uk/media/3/293/302/rv9698.jpg",
          "official_viewer_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-3979",
          "verification": "Individual institutional record fetched; exact image URL extracted where available. Artifact existence does not prove modern speculative interpretations.",
          "original_title": "Snow goggles",
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          "asset_status": "source-link-only",
          "visual_status": "primary-image-link-delivery-unverified",
          "direct_image_url": "https://collections.rmg.co.uk/media/3/293/302/rv9698.jpg",
          "proof_scope": "Evidence of this cataloged artifact, not evidence of modern speculative Antarctic claims.",
          "image_delivery_check": {
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          "primary_category": "Expedition equipment and relics",
          "browsing_group": "objects",
          "browse_topic": "Objects & expedition gear",
          "kind": "historical",
          "label": "record",
          "summary": "Individually cataloged snow goggles associated by Royal Museums Greenwich with the Australasian Antarctic Expedition; accession AAA4224.",
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          "display_subtitle": "Museum-cataloged object associated with an Antarctic expedition.",
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            "date_label": "1911-14",
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            "sort_month": null,
            "sort_day": null,
            "end_year": 1914,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      },
      "record_sha256": "ffc6707832a39423a5e463ec4bfd2a77001fb0795e60ec7ffef94db2cb4c57e7"
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    {
      "id": "history:artifact-feature-byrd-broadcast",
      "legacy_id": "artifact-feature-byrd-broadcast",
      "kind": "historical",
      "title": "Byrd archival broadcast recording",
      "display_title": "Byrd’s archival broadcast audio",
      "display_subtitle": "No recording date or verified transcript has been established in this catalog.",
      "url": "vault.html#artifact-feature-byrd-broadcast",
      "summary": "Listen to the original archive record before quoting a viral clip. No verified transcript or date-specific quotation is supplied here.",
      "claim": null,
      "topics": [
        "Diaries & records"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Recording linked only; no audio or image copied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "Date not established in this catalog",
        "object_date_text": "Date not established in this catalog",
        "sort_start_year": null,
        "sort_month": null,
        "sort_day": null,
        "date_status": "undated",
        "date_note": "Keep with undated records.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-feature-byrd-broadcast",
          "title": "Byrd archival broadcast recording",
          "date": "Date not established in this catalog",
          "institution": "US National Archives recording / Internet Archive",
          "source_url": "https://archive.org/details/gov.archives.arc.95934",
          "categories": [
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          ],
          "description": "Listen to the original archive record before quoting a viral clip. No verified transcript or date-specific quotation is supplied here.",
          "rights": "Recording linked only; no audio or image copied.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "documents",
          "browse_topic": "Diaries & records",
          "kind": "historical",
          "label": "record",
          "summary": "Listen to the original archive record before quoting a viral clip. No verified transcript or date-specific quotation is supplied here.",
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            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "display_title": "Byrd’s archival broadcast audio",
          "display_subtitle": "No recording date or verified transcript has been established in this catalog.",
          "chronology": {
            "date_label": "Date not established in this catalog",
            "sort_year": null,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "unknown",
            "date_status": "undated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Keep with undated records."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": [
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        }
      },
      "record_sha256": "2323dd0ff733ed89959d634655dc7ba8d6a17e8c71052a46be12f3f10023c6d4"
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    {
      "id": "history:artifact-feature-fine1534",
      "legacy_id": "artifact-feature-fine1534",
      "kind": "historical",
      "title": "Oronce Fine world map, 1534",
      "display_title": "Oronce Fine world map, 1534",
      "display_subtitle": "Historical world map.",
      "url": "vault.html#artifact-feature-fine1534",
      "summary": "A historical world map with a conjectural southern continent—not a verified Antarctic survey.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "source_id": "source:14b9f52f82bd04dc65f9",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "oronce-fine-1534.jpg",
          "caption": "Library of Congress / World Digital Library / Actual archival image. Existing cleared LOC reproduction; source credit retained.",
          "title": "Oronce Fine world map, 1534",
          "href": "vault.html#artifact-feature-fine1534"
        },
        "reuse_notice": "Existing cleared LOC reproduction; source credit retained.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1534",
        "object_date_text": "1534",
        "sort_start_year": 1534,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-fine1534",
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        "original_fields": {
          "id": "artifact-feature-fine1534",
          "title": "Oronce Fine world map, 1534",
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          "institution": "Library of Congress / World Digital Library",
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          ],
          "description": "A historical world map with a conjectural southern continent—not a verified Antarctic survey.",
          "rights": "Existing cleared LOC reproduction; source credit retained.",
          "browsing_scopes": [
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            "world-map-traditions"
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          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
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          "browse_topic": "World maps & models",
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          "label": "record",
          "summary": "A historical world map with a conjectural southern continent—not a verified Antarctic survey.",
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            "end_year": null,
            "date_precision": "year",
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            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-feature-gleason1892",
      "legacy_id": "artifact-feature-gleason1892",
      "kind": "historical",
      "title": "Gleason’s New Standard Map of the World",
      "display_title": "Gleason’s New Standard Map of the World",
      "display_subtitle": "Historical representation of a world model.",
      "url": "vault.html#artifact-feature-gleason1892",
      "summary": "An authentic historical flat-Earth advocacy artifact. Its publication is not evidence that its world model is accurate.",
      "claim": null,
      "topics": [
        "World maps & models"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e7bbf217a71b46d53647",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
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        "role": "context_or_documentary_original",
        "asset": {
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          "caption": "Boston Public Library / Norman B. Leventhal Map Center / Actual archival image. No known copyright restrictions reported by the holding institution.",
          "title": "Gleason’s New Standard Map of the World",
          "href": "vault.html#artifact-feature-gleason1892"
        },
        "reuse_notice": "No known copyright restrictions reported by the holding institution.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1892",
        "object_date_text": "1892",
        "sort_start_year": 1892,
        "sort_month": null,
        "sort_day": null,
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        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
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        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-gleason1892",
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        "original_fields": {
          "id": "artifact-feature-gleason1892",
          "title": "Gleason’s New Standard Map of the World",
          "date": "1892",
          "institution": "Boston Public Library / Norman B. Leventhal Map Center",
          "source_url": "https://ark.digitalcommonwealth.org/ark:/50959/7h149v85z",
          "categories": [
            "cosmology"
          ],
          "description": "An authentic historical flat-Earth advocacy artifact. Its publication is not evidence that its world model is accurate.",
          "rights": "No known copyright restrictions reported by the holding institution.",
          "browsing_scopes": [
            "alternative-world-model",
            "world-map-traditions"
          ],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "world-models",
          "browse_topic": "World maps & models",
          "kind": "historical",
          "label": "record",
          "summary": "An authentic historical flat-Earth advocacy artifact. Its publication is not evidence that its world model is accurate.",
          "display_title": "Gleason’s New Standard Map of the World",
          "display_subtitle": "Historical representation of a world model.",
          "chronology": {
            "date_label": "1892",
            "sort_year": 1892,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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      "record_sha256": "66ac7101bd408146fea71286f9c14a73e86a7f0295ffc17bead36ceddbf31cc3"
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    {
      "id": "history:artifact-feature-highjump-aircraft",
      "legacy_id": "artifact-feature-highjump-aircraft",
      "kind": "historical",
      "title": "Aircraft on Antarctic ice — archival film still",
      "display_title": "Operation Highjump aircraft on Antarctic ice — film still",
      "display_subtitle": "Archival expedition photograph.",
      "url": "vault.html#artifact-feature-highjump-aircraft",
      "summary": "A different archival frame showing expedition aircraft. The two frames are not counted as two independent expeditions or corroborations.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c8a27eeac610321109cd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
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          "caption": "US National Archives / Actual archival image. Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "title": "Aircraft on Antarctic ice — archival film still",
          "href": "vault.html#artifact-feature-highjump-aircraft"
        },
        "reuse_notice": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1946–47 expedition",
        "object_date_text": "1946–47 expedition",
        "sort_start_year": 1946,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "expedition interval; exact film-frame date unknown",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-highjump-aircraft",
        "input_record_sha256": "324d08b2a1bc6ad47739dcce7a5e3e141b58d06961e46d9d641d88a448fece80",
        "original_fields": {
          "id": "artifact-feature-highjump-aircraft",
          "title": "Aircraft on Antarctic ice — archival film still",
          "date": "1946–47 expedition",
          "institution": "US National Archives",
          "source_url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
          "categories": [
            "photography"
          ],
          "description": "A different archival frame showing expedition aircraft. The two frames are not counted as two independent expeditions or corroborations.",
          "rights": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "A different archival frame showing expedition aircraft. The two frames are not counted as two independent expeditions or corroborations.",
          "display_title": "Operation Highjump aircraft on Antarctic ice — film still",
          "display_subtitle": "Archival expedition photograph.",
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            "date_label": "1946–47 expedition",
            "sort_year": 1946,
            "sort_month": null,
            "sort_day": null,
            "end_year": 1947,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "expedition interval; exact film-frame date unknown",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      "record_sha256": "592dd376a8e6cd7893662a727a090c568d6bdb9c614d321c5a1fe4d09129f631"
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    {
      "id": "history:artifact-feature-highjump-base",
      "legacy_id": "artifact-feature-highjump-base",
      "kind": "historical",
      "title": "Highjump at Little America IV — archival film still",
      "display_title": "Operation Highjump’s Little America IV base — film still",
      "display_subtitle": "Archival expedition photograph.",
      "url": "vault.html#artifact-feature-highjump-base",
      "summary": "A distinct archival film frame reproduced in NARA’s Highjump feature. It shows a documented expedition base, not evidence of a hidden-base claim.",
      "claim": null,
      "topics": [
        "Expedition photographs"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:c8a27eeac610321109cd",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-base.png",
          "caption": "US National Archives / Actual archival image. Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "title": "Highjump at Little America IV — archival film still",
          "href": "vault.html#artifact-feature-highjump-base"
        },
        "reuse_notice": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1946–47 expedition",
        "object_date_text": "1946–47 expedition",
        "sort_start_year": 1946,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "expedition interval; exact film-frame date unknown",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-feature-highjump-base",
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        "original_fields": {
          "id": "artifact-feature-highjump-base",
          "title": "Highjump at Little America IV — archival film still",
          "date": "1946–47 expedition",
          "institution": "US National Archives",
          "source_url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
          "categories": [
            "photography"
          ],
          "description": "A distinct archival film frame reproduced in NARA’s Highjump feature. It shows a documented expedition base, not evidence of a hidden-base claim.",
          "rights": "Existing cleared US government archival still. Distinct frame, not a crop duplicate.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "photographs",
          "browse_topic": "Expedition photographs",
          "kind": "historical",
          "label": "record",
          "summary": "A distinct archival film frame reproduced in NARA’s Highjump feature. It shows a documented expedition base, not evidence of a hidden-base claim.",
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            "date_label": "1946–47 expedition",
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            "sort_month": null,
            "sort_day": null,
            "end_year": 1947,
            "date_precision": "year-range",
            "date_status": "dated",
            "date_basis": "expedition interval; exact film-frame date unknown",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
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      "record_sha256": "22e3d8797493f5d73117c60683481e69741e61f8bd5fc8a39934934b7c32c788"
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    {
      "id": "history:artifact-feature-ross1847",
      "legacy_id": "artifact-feature-ross1847",
      "kind": "historical",
      "title": "Ross South Polar Chart",
      "display_title": "Ross South Polar Chart",
      "display_subtitle": "Historical regional or expedition map.",
      "url": "vault.html#artifact-feature-ross1847",
      "summary": "Expedition routes and geographic knowledge recorded on a historical southern-polar chart.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:bca640e8657c0d723300",
          "role": "institutional or documentary record",
          "supports_claim_truth": null
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      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "ross-chart-1847.jpg",
          "caption": "UWM Libraries / World Digital Library / Library of Congress / Actual archival image. No known copyright restrictions reported for the linked collection.",
          "title": "Ross South Polar Chart",
          "href": "vault.html#artifact-feature-ross1847"
        },
        "reuse_notice": "No known copyright restrictions reported for the linked collection.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1847",
        "object_date_text": "1847",
        "sort_start_year": 1847,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "artifact-feature-ross1847",
          "title": "Ross South Polar Chart",
          "date": "1847",
          "institution": "UWM Libraries / World Digital Library / Library of Congress",
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          "categories": [
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          ],
          "description": "Expedition routes and geographic knowledge recorded on a historical southern-polar chart.",
          "rights": "No known copyright restrictions reported for the linked collection.",
          "browsing_scopes": [],
          "verification": "Existing featured original merged into the unified collection; source and image preserved. Not a newly discovered artifact.",
          "browsing_group": "regional-maps",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "Expedition routes and geographic knowledge recorded on a historical southern-polar chart.",
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            "date_label": "1847",
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            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
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          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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    {
      "id": "history:artifact-hooker-davis1839",
      "legacy_id": "artifact-hooker-davis1839",
      "kind": "historical",
      "title": "Chart of the South Polar Sea — annotated expedition copy",
      "display_title": "Chart of the South Polar Sea — annotated expedition copy",
      "display_subtitle": "Printed in 1839, with later expedition route annotations.",
      "url": "vault.html#artifact-hooker-davis1839",
      "summary": "The institution catalogs a June 1839 Hydrographic Office chart with later manuscript tracks associated with John Edward Davis and Joseph Dalton Hooker during the Ross expedition. Printing and annotations are different events; this is not a claim that all later tracks were known in 1839.",
      "claim": null,
      "topics": [
        "Polar & expedition maps"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
        {
          "source_id": "source:e822503d8a90c0d43341",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:fd9fba0cbf29fac698e3",
          "role": "image reuse conditions",
          "supports_claim_truth": null
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          "role": "institutional or documentary record",
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        "role": "original annotated historical chart reproduction",
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          "src": "assets/v14/8bbe36e40c03-hooker-davis1839-rumsey.jpg",
          "title": "Chart of the South Polar Sea — Hooker/Davis annotated expedition copy",
          "caption": "The actual annotated expedition copy of the 1839 Chart of the South Polar Sea, from the David Rumsey collection. Manuscript routes and coastal additions were made during the Ross expedition of 1839–43; they are later than the printed chart. Its four physical linen-backed sections and annotations are preserved in this scan.",
          "credit": "Hydrographic Office, London, June 1839; annotated by John Edward Davis for Joseph Dalton Hooker. David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries, 16137.000.",
          "rights": "David Rumsey current policy expressly permits use in print/digital publications by for-profit or nonprofit publishers without charge, with credit. Underlying 1839 map and nineteenth-century annotations is historical public-domain work. General archive license CC BY-NC-SA 3.0 also recorded; relying on the separate express current publication permission, not claiming CC BY 4.0. Stand-alone for-sale facsimile reproduction requires permission. Exact source record exposes Download 1.",
          "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~364749~90132153:Chart-of-the-South-Polar-Sea-",
          "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
          "width": 1200,
          "height": 1200,
          "fit": "contain",
          "visual_role": "original annotated historical chart reproduction",
          "sha256": "8bbe36e40c0389db1b5a1bc1ead2de4e43945a9e3907ff026aac2e06787cc305",
          "source_manifest": "image-provenance-v14.json",
          "display_label": null,
          "source_limitations": null,
          "transformations": "Full scanned frame retained; JPEG conversions proportionally downsized from institution JP 2. No reconstruction or removal of annotations.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "David Rumsey current policy expressly permits use in print/digital publications by for-profit or nonprofit publishers without charge, with credit. Underlying 1839 map and nineteenth-century annotations is historical public-domain work. General archive license CC BY-NC-SA 3.0 also recorded; relying on the separate express current publication permission, not claiming CC BY 4.0. Stand-alone for-sale facsimile reproduction requires permission. Exact source record exposes Download 1.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1839 printed chart; later expedition annotations",
        "object_date_text": "1839 printed chart; later expedition annotations",
        "sort_start_year": 1839,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "printed chart; later annotations undated",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-hooker-davis1839",
        "input_record_sha256": "560b82bca3cf27d87f0e1c772f583512ed3f454aa06c3b5a36a80c3391e715d6",
        "original_fields": {
          "id": "artifact-hooker-davis1839",
          "title": "Chart of the South Polar Sea — annotated expedition copy",
          "date": "1839 printed chart; later expedition annotations",
          "institution": "David Rumsey Historical Map Collection",
          "source_url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~364749~90132153:Chart-of-the-South-Polar-Sea-",
          "artifact_id": "16137.000",
          "description": "The institution catalogs a June 1839 Hydrographic Office chart with later manuscript tracks associated with John Edward Davis and Joseph Dalton Hooker during the Ross expedition. Printing and annotations are different events; this is not a claim that all later tracks were known in 1839.",
          "rights": "Source viewer linked. Current Rumsey publication terms require attribution and item-specific checking; no new image embedded in this update.",
          "rights_url": "https://www.davidrumsey.com/about/copyright-and-permissions",
          "browsing_group": "regional-maps",
          "categories": [
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            "Ross expedition"
          ],
          "embed_allowed": false,
          "asset_status": "source-link-only",
          "verification": "Institutional object/catalog record checked 2026-10-28; no proof of modern speculative claims.",
          "browse_topic": "Polar & expedition maps",
          "kind": "historical",
          "label": "record",
          "summary": "The institution catalogs a June 1839 Hydrographic Office chart with later manuscript tracks associated with John Edward Davis and Joseph Dalton Hooker during the Ross expedition. Printing and annotations are different events; this is not a claim that all later tracks were known in 1839.",
          "display_title": "Chart of the South Polar Sea — annotated expedition copy",
          "display_subtitle": "Printed in 1839, with later expedition route annotations.",
          "chronology": {
            "date_label": "1839 printed chart; later expedition annotations",
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            "sort_day": null,
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          "display_image": {
            "src": "assets/v14/8bbe36e40c03-hooker-davis1839-rumsey.jpg",
            "title": "Chart of the South Polar Sea — Hooker/Davis annotated expedition copy",
            "caption": "The actual annotated expedition copy of the 1839 Chart of the South Polar Sea, from the David Rumsey collection. Manuscript routes and coastal additions were made during the Ross expedition of 1839–43; they are later than the printed chart. Its four physical linen-backed sections and annotations are preserved in this scan.",
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            "height": 1200,
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            "visual_role": "original annotated historical chart reproduction",
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            "transformations": "Full scanned frame retained; JPEG conversions proportionally downsized from institution JP 2. No reconstruction or removal of annotations.",
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            "counts_as_exact_source_coverage": null
          },
          "supporting_images": [
            {
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              "display_label": null,
              "source_limitations": null,
              "transformations": "Full scanned frame retained; JPEG conversions proportionally downsized from institution JP 2. No reconstruction or removal of annotations.",
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              "counts_as_exact_source_coverage": null
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          ],
          "sources": [
            {
              "url": "https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~364749~90132153:Chart-of-the-South-Polar-Sea-",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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            {
              "url": "https://www.davidrumsey.com/about/copyright-and-permissions",
              "role": "image reuse conditions"
            }
          ]
        }
      },
      "record_sha256": "bd508da9382be3f17408467107137b1d566f7d1b0c45b9ddcb86263d33f5983a"
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      "legacy_id": "artifact-mercator-1569",
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      "title": "Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata",
      "display_title": "Mercator’s world map for navigation",
      "display_subtitle": "Basel’s complete-map composite; the southern continent is conjectural.",
      "url": "vault.html#artifact-mercator-1569",
      "summary": "Mercator’s 1569 world map in the Basel holding, shown as the institution’s complete-map composite. Its southern continent is conjectural, not a verified survey of ice-free Antarctica.",
      "claim": null,
      "topics": [
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      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
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          "caption": "Gerhard Mercator (1569), Universitätsbibliothek Basel, UBH Kartenslg AA 3-5, https://doi.org/10.3931/e-rara-25290 / Public Domain Mark. Actual institutional image reproduction; not proof of later interpretations. Source & reuse ↗",
          "title": "Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata",
          "href": "vault.html#artifact-mercator-1569"
        },
        "reuse_notice": "Public Domain Mark 1.0",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "1569",
        "object_date_text": "1569",
        "sort_start_year": 1569,
        "sort_month": null,
        "sort_day": null,
        "date_status": "dated",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-mercator-1569",
        "input_record_sha256": "3665709dedd8ecb5c20afa0d23203619c8f5e6af50df09c0db853daa859e0f4c",
        "original_fields": {
          "id": "artifact-mercator-1569",
          "title": "Nova et aucta orbis terrae descriptio ad usum navigantium emendate accomodata",
          "date": "1569",
          "source_url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
          "institution": "Universitätsbibliothek Basel",
          "rights": "Public Domain Mark 1.0",
          "rights_url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
          "credit": "Gerhard Mercator (1569), Universitätsbibliothek Basel, UBH Kartenslg AA 3-5, https://doi.org/10.3931/e-rara-25290 / Public Domain Mark.",
          "accession": "UBH Kartenslg AA 3-5",
          "notes": "Institution’s complete-map composite canvas [4], not a reconstructed coastline. Southern land is conjectural. Institution requests citation and notification of published digital offering; no notification sent.",
          "description": "Mercator’s 1569 world map in the Basel holding, shown as the institution’s complete-map composite. Its southern continent is conjectural, not a verified survey of ice-free Antarctica.",
          "categories": [
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          ],
          "browsing_group": "world-maps",
          "browse_topic": "World maps & models",
          "browsing_scopes": [
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          "verification": "Institutional catalog and Public Domain Mark checked; not evidence of speculative geographic interpretations.",
          "display_image": {
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            "width": 960,
            "height": 611,
            "credit": "Gerhard Mercator (1569), Universitätsbibliothek Basel, UBH Kartenslg AA 3-5, https://doi.org/10.3931/e-rara-25290 / Public Domain Mark.",
            "source_url": "https://www.e-rara.ch/bau_1/content/titleinfo/7955225",
            "rights": "Public Domain Mark 1.0",
            "transform": "Resize only; original aspect ratio preserved; no AI generation, crop or content alteration."
          },
          "visual_status": "verified-cleared-thumbnail",
          "kind": "historical",
          "label": "record",
          "summary": "Mercator’s 1569 world map in the Basel holding, shown as the institution’s complete-map composite. Its southern continent is conjectural, not a verified survey of ice-free Antarctica.",
          "display_title": "Mercator’s world map for navigation",
          "display_subtitle": "Basel’s complete-map composite; the southern continent is conjectural.",
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            "date_label": "1569",
            "sort_year": 1569,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "dated",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
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        }
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      "record_sha256": "06e86fb17e724e6fa5e26f31db98b4c0887b7be5337a2dddb7ab1feb1ac96ec6"
    },
    {
      "id": "history:artifact-zba1610-compass",
      "legacy_id": "artifact-zba1610-compass",
      "kind": "historical",
      "title": "Boat compass and binnacle — Shackleton expedition",
      "display_title": "Shackleton expedition lifeboat compass and its housing",
      "display_subtitle": "The museum says this may be the James Caird compass; identification is not certain.",
      "url": "vault.html#artifact-zba1610-compass",
      "summary": "A liquid lifeboat compass taken on Shackleton’s Trans-Antarctic expedition. The museum says it was possibly the one carried in the James Caird to South Georgia—not a certain identification.",
      "claim": null,
      "topics": [
        "Objects & expedition gear"
      ],
      "assessment": {
        "label": "record",
        "scope": "Institutional record documented; does not authenticate interpretations.",
        "text": null,
        "limitations": null
      },
      "sources": [
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          "role": "institutional or documentary record",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": "Institutional images include a do-not-reproduce notice; external object record only. No image copied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": "circa 1914",
        "object_date_text": "circa 1914",
        "sort_start_year": 1914,
        "sort_month": null,
        "sort_day": null,
        "date_status": "approximate",
        "date_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates.",
        "date_basis": "catalog date of this artifact",
        "related_date": null,
        "editorial_review_date_reported": null,
        "review_date_basis": "not recorded",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "vault.html#artifact-zba1610-compass",
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        "original_fields": {
          "id": "artifact-zba1610-compass",
          "title": "Boat compass and binnacle — Shackleton expedition",
          "date": "circa 1914",
          "institution": "Royal Museums Greenwich / National Maritime Museum",
          "source_url": "https://www.rmg.co.uk/collections/objects/rmgc-object-212310",
          "artifact_id": "ZBA1610",
          "description": "A liquid lifeboat compass taken on Shackleton’s Trans-Antarctic expedition. The museum says it was possibly the one carried in the James Caird to South Georgia—not a certain identification.",
          "rights": "Institutional images include a do-not-reproduce notice; external object record only. No image copied.",
          "browsing_group": "objects",
          "categories": [
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            "Shackleton expedition"
          ],
          "embed_allowed": false,
          "asset_status": "source-link-only",
          "verification": "Institutional object/catalog record checked 2026-10-28; no proof of modern speculative claims.",
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          "label": "record",
          "summary": "A liquid lifeboat compass taken on Shackleton’s Trans-Antarctic expedition. The museum says it was possibly the one carried in the James Caird to South Georgia—not a certain identification.",
          "display_title": "Shackleton expedition lifeboat compass and its housing",
          "display_subtitle": "The museum says this may be the James Caird compass; identification is not certain.",
          "chronology": {
            "date_label": "circa 1914",
            "sort_year": 1914,
            "sort_month": null,
            "sort_day": null,
            "end_year": null,
            "date_precision": "year",
            "date_status": "approximate",
            "date_basis": "catalog date of this artifact",
            "sort_year_kind": "cataloged year or lower boundary of stated interval",
            "sort_note": "Sorting aid only; retain the full date label and do not display artificial January 1 dates."
          },
          "display_label_kind": "editorial English topic label; not asserted as a literal translation",
          "display_label_review_flags": []
        }
      },
      "record_sha256": "d07b629bac177a0f997dbf590fb711094fddc68402db8102bd66bb249db0d671"
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    {
      "id": "theory:ADD-A001",
      "legacy_id": "ADD-A001",
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      "title": "Berserk loss blamed on New Zealand naval conspiracy",
      "display_title": "Berserk loss blamed on New Zealand naval conspiracy",
      "display_subtitle": null,
      "url": "theory-vault.html#ADD-A001",
      "summary": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
      "claim": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Reporting records the accusation, not proof of deliberate sinking. The yacht disappeared during severe Antarctic weather.",
        "limitations": [
          "Published interview reporting; primary accusation is attributed to Andhøy."
        ]
      },
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          "source_id": "source:9b54ff314cab082edcbe",
          "role": "claim provenance and/or documented assessment",
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        },
        {
          "source_id": "source:321d35b500c88056fe8f",
          "role": "image reproduction provenance; not proof of a linked interpretation",
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        },
        {
          "source_id": "source:14ef3a80957c8951c39d",
          "role": "image reuse conditions",
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        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic yacht and crew photograph; not evidence of alleged deliberate sinking",
        "asset": {
          "src": "assets/v14/217f14953a18-berserk-nzdf-2011.jpg",
          "title": "Berserk and crew photographed by HMNZS Wellington personnel in 2011",
          "caption": "Berserk and its crew photographed during the HMNZS Wellington encounter in Antarctic waters in February 2011, released by the New Zealand Defence Force. The photograph documents the yacht and crew, not an attack or deliberate sinking.",
          "credit": "New Zealand Defence Force / HMNZS Wellington, 2011. Crown copyright; Creative Commons Attribution (BY), version unspecified in NZDF policy. Extracted and proportionally resized from OIA-2023-4813.",
          "rights": "Crown copyright / New Zealand Defence Force. NZDF Visual Identity Standards printed page 18 (PDF 19), also Navy page 34, explicitly allows distribution, alteration and commercial reuse of NZDF-owned official photography with NZDF credit under Creative Commons Attribution (BY), with CC+ protocol. Version not specified; do not invent a version or claim public domain. No separate third-party credit in supplied image.",
          "source_url": "https://www.nzdf.mil.nz/assets/Uploads/DocumentLibrary/OIA-2023-4813_Berserk-expedition.pdf",
          "rights_url": "https://www.nzdf.mil.nz/assets/Uploads/DocumentLibrary/OIA-2023-4776-Visual-Identity-Standards.pdf",
          "width": 1600,
          "height": 1069,
          "fit": "contain",
          "visual_role": "authentic yacht and crew photograph; not evidence of alleged deliberate sinking",
          "sha256": "217f14953a184cb1b9f3fa5779d8aa45c22720634b90f862b33c887a7289c473",
          "source_manifest": "image-provenance-v14.json",
          "display_label": null,
          "source_limitations": "Use as authentic subject context only. Do not imply NZDF endorsement, establish the cause of the loss from this image, or identify individual crew without separate verification. Full image retained, no synthetic content. NZDF account dates the encounter 21 February 2011; image has no independent EXIF date in this PDF.",
          "transformations": "Embedded official photograph extracted from PDF; proportional resize and JPEG encoding only.",
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          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "Crown copyright / New Zealand Defence Force. NZDF Visual Identity Standards printed page 18 (PDF 19), also Navy page 34, explicitly allows distribution, alteration and commercial reuse of NZDF-owned official photography with NZDF credit under Creative Commons Attribution (BY), with CC+ protocol. Version not specified; do not invent a version or claim public domain. No separate third-party credit in supplied image.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
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        "sort_month": null,
        "sort_day": null,
        "date_status": null,
        "date_note": null,
        "date_basis": null,
        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#ADD-A001",
        "input_record_sha256": "0314f06556b130c163c1a2ffdbdd7c75cf14100bb6567558ae67d10008f43872",
        "original_fields": {
          "id": "ADD-A001",
          "title": "Berserk loss blamed on New Zealand naval conspiracy",
          "claim": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
          "category": "expedition controversy",
          "status": "Unsubstantiated allegation",
          "counterevidence": "Reporting records the accusation, not proof of deliberate sinking. The yacht disappeared during severe Antarctic weather.",
          "sources": [
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              "role": "claim provenance and/or documented assessment"
            },
            {
              "url": "https://www.nzdf.mil.nz/assets/Uploads/DocumentLibrary/OIA-2023-4813_Berserk-expedition.pdf",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.nzdf.mil.nz/assets/Uploads/DocumentLibrary/OIA-2023-4776-Visual-Identity-Standards.pdf",
              "role": "image reuse conditions"
            }
          ],
          "limitations": [
            "Published interview reporting; primary accusation is attributed to Andhøy."
          ],
          "claim_family": "Berserk loss",
          "verification_date": "2026-10-28",
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Jarleg Andhøy alleged New Zealand naval actions contributed to the loss of the yacht Berserk.",
          "display_image": {
            "src": "assets/v14/217f14953a18-berserk-nzdf-2011.jpg",
            "title": "Berserk and crew photographed by HMNZS Wellington personnel in 2011",
            "caption": "Berserk and its crew photographed during the HMNZS Wellington encounter in Antarctic waters in February 2011, released by the New Zealand Defence Force. The photograph documents the yacht and crew, not an attack or deliberate sinking.",
            "credit": "New Zealand Defence Force / HMNZS Wellington, 2011. Crown copyright; Creative Commons Attribution (BY), version unspecified in NZDF policy. Extracted and proportionally resized from OIA-2023-4813.",
            "rights": "Crown copyright / New Zealand Defence Force. NZDF Visual Identity Standards printed page 18 (PDF 19), also Navy page 34, explicitly allows distribution, alteration and commercial reuse of NZDF-owned official photography with NZDF credit under Creative Commons Attribution (BY), with CC+ protocol. Version not specified; do not invent a version or claim public domain. No separate third-party credit in supplied image.",
            "source_url": "https://www.nzdf.mil.nz/assets/Uploads/DocumentLibrary/OIA-2023-4813_Berserk-expedition.pdf",
            "rights_url": "https://www.nzdf.mil.nz/assets/Uploads/DocumentLibrary/OIA-2023-4776-Visual-Identity-Standards.pdf",
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            "height": 1069,
            "fit": "contain",
            "visual_role": "authentic yacht and crew photograph; not evidence of alleged deliberate sinking",
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            "source_manifest": "image-provenance-v14.json",
            "display_label": null,
            "source_limitations": "Use as authentic subject context only. Do not imply NZDF endorsement, establish the cause of the loss from this image, or identify individual crew without separate verification. Full image retained, no synthetic content. NZDF account dates the encounter 21 February 2011; image has no independent EXIF date in this PDF.",
            "transformations": "Embedded official photograph extracted from PDF; proportional resize and JPEG encoding only.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
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      "record_sha256": "222409386183ed32fadaeb1421c7dde86028a33fb26bbf83046c2c199aefa7c1"
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    {
      "id": "theory:ADD-A002",
      "legacy_id": "ADD-A002",
      "kind": "theory",
      "title": "Mawson survival cannibalism allegation",
      "display_title": "Mawson survival cannibalism allegation",
      "display_subtitle": null,
      "url": "theory-vault.html#ADD-A002",
      "summary": "Rumours alleged Douglas Mawson survived by eating his dead companion Xavier Mertz.",
      "claim": "Rumours alleged Douglas Mawson survived by eating his dead companion Xavier Mertz.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Mawson denied the allegation; the NFSA account says a modern recreation makes survival without cannibalism more plausible but cannot settle every circumstance.",
        "limitations": [
          "Historical allegation, not an established account of conduct."
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      "sources": [
        {
          "source_id": "source:46a875a8526244ab1447",
          "role": "claim provenance and/or documented assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ddbf93338b67e25f7bc8",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:335d34723d92f7767e97",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic historical document or exact explanatory source; not proof of disputed claim",
        "asset": {
          "src": "assets/v14/00104baa8972-mertz-1915.jpg",
          "title": "Xavier Mertz portrait published in 1915",
          "caption": "Xavier Mertz, circa 1911, in a portrait reproduced in Mawson’s 1915 expedition account. Documentary identification only: this portrait does not establish a cause of death, a clinical diagnosis, or the cannibalism allegation.",
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          "South Georgia is sub-Antarctic, included for its direct connection to the Endurance expedition."
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      "summary": "Paranormal accounts describe unexplained presences and sensations at the Cape Evans expedition hut.",
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          "Paranormal-site provenance; witness reports are not independently authenticated."
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          "caption": "Ponting’s geologists’ cubicle at Cape Evans, 1911, reproduced in the 1922 book. Authentic interior context for later haunting reports; no paranormal event is pictured. Book reproduction crops peripheral hut details.",
          "credit": "Herbert G. Ponting, The Great White South, 1922 New York edition; Wellesley College Library scan via Internet Archive.",
          "rights": "Public-domain 1922 book reproduction. LOC edition record confirms the work is public domain/free reuse; actual scan supplied by Wellesley College Library via Internet Archive, not LOC or SPRI.",
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      "summary": "An online Antarctic ghost account describes hearing or seeing dogs near the station and Discovery Hut.",
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The post provides no independently testable evidence of animal spirits.",
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      "summary": "Online interpretations attributed the sharp geometry of a 2018 iceberg image to artificial or alien cutting.",
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        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The photographed object is a tabular iceberg; sharp fracture edges need not be artificial.",
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          "title": "Rectangular iceberg cut by aliens",
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              "url": "https://www.nasa.gov/image-article/two-rectangular-icebergs-spotted-nasa-icebridge-flight/",
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              "title": "NASA IceBridge photograph of the widely shared rectangular iceberg, 16 October 2018. A real tabular iceberg, not an artificial structure.",
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              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
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              "title": "A second IceBridge view shows two angular tabular icebergs on 16 October 2018. Supporting photographic context for natural iceberg geometry.",
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              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
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      "title": "Leviathan’s Gate cargo route",
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      "summary": "A 2025 conspiracy post alleged cargo vessels pass a hidden Antarctic ice-wall gate near the McDonald Islands.",
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      "topics": [
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A social-media reading of vessel maps does not demonstrate a passage to outer lands. Heard and McDonald Islands are real sub-Antarctic islands.",
        "limitations": [
          "Related to existing outer-lands mythology but distinct alleged cargo-route proposition; sub-Antarctic location."
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        "role": "authentic photograph of treaty pages; historical documentary context",
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          "title": "1959 Antarctic Treaty document displayed in Hobart",
          "caption": "Antarctic Treaty title and signature pages displayed at the Tasmanian Museum and Art Gallery, photographed in 2011. Historical documentary context only: this image does not show a 2022 territorial allocation or treaty breach, nor does it establish the environmental protocol’s review rules.",
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      "title": "Shackleton’s hazardous-journey recruitment advertisement",
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      "summary": "A famous short advertisement is attributed to Shackleton’s expedition recruiting.",
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        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Archival searches have not located an original newspaper advertisement; modern reproductions do not prove publication.",
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          "title": "Shackleton recruitment advertisement: expedition context",
          "caption": "Endurance in the ice, 1915, photographed by Frank Hurley. Authentic expedition context only: this photograph shows neither a fourth companion nor the alleged recruitment advertisement.",
          "credit": "Frank Hurley, Endurance in the ice, 1915. National Maritime Museum, Henley Collection, P 00011; via institution Flickr Commons/Wikimedia Commons. No known copyright restrictions.",
          "rights": "National Maritime Museum Flickr Commons release: No known copyright restrictions, preserved by Commons review dated 7 Nov 2010. This is an institutional rights assessment, not CC 0 or a warranty. Current original Flickr page could not be fetched; mirror and historic review verified.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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            "rights": "National Maritime Museum Flickr Commons release: No known copyright restrictions, preserved by Commons review dated 7 Nov 2010. This is an institutional rights assessment, not CC 0 or a warranty. Current original Flickr page could not be fetched; mirror and historic review verified.",
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      "summary": "The popular explanation holds that low-temperature tin transformation caused fuel leaks during Scott’s polar journey.",
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        "text": "A National Museum of Australia conservator reported contrary artifact observations and discussed faulty soldering instead.",
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      "summary": "Astral-projection discussions describe an alleged barrier preventing psychic access to Antarctica.",
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      "summary": "A spiritual text places the first of twelve metaphysical pyramids over Antarctica as an interplanetary grid portal.",
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          "claim": "A spiritual text places the first of twelve metaphysical pyramids over Antarctica as an interplanetary grid portal.",
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      "summary": "Stories attributed to Yuri Korshunov describe shape-changing luminous entities killing Soviet expedition members in 1959, with later recurrence.",
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        "text": "The retelling does not authenticate expedition rosters, deaths or physical evidence; real plasma phenomena do not verify organisms.",
        "limitations": [
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            {
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      "summary": "Michael J. Oard argues that Antarctic ice-sheet formation can fit a young-Earth, post-Flood chronology.",
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          "title": "Antarctic ice sheets formed within 4,500 years",
          "claim": "Michael J. Oard argues that Antarctic ice-sheet formation can fit a young-Earth, post-Flood chronology.",
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          "counterevidence": "EPICA ice-core research reconstructs hundreds of thousands of years, incompatible with this proposed recent formation timescale.",
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              "url": "https://www.icr.org/i/pdf/imp/imp-361.pdf",
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            "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
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              "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
              "source_url": "https://scholars.unh.edu/faculty_pubs/337/",
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      "title": "Lost Byrd photographs show ancient monuments",
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      "url": "theory-vault.html#ADD-C003",
      "summary": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments.",
      "claim": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments.",
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Creator Tim Boucher told France 24 the pictures were generated with DALL-E; the book contained an AI disclaimer.",
        "limitations": [
          "The false evidentiary claim belongs to misleading circulation; do not claim the creator presented authentic photographs. One image-series case, not one record per pictured monument."
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      "sources": [
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      "provenance": {
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          "id": "ADD-C003",
          "title": "Lost Byrd photographs show ancient monuments",
          "claim": "Images circulated as secret expedition photographs supposedly showing Antarctic statues, temples and other ancient monuments.",
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          "status": "AI-generated artwork misrepresented as evidence",
          "counterevidence": "Creator Tim Boucher told France 24 the pictures were generated with DALL-E; the book contained an AI disclaimer.",
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              "url": "https://www.inkl.com/news/are-there-ruins-of-a-lost-civilisation-in-antarctica-no-turns-out-these-images-are-fake",
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      "title": "Frozen unknown creatures discovered in 2024 video",
      "display_title": "Frozen unknown creatures discovered in 2024 video",
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      "url": "theory-vault.html#ADD-C004",
      "summary": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice.",
      "claim": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice.",
      "topics": [
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      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Teyit traced the video to an account identifying its AI production and documented visual artifacts; it is not verified discovery footage.",
        "limitations": [
          "One specific viral video case; the different depicted creatures are not independently counted cryptids."
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      "sources": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "ADD-C004",
          "title": "Frozen unknown creatures discovered in 2024 video",
          "claim": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice.",
          "category": "AI hoax and synthetic media",
          "status": "AI-generated video",
          "counterevidence": "Teyit traced the video to an account identifying its AI production and documented visual artifacts; it is not verified discovery footage.",
          "sources": [
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              "url": "https://teyit.org/analiz/antarktikada-donmus-canlilari-gosteren-video-gercek-mi",
              "role": "claim provenance"
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            {
              "url": "https://www.dogrulukpayi.com/dogruluk-kontrolu/video-antarktika-da-donmus-halde-bulunan-canlilarin-kesfedildigini-mi-gosteriyor",
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          "summary": "A circulating video was presented as showing researchers examining unusual creatures frozen in Antarctic ice."
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      "title": "A 400-foot ship is concealed in Antarctic ice",
      "display_title": "A 400-foot ship is concealed in Antarctic ice",
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      "url": "theory-vault.html#ADD-C005",
      "summary": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship.",
      "claim": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The reporting documents a shape-based interpretation, not an inspected vessel or authenticated wreck discovery. Resemblance in remote imagery alone cannot establish a ship.",
        "limitations": [
          "Preserves the original claim’s approximate size; no coordinate-level geological verification performed. Distinct from the South Georgia crash-track UFO."
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      "sources": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "ADD-C005",
          "title": "A 400-foot ship is concealed in Antarctic ice",
          "claim": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship.",
          "category": "satellite-image interpretation",
          "status": "Unverified visual interpretation",
          "counterevidence": "The reporting documents a shape-based interpretation, not an inspected vessel or authenticated wreck discovery. Resemblance in remote imagery alone cannot establish a ship.",
          "sources": [
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              "url": "https://www.ibtimes.co.uk/google-earth-user-spots-frozen-ship-surface-icy-antarctica-terrain-1681811",
              "role": "claim provenance"
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            {
              "url": "https://www.techtimes.com/articles/251689/20200810/ice-ship-found-near-antarctica-via-google-map-claimed-to-be-a-capsized-boat.htm",
              "role": "assessment or corroborating documentation"
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          "limitations": [
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          "browse_topic": "Images, clips & hoaxes",
          "kind": "theory",
          "label": "unverified",
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          "summary": "MrMBB333 interpreted a ship-shaped feature visible in Google Earth imagery near Antarctica as an approximately 400-foot ice ship."
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      "title": "600-million-year-old tiny humanoid fossils",
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      "url": "theory-vault.html#ADD-D001",
      "summary": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica.",
      "claim": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Snopes found no supporting scientific publication and documented manipulated skeletal imagery and inconsistent institutional details.",
        "limitations": [
          "Provenance is traced through the fact-check to a 2022 Xa Lua News version; this does not establish the absolute first publication."
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "provenance": {
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          "claim": "Viral articles claim miniature humanoid skeletons dating to 600 million years ago were found in Antarctica.",
          "category": "fabricated discovery",
          "status": "Hoax",
          "counterevidence": "Snopes found no supporting scientific publication and documented manipulated skeletal imagery and inconsistent institutional details.",
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              "credit": "Souney et al. (2014), International Glaciological Society; CC BY 3.0 via University of New Hampshire Scholars Repository.",
              "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
              "source_url": "https://scholars.unh.edu/faculty_pubs/337/",
              "rights_url": "https://creativecommons.org/licenses/by/3.0/",
              "width": 641,
              "height": 965,
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              "visual_role": "authentic scientific ice-core photograph; comparative context, not the alleged event",
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            {
              "src": "assets/v13/b393490b3061-wais-core-lab.jpg",
              "title": "WAIS Divide ice-core measurement and archive",
              "caption": "WAIS Divide ice core measured and stored at the National Ice Core Laboratory in the United States. This is the laboratory/archive, not an Antarctic underground settlement; it illustrates how physical samples are handled, not the EPICA core or proof of any speculation.",
              "credit": "Peter Rejcek/NSF, in Souney et al. (2014), International Glaciological Society; CC BY 3.0 via University of New Hampshire Scholars Repository.",
              "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
              "source_url": "https://scholars.unh.edu/faculty_pubs/337/",
              "rights_url": "https://creativecommons.org/licenses/by/3.0/",
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              "height": 400,
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      "record_sha256": "4003081e77afe5b2f4a0803a6818ef8f428cb0f1d6956887c436962247874b2b"
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      "summary": "Nazi Germany built a functioning concealed Antarctic stronghold.",
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        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Expedition records and subsequent exploration do not support construction or resupply.",
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          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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      },
      "sources": [
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        },
        {
          "source_id": "source:a0b26288a14f1b2b3b25",
          "role": "Historical background",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c23824a8dd2fd8497b81",
          "role": "Primary institutional context; not proof of the speculative claim",
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
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          "src": "highjump-base.png",
          "caption": "NARA / Known expedition base, not secret-base evidence / Context image—not proof of the broader claim.",
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          "href": "theory-vault.html#HIST-01"
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "HIST-01",
          "title": "Secret Nazi Antarctic base",
          "claim": "Nazi Germany built a functioning concealed Antarctic stronghold.",
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          "status": "Contradicted by historical research",
          "counterevidence": "Expedition records and subsequent exploration do not support construction or resupply.",
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            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
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            {
              "url": "https://www.history.com/articles/hitler-nazi-secret-expedition-antarctica-whale-oil",
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            },
            {
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              "role": "Primary institutional context; not proof of the speculative claim"
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          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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          },
          "research_context": [
            {
              "text": "British Antarctic Survey documents Operation Tabarin as a secret wartime base-building expedition. This historical context does not establish the alleged Nazi-base assault.",
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      "id": "theory:HIST-02",
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      "title": "Hitler escaped to Antarctica",
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      "summary": "Hitler survived Berlin and reached Antarctica by submarine.",
      "claim": "Hitler survived Berlin and reached Antarctica by submarine.",
      "topics": [
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The cited submarine movements do not establish such an Antarctic escape.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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      "sources": [
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        {
          "source_id": "source:f603dac892ba614d1b22",
          "role": "Detailed historiography",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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          "id": "HIST-02",
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          "claim": "Hitler survived Berlin and reached Antarctica by submarine.",
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          "counterevidence": "The cited submarine movements do not establish such an Antarctic escape.",
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              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
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            {
              "url": "https://wikileaks.org/gifiles/attach/49/49783_.pdf",
              "role": "Detailed historiography"
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          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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          "summary": "Hitler survived Berlin and reached Antarctica by submarine."
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      "record_sha256": "93ebbec420bb68a53fde276ae3131286215d8750f69bd512c60736c455c2817c"
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    {
      "id": "theory:HIST-03",
      "legacy_id": "HIST-03",
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      "title": "Hitler ashes and treasure shrine",
      "display_title": "Hitler ashes and treasure shrine",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-03",
      "summary": "Hitler died, but his ashes and treasure were hidden in Antarctic ice.",
      "claim": "Hitler died, but his ashes and treasure were hidden in Antarctic ice.",
      "topics": [
        "Power, access & secrecy"
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The alleged transport narrative lacks corroborated records.",
        "limitations": "Different from the survival claim; do not imply the source endorses it."
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      "sources": [
        {
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          "role": "Records claim attributed to Buechner and Bernhart",
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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          "counterevidence": "The alleged transport narrative lacks corroborated records.",
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              "url": "https://wikileaks.org/gifiles/attach/49/49783_.pdf",
              "role": "Records claim attributed to Buechner and Bernhart"
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          ],
          "limitations": "Different from the survival claim; do not imply the source endorses it.",
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          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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      "record_sha256": "fc3dbd12dc535333b9f60ff66ad10a14ff03839e82e34ff7747b63e1b33f9aed"
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      "id": "theory:HIST-04",
      "legacy_id": "HIST-04",
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      "title": "SAS Antarctic base assault",
      "display_title": "SAS Antarctic base assault",
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      "url": "theory-vault.html#HIST-04",
      "summary": "British special forces attacked the alleged German Antarctic base.",
      "claim": "British special forces attacked the alleged German Antarctic base.",
      "topics": [
        "Power, access & secrecy"
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The relevant SAS personnel had civilian duties; evidence does not support the assault.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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      "sources": [
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          "role": "Peer-reviewed historical investigation",
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          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
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      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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              "role": "Peer-reviewed historical investigation"
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              "url": "https://www.bas.ac.uk/about/history/operation-tabarin/",
              "role": "Primary institutional context; not proof of the speculative claim"
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          ],
          "limitations": [
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          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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      "title": "Highjump was a secret Antarctic battle",
      "display_title": "Highjump was a secret Antarctic battle",
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      "url": "theory-vault.html#HIST-05",
      "summary": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
      "claim": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
      "topics": [
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      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Its documented purpose concerned polar training and research, not this battle.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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      },
      "sources": [
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          "role": "Peer-reviewed historical investigation",
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        {
          "source_id": "source:bfedf29beddf3b7170e2",
          "role": "Review of the conspiracy and investigation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c8a27eeac610321109cd",
          "role": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary.",
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      ],
      "visual": {
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        "role": "context_or_documentary_original",
        "asset": {
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          "caption": "Real Highjump expedition still / US National Archives. It does not document the alleged secret battle.",
          "title": "Highjump was a secret Antarctic battle",
          "href": "theory-vault.html#HIST-05"
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "provenance": {
        "input": "reader-data.json",
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          "id": "HIST-05",
          "title": "Highjump was a secret Antarctic battle",
          "claim": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
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          "status": "Contradicted by historical research",
          "counterevidence": "Its documented purpose concerned polar training and research, not this battle.",
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              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Peer-reviewed historical investigation"
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            {
              "url": "https://www.nature.com/news/2007/070326/full/news070326-14.html",
              "role": "Review of the conspiracy and investigation"
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              "url": "https://unwritten-record.blogs.archives.gov/2017/09/27/operation-hi-jump-exploring-antarctica-with-the-u-s-navy/",
              "role": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary."
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          ],
          "limitations": [
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          "claim_family": "Nazi Antarctica",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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          "summary": "Operation Highjump attacked Nazi forces and was defeated by advanced aircraft.",
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            "items": [
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              "The size of the task force",
              "The early end and casualties"
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            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
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              "title": "A sled dog used for Antarctic transportation during Operation Highjump, in a historical U.S. Navy film still presented by NARA. Expedition context, not evidence of a battle or secret diary.",
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              "rights_url": "https://www.archives.gov/global-pages/privacy.html",
              "role": "Scientific / historical context; not automatic proof of the claim"
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      "record_sha256": "27595bced1d5752fe5358a6b331f96e7bf539f8ff701cbcb9f126ce2df5e026c"
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    {
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      "legacy_id": "HIST-06",
      "kind": "theory",
      "title": "Argus destroyed an Antarctic Nazi base",
      "display_title": "Argus destroyed an Antarctic Nazi base",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-06",
      "summary": "American nuclear tests destroyed the hidden Antarctic base.",
      "claim": "American nuclear tests destroyed the hidden Antarctic base.",
      "topics": [
        "Power, access & secrecy"
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      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Operation Argus detonations occurred far north of the claimed base.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
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          "source_id": "source:19eb5e4040bb8546a318",
          "role": "Peer-reviewed historical investigation",
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        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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          "title": "Argus destroyed an Antarctic Nazi base",
          "claim": "American nuclear tests destroyed the hidden Antarctic base.",
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          "status": "Contradicted by test geography",
          "counterevidence": "Operation Argus detonations occurred far north of the claimed base.",
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            {
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            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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      "title": "Antarctic Nazi flying-saucer industry",
      "display_title": "Antarctic Nazi flying-saucer industry",
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      "summary": "Escaped Nazis manufactured advanced flying saucers beneath Antarctica.",
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The story is documented in extremist UFO literature, not validated engineering records.",
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      "sources": [
        {
          "source_id": "source:12aa8d28ba2fce8f93f5",
          "role": "Documents Ernst Zundel claim lineage",
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          "role": "Historical counterevidence",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "title": "Antarctic Nazi flying-saucer industry",
          "claim": "Escaped Nazis manufactured advanced flying saucers beneath Antarctica.",
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          "status": "No verified evidence",
          "counterevidence": "The story is documented in extremist UFO literature, not validated engineering records.",
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            {
              "url": "https://www.splcenter.org/resources/hatewatch/close-encounters-racist-kind/",
              "role": "Documents Ernst Zundel claim lineage"
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            {
              "url": "https://ui.adsabs.harvard.edu/abs/2007PoRec..43....1S/abstract",
              "role": "Historical counterevidence"
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          ],
          "limitations": "Contextualize neo-Nazi origins without endorsing or aestheticizing them.",
          "claim_family": "Nazi Antarctica",
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          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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    {
      "id": "theory:HIST-08",
      "legacy_id": "HIST-08",
      "kind": "theory",
      "title": "Polar entrance to a habitable hollow Earth",
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      "url": "theory-vault.html#HIST-08",
      "summary": "A southern polar opening leads into an inhabited inner world.",
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      "topics": [
        "Maps & hidden lands"
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        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Modern evidence for Earth structure does not support a hollow inhabited interior.",
        "limitations": "Symmes proposed openings at both poles; his requested expedition was northward."
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      "sources": [
        {
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          "role": "Scholarly history of Symmes theory",
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        },
        {
          "source_id": "source:c392382d1e16285fe57f",
          "role": "Modern Antarctic claim and scientific response",
          "supports_claim_truth": null
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        {
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          "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
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      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
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          "title": "Polar entrance to a habitable hollow Earth",
          "href": "theory-vault.html#HIST-08"
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "input": "reader-data.json",
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          "title": "Polar entrance to a habitable hollow Earth",
          "claim": "A southern polar opening leads into an inhabited inner world.",
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          "status": "Contradicted by geophysics",
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            {
              "url": "https://www.tandfonline.com/doi/abs/10.2747/0272-3646.25.5.382",
              "role": "Scholarly history of Symmes theory"
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            {
              "url": "https://politifact.com/factchecks/2022/jul/26/instagram-posts/fact-checking-hollow-earth-conspiracy-theory/",
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              "url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
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              "Symmes's 1818 circular",
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            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
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              "title": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
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              "rights_url": "https://www.usgs.gov/faqs/are-usgs-reportspublications-copyrighted",
              "role": "Scientific / historical context; not automatic proof of the claim"
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      "kind": "theory",
      "title": "Byrd secret-diary encounter",
      "display_title": "Byrd secret-diary encounter",
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      "url": "theory-vault.html#HIST-09",
      "summary": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
      "claim": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No established archival provenance connects the circulated text to Byrd.",
        "limitations": "Versions concern the North Pole but circulate in Antarctic narratives; do not conflate this with authentic Byrd notebooks."
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      "sources": [
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          "source_id": "source:2f25af4df9b8127bd1c2",
          "role": "Example of claimant circulation",
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          "source_id": "source:2eb7acb851770bf2d856",
          "role": "Provenance and chronology discussion",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:63df944bd2ab12c69eda",
          "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
          "supports_claim_truth": null
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      "visual": {
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        "role": "context_or_documentary_original",
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          "caption": "NARA / Expedition context, not diary evidence / Context image—not proof of the broader claim.",
          "title": "Byrd secret-diary encounter",
          "href": "theory-vault.html#HIST-09"
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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          "id": "HIST-09",
          "title": "Byrd secret-diary encounter",
          "claim": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
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          "status": "Unauthenticated",
          "counterevidence": "No established archival provenance connects the circulated text to Byrd.",
          "sources": [
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              "url": "https://forbiddenknowledgetv.net/post/sensitive/admiral-byrds-diary",
              "role": "Example of claimant circulation"
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            {
              "url": "https://briefglo.com/admiral-byrd-antarctica-hollow-earth/",
              "role": "Provenance and chronology discussion"
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            {
              "url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
              "role": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance."
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          "limitations": "Versions concern the North Pole but circulate in Antarctic narratives; do not conflate this with authentic Byrd notebooks.",
          "claim_family": "Hollow Earth",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
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          "label": "unverified",
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          "summary": "An alleged diary says Byrd encountered an advanced inner-Earth civilization.",
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            "items": [
              "Text circulated as 'The Missing Diary of Admiral Byrd'"
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            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
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              "title": "USGS scientific diagram of Earth’s crust, mantle and core. The inset is not to scale. A scientific illustration, not a photograph of a Hollow Earth entrance.",
              "source_url": "https://www.usgs.gov/media/images/cutaway-views-showing-internal-structure-earth-left",
              "rights_url": "https://www.usgs.gov/faqs/are-usgs-reportspublications-copyrighted",
              "role": "Scientific / historical context; not automatic proof of the claim"
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      "record_sha256": "444ebdd8d12996ddcc56187e5920fa886420a42a7ff65ff195c6578ca49d3958"
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    {
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      "legacy_id": "HIST-10",
      "kind": "theory",
      "title": "Rainbow City",
      "display_title": "Rainbow City",
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      "url": "theory-vault.html#HIST-10",
      "summary": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice.",
      "claim": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "A circulated account is not archaeological corroboration.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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      },
      "sources": [
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          "role": "Primary publication in claimant tradition",
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          "role": "Scholarly history of claim circulation",
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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          "id": "HIST-10",
          "title": "Rainbow City",
          "claim": "The Hefferlins described a technologically advanced city concealed beneath Antarctic ice.",
          "category": "Occult contact narrative",
          "status": "Unverified",
          "counterevidence": "A circulated account is not archaeological corroboration.",
          "sources": [
            {
              "url": "https://borderlandsciences.org/journal/vol/30/n05/Hefferlin_into_Rainbow_City.html",
              "role": "Primary publication in claimant tradition"
            },
            {
              "url": "https://cryptome.org/2013/01/aaron-swartz/Conspiracy-Culture.pdf",
              "role": "Scholarly history of claim circulation"
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          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
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          "claim_family": "Hidden civilizations",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
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    {
      "id": "theory:HIST-11",
      "legacy_id": "HIST-11",
      "kind": "theory",
      "title": "Antarctica was Atlantis",
      "display_title": "Antarctica was Atlantis",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-11",
      "summary": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
      "claim": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
      "topics": [
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      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated Antarctic archaeology establishes that identification.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:ebfac4a62af804ac30c9",
          "role": "Documents proposed location",
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        },
        {
          "source_id": "source:d992d96502ce4265845e",
          "role": "Geological criticism",
          "supports_claim_truth": null
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      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/artifact-c8c2f41b81fd.jpg",
          "caption": "Kircher’s historical Atlantis illustration / Library of Congress. Not a survey of Antarctica or proof Atlantis existed.",
          "title": "Antarctica was Atlantis",
          "href": "theory-vault.html#HIST-11"
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "HIST-11",
          "title": "Antarctica was Atlantis",
          "claim": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
          "category": "Alternative history",
          "status": "Unverified",
          "counterevidence": "No authenticated Antarctic archaeology establishes that identification.",
          "sources": [
            {
              "url": "https://www.history.com/articles/top-6-theories-about-atlantis",
              "role": "Documents proposed location"
            },
            {
              "url": "https://talkorigins.org/faqs/mom/atlantis.html",
              "role": "Geological criticism"
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          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Antarctic Atlantis",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "Plato’s Atlantis is identified with Antarctica beneath its ice.",
          "reference_research_leads": {
            "reference_id": "t-lost-civ",
            "items": [
              "Ancient-map claims",
              "Hapgood's crustal displacement theory",
              "Subglacial lakes"
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            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
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        }
      },
      "record_sha256": "46261c245e439020637bd0247e8d81eb6f93f2eea75f1896f74fdbaf07bd315d"
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    {
      "id": "theory:HIST-12",
      "legacy_id": "HIST-12",
      "kind": "theory",
      "title": "Rapid crust displacement froze inhabited Antarctica",
      "display_title": "Rapid crust displacement froze inhabited Antarctica",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-12",
      "summary": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
      "claim": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
      "topics": [
        "History & lost civilizations"
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Geological and ice-sheet evidence contradicts the proposed recent displacement scenario.",
        "limitations": "Distinct proposed mechanism, not merely another name for Atlantis."
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      "sources": [
        {
          "source_id": "source:4cf3a77e662e9182ee1d",
          "role": "Examination of Hapgood mechanism",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d992d96502ce4265845e",
          "role": "Geological counteranalysis",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
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        "sort_month": null,
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
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      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "HIST-12",
          "title": "Rapid crust displacement froze inhabited Antarctica",
          "claim": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
          "category": "Rejected geological hypothesis",
          "status": "Not accepted geology",
          "counterevidence": "Geological and ice-sheet evidence contradicts the proposed recent displacement scenario.",
          "sources": [
            {
              "url": "https://www.skrause.org/writing/papers/hapgood_and_ecd.shtml",
              "role": "Examination of Hapgood mechanism"
            },
            {
              "url": "https://talkorigins.org/faqs/mom/atlantis.html",
              "role": "Geological counteranalysis"
            }
          ],
          "limitations": "Distinct proposed mechanism, not merely another name for Atlantis.",
          "claim_family": "Antarctic Atlantis",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
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          "kind": "theory",
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          "summary": "Rapid movement of Earth’s crust carried temperate Antarctica into polar conditions in human prehistory.",
          "reference_research_leads": {
            "reference_id": "t-lost-civ",
            "items": [
              "Ancient-map claims",
              "Hapgood's crustal displacement theory",
              "Subglacial lakes"
            ],
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        }
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      "kind": "theory",
      "title": "Ancient sea kings surveyed Antarctica",
      "display_title": "Ancient sea kings surveyed Antarctica",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-13",
      "summary": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
      "claim": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Early-map interpretation does not establish the proposed civilization.",
        "limitations": [
          "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
        ]
      },
      "sources": [
        {
          "source_id": "source:2136ca31b04b865a63a3",
          "role": "Publisher description of Hapgood thesis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:560eed8d41b153d66ddb",
          "role": "Cartographic criticism",
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      ],
      "visual": {
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        "role": "context_or_documentary_original",
        "asset": {
          "src": "gleason-1892-highres.jpg",
          "caption": "Gleason, 1892 / Boston Public Library / Context image—not proof of the broader claim.",
          "title": "Ancient sea kings surveyed Antarctica",
          "href": "theory-vault.html#HIST-13"
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "HIST-13",
          "title": "Ancient sea kings surveyed Antarctica",
          "claim": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
          "category": "Alternative history",
          "status": "Unverified",
          "counterevidence": "Early-map interpretation does not establish the proposed civilization.",
          "sources": [
            {
              "url": "https://books.google.com/books/about/Maps_of_the_Ancient_Sea_Kings.html?id=5iLG2D5eBswC",
              "role": "Publisher description of Hapgood thesis"
            },
            {
              "url": "https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1986/10/22165322/p34.pdf",
              "role": "Cartographic criticism"
            }
          ],
          "limitations": [
            "Documentation establishes historical circulation of the claim, not its truth; see counterevidence and source roles."
          ],
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
          "map_id": "maps",
          "summary": "A forgotten advanced maritime civilization mapped Antarctica before recorded modern exploration.",
          "reference_research_leads": {
            "reference_id": "t-ancient-maps",
            "items": [
              "Piri Reis 1513",
              "Finé 1531",
              "Mercator 1538",
              "Buache 1739"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          }
        }
      },
      "record_sha256": "ea9f7ee81a29c1d9af14c5cefcd104ebcb52498aa2b952a2bcad010978127ccd"
    },
    {
      "id": "theory:HIST-14",
      "legacy_id": "HIST-14",
      "kind": "theory",
      "title": "Extraterrestrials supplied Antarctic map knowledge",
      "display_title": "Extraterrestrials supplied Antarctic map knowledge",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-14",
      "summary": "Alien survey technology explains purported ice-free Antarctica on early maps.",
      "claim": "Alien survey technology explains purported ice-free Antarctica on early maps.",
      "topics": [
        "Aliens & secret technology"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The underlying identification of the mapped coast with Antarctica is disputed.",
        "limitations": "A separate proposed agent from ancient mariners, but same evidentiary family."
      },
      "sources": [
        {
          "source_id": "source:a0b3fdfc89e927ab588d",
          "role": "Documents von Daniken interpretation and criticism",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:fdd25521704347e89f57",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5be3f45044c71052b2c7",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "replica photograph of the map discussed",
        "asset": {
          "src": "assets/v13/5b11f82d65a4-piri-reis-1513-replica-yair-haklai-2023.jpg",
          "title": "Extraterrestrials supplied Antarctic map knowledge",
          "caption": "Piri Reis 1513 museum-display REPLICA, photographed 2023. It illustrates the map invoked by the ancient-astronaut claim, not extraterrestrial surveying or the original parchment.",
          "credit": "Yair Haklai, 16 April 2023, Wikimedia Commons, CC BY-SA 4.0. Proportionally resized; otherwise unchanged.",
          "rights": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
          "source_url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
          "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
          "width": 1200,
          "height": 550,
          "fit": "contain",
          "visual_role": "replica photograph of the map discussed",
          "sha256": "5b11f82d65a451b4da9f4d7e1f9bfb36efc290f7a4799f0ae54052bc3a3414dc",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "object_date_text": null,
        "sort_start_year": null,
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        "sort_day": null,
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-14",
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        "original_fields": {
          "id": "HIST-14",
          "title": "Extraterrestrials supplied Antarctic map knowledge",
          "claim": "Alien survey technology explains purported ice-free Antarctica on early maps.",
          "category": "Ancient astronaut claim",
          "status": "Unverified",
          "counterevidence": "The underlying identification of the mapped coast with Antarctica is disputed.",
          "sources": [
            {
              "url": "https://www.badarchaeology.com/old-maps/the-piri-reis-map/",
              "role": "Documents von Daniken interpretation and criticism"
            },
            {
              "url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://creativecommons.org/licenses/by-sa/4.0/",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "A separate proposed agent from ancient mariners, but same evidentiary family.",
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "speculative",
          "map_id": null,
          "summary": "Alien survey technology explains purported ice-free Antarctica on early maps.",
          "display_image": {
            "src": "assets/v13/5b11f82d65a4-piri-reis-1513-replica-yair-haklai-2023.jpg",
            "title": "Extraterrestrials supplied Antarctic map knowledge",
            "caption": "Piri Reis 1513 museum-display REPLICA, photographed 2023. It illustrates the map invoked by the ancient-astronaut claim, not extraterrestrial surveying or the original parchment.",
            "credit": "Yair Haklai, 16 April 2023, Wikimedia Commons, CC BY-SA 4.0. Proportionally resized; otherwise unchanged.",
            "rights": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
            "source_url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
            "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
            "width": 1200,
            "height": 550,
            "fit": "contain",
            "visual_role": "replica photograph of the map discussed",
            "sha256": "5b11f82d65a451b4da9f4d7e1f9bfb36efc290f7a4799f0ae54052bc3a3414dc",
            "source_manifest": "image-provenance-v13.json"
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      "record_sha256": "22a75c19d8b06bc7ce321b5652af0e4f55c10f609552783f1cabf5405655cb75"
    },
    {
      "id": "theory:HIST-15",
      "legacy_id": "HIST-15",
      "kind": "theory",
      "title": "Piri Reis depicts an ice-free Antarctic coast",
      "display_title": "Piri Reis depicts an ice-free Antarctic coast",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-15",
      "summary": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
      "claim": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Cartographic criticism finds no demonstrated accurate Antarctic survey.",
        "limitations": "Map existence is genuine; the Antarctic interpretation is the claim."
      },
      "sources": [
        {
          "source_id": "source:84f4fa4063a6bf384622",
          "role": "Hapgood hypothesis history",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:560eed8d41b153d66ddb",
          "role": "Cartographic criticism",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ac67026bdec2f3d8fc87",
          "role": "The source authenticates the historical artifact, not the ice-free Antarctic interpretation.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:fdd25521704347e89f57",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:5be3f45044c71052b2c7",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "replica photograph of the map discussed",
        "asset": {
          "src": "assets/v13/5b11f82d65a4-piri-reis-1513-replica-yair-haklai-2023.jpg",
          "title": "Piri Reis depicts an ice-free Antarctic coast",
          "caption": "Museum-display REPLICA of the 1513 Piri Reis map, Yair Haklai 2023, CC BY-SA 4. The original is not pictured. This image documents the replica, not an ice-free Antarctic coast.",
          "credit": "Yair Haklai, 16 April 2023, Wikimedia Commons, CC BY-SA 4.0. Proportionally resized; otherwise unchanged.",
          "rights": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
          "source_url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
          "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
          "width": 1200,
          "height": 550,
          "fit": "contain",
          "visual_role": "replica photograph of the map discussed",
          "sha256": "5b11f82d65a451b4da9f4d7e1f9bfb36efc290f7a4799f0ae54052bc3a3414dc",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "object_date_text": null,
        "sort_start_year": null,
        "sort_month": null,
        "sort_day": null,
        "date_status": null,
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-15",
        "input_record_sha256": "12bc7dde59befae01ad61af284ee40fa4b4a1076e3f78141daa1e6cdb97d7aef",
        "original_fields": {
          "id": "HIST-15",
          "title": "Piri Reis depicts an ice-free Antarctic coast",
          "claim": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
          "category": "Cartographic interpretation",
          "status": "Unsupported identification",
          "counterevidence": "Cartographic criticism finds no demonstrated accurate Antarctic survey.",
          "sources": [
            {
              "url": "https://archive.aramcoworld.com/issue/198001/piri.reis.and.the.hapgood.hypotheses.htm",
              "role": "Hapgood hypothesis history"
            },
            {
              "url": "https://cdn.centerforinquiry.org/wp-content/uploads/sites/29/1986/10/22165322/p34.pdf",
              "role": "Cartographic criticism"
            },
            {
              "url": "https://www.unesco.org/en/memory-world/piri-reis-world-map-1513",
              "title": "Piri Reis world map fragment, 1513",
              "role": "The source authenticates the historical artifact, not the ice-free Antarctic interpretation."
            },
            {
              "url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://creativecommons.org/licenses/by-sa/4.0/",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "Map existence is genuine; the Antarctic interpretation is the claim.",
          "claim_family": "Ancient Antarctic cartography",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": "maps",
          "summary": "The southern coast on Piri Reis’s 1513 map represents ice-free Antarctica.",
          "reference_research_leads": {
            "reference_id": "t-ancient-maps",
            "items": [
              "Piri Reis 1513",
              "Finé 1531",
              "Mercator 1538",
              "Buache 1739"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "cited_material": [
            "Piri Reis world map fragment, 1513 — The source authenticates the historical artifact, not the ice-free Antarctic interpretation."
          ],
          "display_image": {
            "src": "assets/v13/5b11f82d65a4-piri-reis-1513-replica-yair-haklai-2023.jpg",
            "title": "Piri Reis depicts an ice-free Antarctic coast",
            "caption": "Museum-display REPLICA of the 1513 Piri Reis map, Yair Haklai 2023, CC BY-SA 4. The original is not pictured. This image documents the replica, not an ice-free Antarctic coast.",
            "credit": "Yair Haklai, 16 April 2023, Wikimedia Commons, CC BY-SA 4.0. Proportionally resized; otherwise unchanged.",
            "rights": "CC BY-SA 4.0, photographer own-work release on exact source file page. Attribution, license link, change disclosure; adaptations share alike.",
            "source_url": "https://commons.wikimedia.org/wiki/File:A_peculiar_map_drawn_by_the_Turkish_admiral_Piri_Reis_around_1513.jpg",
            "rights_url": "https://creativecommons.org/licenses/by-sa/4.0/",
            "width": 1200,
            "height": 550,
            "fit": "contain",
            "visual_role": "replica photograph of the map discussed",
            "sha256": "5b11f82d65a451b4da9f4d7e1f9bfb36efc290f7a4799f0ae54052bc3a3414dc",
            "source_manifest": "image-provenance-v13.json"
          },
          "supporting_images": []
        }
      },
      "record_sha256": "0e9a401606cc0893f06c6be94b56dbe1cffc981d8c96eabd95b2948a8996c270"
    },
    {
      "id": "theory:HIST-16",
      "legacy_id": "HIST-16",
      "kind": "theory",
      "title": "Oronce Fine records preglacial Antarctica",
      "display_title": "Oronce Fine records preglacial Antarctica",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-16",
      "summary": "Fine’s southern continent preserves a real survey of Antarctica before major ice cover.",
      "claim": "Fine’s southern continent preserves a real survey of Antarctica before major ice cover.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Conjectural southern geography is not evidence of a measured Antarctic coastline.",
        "limitations": "Related map hypothesis; do not count reproduction editions as new theories."
      },
      "sources": [
        {
          "source_id": "source:2136ca31b04b865a63a3",
          "role": "Documents map-based thesis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:560eed8d41b153d66ddb",
          "role": "Map-specific critical analysis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:11a6e51e04f7c02c49b1",
          "role": "This edition-specific original differs from the 1534 single-heart map.",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:1e04c472d1e3ad667d4a",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:0c14c4c6c5ead1af77d2",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "historical map discussed; different physical copy",
        "asset": {
          "src": "assets/v13/c70a98a76d04-artifact-11a6e51e04f7.jpg",
          "title": "Oronce Fine records preglacial Antarctica",
          "caption": "Finé double-heart world map, LOC catalog date 1531, with Hermannus Venraed inscription. This LOC copy differs from the BnF [1532] impression cited in the claim record. Conjectural Terra Australis is not proof of preglacial Antarctic surveying.",
          "credit": "Oronce Finé (1531). Library of Congress, Geography and Map Division, G3200 1531 .F5, LCCN 2005630228; World Digital Library.",
          "rights": "LOC World Digital Library reports no known copyright or other restrictions; free use and reuse absent restrictions.",
          "source_url": "https://www.loc.gov/item/2005630228/",
          "rights_url": "https://www.loc.gov/resource/g3200.ct001393/?sp=1",
          "width": 1200,
          "height": 819,
          "fit": "contain",
          "visual_role": "historical map discussed; different physical copy",
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              "role": "This edition-specific original differs from the 1534 single-heart map."
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          "verification_date": "2026-10-28",
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              "role": "Keep this map distinct from 1754 states and modern subglacial interpretations."
            },
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          "role": "image reproduction provenance; not proof of a linked interpretation",
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          "caption": "Ortelius’s 1570 Typus Orbis Terrarum shows conjectural Terra Australis. This is evidence of a historical mapped idea, not evidence that landmasses require hemispheric balance.",
          "credit": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of www.davidrumsey.com.",
          "rights": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "title": "Tierra del Fuego belongs to a vast polar continent",
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          "credit": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of www.davidrumsey.com.",
          "rights": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
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            "title": "Tierra del Fuego belongs to a vast polar continent",
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            "credit": "David Rumsey Map Collection, David Rumsey Map Center, Stanford University Libraries; courtesy of www.davidrumsey.com.",
            "rights": "Express site permission allows reproductions in digital publications by for-profit and nonprofit publishers without charge, with credit. Item includes Download 1 link; original is pre-1930. Linked general CC license is BY-NC-SA 3.0, NOT CC BY 4.0. No standalone facsimile sale authorized.",
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      "title": "New South Greenland in the Weddell Sea",
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      "url": "theory-vault.html#HIST-20",
      "summary": "Benjamin Morrell reported land where later investigations found no such coast.",
      "claim": "Benjamin Morrell reported land where later investigations found no such coast.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The alleged land was not established; mirage and navigation explanations have been considered.",
        "limitations": "Morrell’s Land is an alias, not a second entry. Specific original-source inspection remains desirable."
      },
      "sources": [
        {
          "source_id": "source:ee50c713605c21e35b21",
          "role": "Sourced historical overview",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:c28eb986e71e8e0350b6",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:6ff83e5a2efbca1b4d0f",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "modern explanatory illustration, not an original historical chart or verified coastline",
        "asset": {
          "src": "assets/v13/92f11e1f5d81-new-south-greenland-modern-diagram.png",
          "title": "New South Greenland — modern explanatory map of reported positions",
          "caption": "Modern explanatory diagram by Ruhrfisch, 2008–2009, marking Morrell’s reported coastline in red and other reported positions. It is not an 1823 map, a survey confirming land, or a photograph.",
          "credit": "Ruhrfisch / Online Map Creation, 2008–2009; crop by Ras 67, 2010. Wikimedia Commons, CC BY-SA 3.0.",
          "rights": "CC BY-SA 3.0 from creator; attribution and license link required, adaptations share alike.",
          "source_url": "https://commons.wikimedia.org/wiki/File:New_South_Greenland_Map.png",
          "rights_url": "https://creativecommons.org/licenses/by-sa/3.0/",
          "width": 398,
          "height": 344,
          "fit": "contain",
          "visual_role": "modern explanatory illustration, not an original historical chart or verified coastline",
          "sha256": "92f11e1f5d81e4b520b84ae3cc46ae344f927f2e997426bb7be822e8b268925d",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "CC BY-SA 3.0 from creator; attribution and license link required, adaptations share alike.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "object_date_text": null,
        "sort_start_year": null,
        "sort_month": null,
        "sort_day": null,
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "HIST-20",
          "title": "New South Greenland in the Weddell Sea",
          "claim": "Benjamin Morrell reported land where later investigations found no such coast.",
          "category": "Historical sighting",
          "status": "Phantom land",
          "counterevidence": "The alleged land was not established; mirage and navigation explanations have been considered.",
          "sources": [
            {
              "url": "https://en.wikipedia.org/wiki/New_South_Greenland",
              "role": "Sourced historical overview"
            },
            {
              "url": "https://commons.wikimedia.org/wiki/File:New_South_Greenland_Map.png",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://creativecommons.org/licenses/by-sa/3.0/",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "Morrell’s Land is an alias, not a second entry. Specific original-source inspection remains desirable.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Benjamin Morrell reported land where later investigations found no such coast.",
          "display_image": {
            "src": "assets/v13/92f11e1f5d81-new-south-greenland-modern-diagram.png",
            "title": "New South Greenland — modern explanatory map of reported positions",
            "caption": "Modern explanatory diagram by Ruhrfisch, 2008–2009, marking Morrell’s reported coastline in red and other reported positions. It is not an 1823 map, a survey confirming land, or a photograph.",
            "credit": "Ruhrfisch / Online Map Creation, 2008–2009; crop by Ras 67, 2010. Wikimedia Commons, CC BY-SA 3.0.",
            "rights": "CC BY-SA 3.0 from creator; attribution and license link required, adaptations share alike.",
            "source_url": "https://commons.wikimedia.org/wiki/File:New_South_Greenland_Map.png",
            "rights_url": "https://creativecommons.org/licenses/by-sa/3.0/",
            "width": 398,
            "height": 344,
            "fit": "contain",
            "visual_role": "modern explanatory illustration, not an original historical chart or verified coastline",
            "sha256": "92f11e1f5d81e4b520b84ae3cc46ae344f927f2e997426bb7be822e8b268925d",
            "source_manifest": "image-provenance-v13.json"
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      },
      "record_sha256": "b5a6e2288867cc866b0e11f6c31549eaa04f1a9d497a6dc2423d59560cbd9db1"
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    {
      "id": "theory:HIST-21",
      "legacy_id": "HIST-21",
      "kind": "theory",
      "title": "Emerald Island",
      "display_title": "Emerald Island",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-21",
      "summary": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
      "claim": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Repeated searches did not establish the charted island.",
        "limitations": "Subantarctic/Southern Ocean context rather than continental Antarctica."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review of reported islands",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ab56b1087a0d014b327c",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:e5612fe3c9f7b3fb0fee",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic historical chart detail of the named reported island",
        "asset": {
          "src": "assets/v13/8f4bd5838dae-emerald-1912-loc-detail.jpg",
          "title": "Emerald Island on a 1912 chart",
          "caption": "Emerald Island: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
          "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
          "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
          "source_url": "https://www.loc.gov/item/2002624041/",
          "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
          "width": 1000,
          "height": 700,
          "fit": "contain",
          "visual_role": "authentic historical chart detail of the named reported island",
          "sha256": "8f4bd5838daecca863609906e2fcdd28764e20176734eff38e74c372c84bc060",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
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        "sort_month": null,
        "sort_day": null,
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        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
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      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-21",
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        "original_fields": {
          "id": "HIST-21",
          "title": "Emerald Island",
          "claim": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
          "category": "Historical sighting",
          "status": "Phantom island",
          "counterevidence": "Repeated searches did not establish the charted island.",
          "sources": [
            {
              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review of reported islands"
            },
            {
              "url": "https://www.loc.gov/item/2002624041/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "Subantarctic/Southern Ocean context rather than continental Antarctica.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "Navigators reported an island south of Macquarie Island that entered Southern Ocean charts.",
          "display_image": {
            "src": "assets/v13/8f4bd5838dae-emerald-1912-loc-detail.jpg",
            "title": "Emerald Island on a 1912 chart",
            "caption": "Emerald Island: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
            "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
            "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
            "source_url": "https://www.loc.gov/item/2002624041/",
            "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
            "width": 1000,
            "height": 700,
            "fit": "contain",
            "visual_role": "authentic historical chart detail of the named reported island",
            "sha256": "8f4bd5838daecca863609906e2fcdd28764e20176734eff38e74c372c84bc060",
            "source_manifest": "image-provenance-v13.json"
          },
          "supporting_images": [
            {
              "src": "assets/v13/6e6ad310da37-south-polar-map-1912-loc-full.jpg",
              "title": "Emerald Island on a 1912 chart",
              "caption": "Full source page / supporting original. Emerald Island: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
              "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
              "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
              "source_url": "https://www.loc.gov/item/2002624041/",
              "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
              "width": 2600,
              "height": 2182,
              "fit": "contain",
              "visual_role": "authentic historical chart detail of the named reported island",
              "sha256": "6e6ad310da371ce9ab68ded35b6c6e70642ece31b65c65bf0bfaccd1aa8da1e9",
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      "record_sha256": "255fbe0564a2f5806d64f83a21312d910141c22c57ba83cd35f053b832117f5e"
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    {
      "id": "theory:HIST-22",
      "legacy_id": "HIST-22",
      "kind": "theory",
      "title": "Nimrod Islands",
      "display_title": "Nimrod Islands",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-22",
      "summary": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
      "claim": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Later searches found no islands at the reported location.",
        "limitations": "One group-level claim, not an entry per imagined island."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:83fe5f1466901fa475eb",
          "role": "Search-history overview",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ab56b1087a0d014b327c",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:e5612fe3c9f7b3fb0fee",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic historical chart detail of the named reported island",
        "asset": {
          "src": "assets/v13/a1b340eb2ac2-nimrod-1912-loc-detail.jpg",
          "title": "Nimrod Islands on a 1912 chart",
          "caption": "Nimrod Islands: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
          "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
          "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
          "source_url": "https://www.loc.gov/item/2002624041/",
          "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
          "width": 1000,
          "height": 700,
          "fit": "contain",
          "visual_role": "authentic historical chart detail of the named reported island",
          "sha256": "a1b340eb2ac2456edd3c378b8a081fa082568a303501f30c7948da4d9aba725c",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "object_date_text": null,
        "sort_start_year": null,
        "sort_month": null,
        "sort_day": null,
        "date_status": null,
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
        "input_key": "theory-vault.html#HIST-22",
        "input_record_sha256": "d2c3ba51e88b1ef24045a45a172cc82ce6cb39b8fb37a3865424364fe4761363",
        "original_fields": {
          "id": "HIST-22",
          "title": "Nimrod Islands",
          "claim": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
          "category": "Historical sighting",
          "status": "Phantom islands",
          "counterevidence": "Later searches found no islands at the reported location.",
          "sources": [
            {
              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review"
            },
            {
              "url": "https://en.wikipedia.org/wiki/Nimrod_Islands",
              "role": "Search-history overview"
            },
            {
              "url": "https://www.loc.gov/item/2002624041/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "One group-level claim, not an entry per imagined island.",
          "claim_family": "Phantom lands",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 2,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "unverified",
          "map_id": null,
          "summary": "A reported Southern Ocean island group entered charts after an 1828 sighting.",
          "display_image": {
            "src": "assets/v13/a1b340eb2ac2-nimrod-1912-loc-detail.jpg",
            "title": "Nimrod Islands on a 1912 chart",
            "caption": "Nimrod Islands: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
            "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
            "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
            "source_url": "https://www.loc.gov/item/2002624041/",
            "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
            "width": 1000,
            "height": 700,
            "fit": "contain",
            "visual_role": "authentic historical chart detail of the named reported island",
            "sha256": "a1b340eb2ac2456edd3c378b8a081fa082568a303501f30c7948da4d9aba725c",
            "source_manifest": "image-provenance-v13.json"
          },
          "supporting_images": [
            {
              "src": "assets/v13/6e6ad310da37-south-polar-map-1912-loc-full.jpg",
              "title": "Nimrod Islands on a 1912 chart",
              "caption": "Full source page / supporting original. Nimrod Islands: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
              "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
              "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
              "source_url": "https://www.loc.gov/item/2002624041/",
              "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
              "width": 2600,
              "height": 2182,
              "fit": "contain",
              "visual_role": "authentic historical chart detail of the named reported island",
              "sha256": "6e6ad310da371ce9ab68ded35b6c6e70642ece31b65c65bf0bfaccd1aa8da1e9",
              "source_manifest": "image-provenance-v13.json"
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      },
      "record_sha256": "752e8dc205211c5e10732132b8ebd45be97207cacf3f7412fa29fd8ce7a50266"
    },
    {
      "id": "theory:HIST-23",
      "legacy_id": "HIST-23",
      "kind": "theory",
      "title": "Dougherty Island",
      "display_title": "Dougherty Island",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-23",
      "summary": "A nineteenth-century report described an island between Cape Horn and New Zealand.",
      "claim": "A nineteenth-century report described an island between Cape Horn and New Zealand.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The described island was not confirmed by later searches.",
        "limitations": "Southern Ocean context; not evidence for lands hidden by a treaty."
      },
      "sources": [
        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review of reported island",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:ab56b1087a0d014b327c",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:e5612fe3c9f7b3fb0fee",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic historical chart detail of the named reported island",
        "asset": {
          "src": "assets/v13/234068df6c4c-dougherty-1912-loc-detail.jpg",
          "title": "Dougherty Island on a 1912 chart",
          "caption": "Dougherty Island: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
          "credit": "August Petermann; corrected by Hermann Habenicht; engraved by Carl Böhmer. Süd-Polar-Karte, Stielers Hand-Atlas, J. Perthes, Gotha, 1912. Library of Congress, Geography and Map Division, LCCN 2002624041.",
          "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
          "source_url": "https://www.loc.gov/item/2002624041/",
          "rights_url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
          "width": 1000,
          "height": 700,
          "fit": "contain",
          "visual_role": "authentic historical chart detail of the named reported island",
          "sha256": "234068df6c4ce4d64139c4cc010e1e54db8f732a98cb8ff3baf4f9893d1118bb",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
        "object_date_text": null,
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        "sort_month": null,
        "sort_day": null,
        "date_status": null,
        "date_note": null,
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        "related_date": null,
        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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          "status": "Phantom island",
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              "role": "image reproduction provenance; not proof of a linked interpretation"
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              "url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
              "role": "image reuse conditions"
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          ],
          "limitations": "Southern Ocean context; not evidence for lands hidden by a treaty.",
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          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 1,
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            "title": "Dougherty Island on a 1912 chart",
            "caption": "Dougherty Island: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
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              "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
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      "title": "Royal Company Islands",
      "display_title": "Royal Company Islands",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-24",
      "summary": "Charts retained a purported island group in the Southern Ocean.",
      "claim": "Charts retained a purported island group in the Southern Ocean.",
      "topics": [
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
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        {
          "source_id": "source:cd74d79fcd2dd562d4a3",
          "role": "Historical review of reported islands",
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        },
        {
          "source_id": "source:ab56b1087a0d014b327c",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
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        {
          "source_id": "source:e5612fe3c9f7b3fb0fee",
          "role": "image reuse conditions",
          "supports_claim_truth": null
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      ],
      "visual": {
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        "role": "authentic historical chart detail of the named reported island",
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          "rights": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
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          "width": 1000,
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          "visual_role": "authentic historical chart detail of the named reported island",
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          "source_manifest": "image-provenance-v13.json"
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        "reuse_notice": "Exact LOC resource: Geography and Map Division digitized collections free to use/reuse unless a contrary advisory; none present.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "provenance": {
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          "title": "Royal Company Islands",
          "claim": "Charts retained a purported island group in the Southern Ocean.",
          "category": "Historical sighting",
          "status": "Phantom islands",
          "counterevidence": "Subsequent investigation did not substantiate the reported group.",
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              "url": "https://www.australiangeographic.com.au/history-culture/2025/10/phantom-islands-of-the-southern-ocean/",
              "role": "Historical review of reported islands"
            },
            {
              "url": "https://www.loc.gov/item/2002624041/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/resource/g9800.ct000774/?sp=1",
              "role": "image reuse conditions"
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          ],
          "limitations": "Separate named discovery history, not a Nimrod alias.",
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          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
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          "label": "unverified",
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          "summary": "Charts retained a purported island group in the Southern Ocean.",
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            "src": "assets/v13/757e7d509bb6-royal-company-1912-loc-detail.jpg",
            "title": "Royal Company Islands on a 1912 chart",
            "caption": "Royal Company Islands: cropped detail from the 1912 Süd-Polar-Karte. This documents the name on a historical chart, not a confirmed island. Original question marks, tracks and grid are retained; full sheet supplied for context.",
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    {
      "id": "theory:HIST-25",
      "legacy_id": "HIST-25",
      "kind": "theory",
      "title": "Polynesian voyagers saw Antarctica before Europeans",
      "display_title": "Polynesian voyagers saw Antarctica before Europeans",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-25",
      "summary": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent.",
      "claim": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Critics challenge translations, chronology and lack of archaeological corroboration.",
        "limitations": "Do not label Indigenous traditions a hoax. Distinguish traditional narratives from contested modern geographical interpretation."
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          "role": "Paper presenting interpretation",
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          "role": "Scholarly response",
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          "source_id": "source:0555cf3a3588232689b2",
          "role": "Southern Maori scholarly perspective",
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "HIST-25",
          "title": "Polynesian voyagers saw Antarctica before Europeans",
          "claim": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent.",
          "category": "Disputed historical interpretation",
          "status": "Scholarly disagreement",
          "counterevidence": "Critics challenge translations, chronology and lack of archaeological corroboration.",
          "sources": [
            {
              "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11485871/",
              "role": "Paper presenting interpretation"
            },
            {
              "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC11485678/",
              "role": "Scholarly response"
            },
            {
              "url": "https://www.cambridge.org/core/journals/polar-record/article/abs/southern-maori-perspective-on-stories-of-polynesian-polar-voyaging/CD692ED61C1DAB8F33653C6FCFDDE366",
              "role": "Southern Maori scholarly perspective"
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          ],
          "limitations": "Do not label Indigenous traditions a hoax. Distinguish traditional narratives from contested modern geographical interpretation.",
          "claim_family": "Historical discovery",
          "verification_date": "2026-10-28",
          "verification_scope": "Source existence and described claim checked via web search/excerpts; not independent validation of alleged event.",
          "source_count": 3,
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          "summary": "An interpretation of voyaging traditions places Polynesian observers in Antarctic waters, perhaps viewing the continent."
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    {
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      "kind": "theory",
      "title": "Teddy Evans sabotaged Scott’s return",
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      "display_subtitle": null,
      "url": "theory-vault.html#HIST-26",
      "summary": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
      "claim": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Other researchers contest the inference of intentional sabotage and interpretation of orders.",
        "limitations": "Teddy/Edward Evans is not Petty Officer Edgar Evans. Neither intent nor complete causal responsibility should be asserted as settled."
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      "sources": [
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          "role": "Peer-reviewed argument",
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        {
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          "role": "Published critiques",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d4eba2305e5b86cdee83",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:774d8ce0b9cc2e7b9738",
          "role": "image reuse conditions",
          "supports_claim_truth": null
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      ],
      "visual": {
        "embedded": true,
        "role": "same-expedition route-map context",
        "asset": {
          "src": "assets/v13/8c98cff8a716-scott-sphere-operations-1913.jpg",
          "title": "Teddy Evans sabotaged Scott’s return",
          "caption": "1913 map of Scott’s expedition operations and final-journey locations. A route map cannot establish depot sabotage or Teddy Evans’s intent; Teddy/Edward Evans is not the Edgar Evans named on the map.",
          "credit": "Royal Geographical Society, The Geographical Journal, March 1913. Library of Congress, Geography and Map Division.",
          "rights": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
          "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
          "rights_url": "https://www.loc.gov/collections/general-maps/about-this-collection/rights-and-access/",
          "width": 774,
          "height": 1200,
          "fit": "contain",
          "visual_role": "same-expedition route-map context",
          "sha256": "8c98cff8a71690ede7ca0fb0e217e4ee4267accd1ea0fbffc6bcd231898bf496",
          "source_manifest": "image-provenance-v13.json"
        },
        "reuse_notice": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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          "title": "Teddy Evans sabotaged Scott’s return",
          "claim": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
          "category": "Contested expedition history",
          "status": "Published historical allegation, disputed",
          "counterevidence": "Other researchers contest the inference of intentional sabotage and interpretation of orders.",
          "sources": [
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              "url": "https://www.cambridge.org/core/journals/polar-record/article/why-didnt-they-ask-evans/224A49CABBF71E72B99C8C9C3B7236A4",
              "role": "Peer-reviewed argument"
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            {
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              "role": "Published critiques"
            },
            {
              "url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.loc.gov/collections/general-maps/about-this-collection/rights-and-access/",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "Teddy/Edward Evans is not Petty Officer Edgar Evans. Neither intent nor complete causal responsibility should be asserted as settled.",
          "claim_family": "Contested expedition history",
          "verification_date": "2026-10-28",
          "verification_scope": "Published source and claim checked; historical hypothesis not independently proven.",
          "source_count": 2,
          "browse_topic": "History & lost civilizations",
          "kind": "theory",
          "label": "unverified",
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          "summary": "Scott’s deputy depleted depots or withheld dog-team orders, contributing to the polar party’s deaths.",
          "display_image": {
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            "title": "Teddy Evans sabotaged Scott’s return",
            "caption": "1913 map of Scott’s expedition operations and final-journey locations. A route map cannot establish depot sabotage or Teddy Evans’s intent; Teddy/Edward Evans is not the Edgar Evans named on the map.",
            "credit": "Royal Geographical Society, The Geographical Journal, March 1913. Library of Congress, Geography and Map Division.",
            "rights": "LOC Geography and Map Division digitized-collection policy allows free use/reuse unless a contrary Rights Advisory is present. Exact institutional blog identifies map and division; no contrary image advisory appears. Collection-level reuse basis; no independent item catalog was located.",
            "source_url": "https://blogs.loc.gov/maps/2021/09/reaching-the-south-pole-during-the-heroic-age-of-exploration/",
            "rights_url": "https://www.loc.gov/collections/general-maps/about-this-collection/rights-and-access/",
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            "height": 1200,
            "fit": "contain",
            "visual_role": "same-expedition route-map context",
            "sha256": "8c98cff8a71690ede7ca0fb0e217e4ee4267accd1ea0fbffc6bcd231898bf496",
            "source_manifest": "image-provenance-v13.json"
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      "record_sha256": "1e9d4e6751d020665b714556469e2dd2578b3312adf8533dc2ebbe0311c19644"
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    {
      "id": "theory:HIST-27",
      "legacy_id": "HIST-27",
      "kind": "theory",
      "title": "Anthrax caused Edgar Evans’s death",
      "display_title": "Anthrax caused Edgar Evans’s death",
      "display_subtitle": null,
      "url": "theory-vault.html#HIST-27",
      "summary": "A retrospective hypothesis attributes Edgar Evans’s death to anthrax acquired through expedition animals or equipment.",
      "claim": "A retrospective hypothesis attributes Edgar Evans’s death to anthrax acquired through expedition animals or equipment.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The diagnosis is inferred from historical descriptions rather than microbiological confirmation.",
        "limitations": "Historical diagnostic debate, not a conspiracy and not current medical advice."
      },
      "sources": [
        {
          "source_id": "source:c9c1e3905ca23c9d1be5",
          "role": "Paper proposing diagnosis",
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        },
        {
          "source_id": "source:9099c80440efddcfe536",
          "role": "Discussion of earlier circumstantial hypothesis",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:1437e02de038b0f74697",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "historical photograph of the person discussed within the polar party",
        "asset": {
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      "summary": "Michael Salla relayed a medium's claimed message that China transferred former Dark Fleet bases for interstellar fleet production.",
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      "summary": "Corey Goode alleged that elite groups seeking refuge from a solar catastrophe attempted escape and became involved in a battle over Antarctica.",
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        "text": "No authenticated battle records or physical evidence are supplied; artist depictions are not photographs.",
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      "title": "Project Iceworm secretly armed Antarctica",
      "display_title": "Project Iceworm secretly armed Antarctica",
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      "summary": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice.",
      "claim": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice.",
      "topics": [
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        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program.",
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          "caption": "GREENLAND, not Antarctica: this April 2024 aerial photograph and radar composite documents the abandoned Camp Century installation. Comparative context for distinguishing measured structures from unsupported Antarctic underground-city or Iceworm claims; it does not show living settlements.",
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          "rights": "NASA media guidelines permit factual educational/informational website and editorial reuse with acknowledgement, absent third-party copyright notices. No endorsement or promotional/logo rights asserted. Exact page credits NASA-generated imagery and data; no contrary third-party notice.",
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        },
        "reuse_notice": "NASA media guidelines permit factual educational/informational website and editorial reuse with acknowledgement, absent third-party copyright notices. No endorsement or promotional/logo rights asserted. Exact page credits NASA-generated imagery and data; no contrary third-party notice.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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          "id": "MOD-004",
          "title": "Project Iceworm secretly armed Antarctica",
          "claim": "Goode and Salla claimed the Arctic Project Iceworm also placed weapons and military research facilities under Antarctic ice.",
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          "status": "unverified allegation",
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              "role": "claimant publication"
            },
            {
              "url": "https://science.nasa.gov/earth/earth-observatory/new-view-of-the-city-under-the-ice-153616/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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              "role": "image reuse conditions"
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          "limitations": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program.",
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          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The existence of a real Greenland project and Antarctic thermal caverns does not establish an Antarctic weapons program.",
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          "browse_topic": "Power, access & secrecy",
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            "rights": "NASA media guidelines permit factual educational/informational website and editorial reuse with acknowledgement, absent third-party copyright notices. No endorsement or promotional/logo rights asserted. Exact page credits NASA-generated imagery and data; no contrary third-party notice.",
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              "rights": "NASA media guidelines permit factual educational/informational website and editorial reuse with acknowledgement, absent third-party copyright notices. No endorsement or promotional/logo rights asserted. Exact page credits NASA-generated imagery and data; no contrary third-party notice.",
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      "id": "theory:MOD-005",
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      "kind": "theory",
      "title": "Antarctic-region sentient black goo",
      "display_title": "Antarctic-region sentient black goo",
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      "url": "theory-vault.html#MOD-005",
      "summary": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research.",
      "claim": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research.",
      "topics": [
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      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied.",
        "limitations": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied."
      },
      "sources": [
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          "role": "claimant interview",
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        {
          "source_id": "source:c86fea83ebd1dec28a9b",
          "role": "Antarctica-specific claimant interview",
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        },
        {
          "source_id": "source:7fd47764041af0907955",
          "role": "claim documentation and/or assessment",
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      "visual": {
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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        "original_fields": {
          "id": "MOD-005",
          "title": "Antarctic-region sentient black goo",
          "claim": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research.",
          "category": "alien folklore",
          "status": "unverified allegation",
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              "url": "https://rumble.com/v1k36ia-bases-46-harald-kautz-vella-part-2.html",
              "role": "claimant interview"
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            {
              "url": "https://timefordisclosure.com/antarcticas-alien-black-goo-e-t-bases-and-secret-societies-new-2021-brad-olsen/",
              "role": "Antarctica-specific claimant interview"
            },
            {
              "url": "https://pod.wave.co/podcast/that-ufo-podcast/what-is-hidden-beneath-antarctica-ufos-secret-bases-and-hollow-earth-with-brad-olsen",
              "role": "claim documentation and/or assessment"
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          "limitations": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "This is regional South Sandwich Islands lore, not a demonstrated continental discovery. No authenticated specimen or laboratory analysis is supplied.",
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            {
              "title": "Sentient Black Goo",
              "claim": "A sentient substance recovered near Antarctica is linked to secret weapons research.",
              "status": "Unverified narrative; Thule/South Sandwich setting is not continental Antarctica."
            }
          ],
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          "summary": "Fringe accounts allege that intelligent alien oil was recovered around Thule Island and connected with covert research."
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      "id": "theory:MOD-006",
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      "title": "Antarctic fleet boarded Oumuamua",
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      "display_subtitle": null,
      "url": "theory-vault.html#MOD-006",
      "summary": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
      "claim": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
      "topics": [
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      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story.",
        "limitations": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story."
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      "sources": [
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        },
        {
          "source_id": "source:08a709f267a04fa55e2a",
          "role": "image reproduction provenance; not proof of a linked interpretation",
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        },
        {
          "source_id": "source:c6ad53c2f8f1a6dd0bfe",
          "role": "image reuse conditions",
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      "visual": {
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        "role": "authentic scientific subject context; not claim evidence",
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          "caption": "Combined VLT and Gemini South telescope exposures show Oumuamua as the small point inside the blue circle. Background stars trail because the telescopes tracked the object. This observed composite is not a resolved spacecraft photograph and supplies no evidence of an Antarctic boarding mission.",
          "credit": "ESO/K. Meech et al. CC BY 4.0. Proportionally resized.",
          "rights": "CC BY 4.0. Full credit must be clearly visible and unaltered; link credit to source and license; no ESO endorsement.",
          "source_url": "https://www.eso.org/public/images/eso1737b/",
          "rights_url": "https://www.eso.org/public/outreach/copyright/",
          "width": 1600,
          "height": 910,
          "fit": "contain",
          "visual_role": "authentic scientific subject context; not claim evidence",
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          "source_limitations": "ESO image eso1737b released 20 November 2017; actual telescope exposures combined and annotated by source, not artist impression.",
          "transformations": "Full source frame retained; proportional resize and JPEG encoding only.",
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        },
        "reuse_notice": "CC BY 4.0. Full credit must be clearly visible and unaltered; link credit to source and license; no ESO endorsement.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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          "id": "MOD-006",
          "title": "Antarctic fleet boarded Oumuamua",
          "claim": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
          "category": "secret space program",
          "status": "unverified allegation",
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              "role": "claimant publication"
            },
            {
              "url": "https://www.eso.org/public/images/eso1737b/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.eso.org/public/outreach/copyright/",
              "role": "image reuse conditions"
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          ],
          "limitations": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "Accounts are largely secondhand, and anonymous agreement is not independent physical confirmation. Separate from the octagonal-building story.",
          "claim_family": "antarctic fleet boarded oumuamua",
          "source_count": 1,
          "browse_topic": "Aliens & secret technology",
          "kind": "theory",
          "label": "unverified",
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          "summary": "Anonymous Spartan witnesses claimed a multinational fleet based in Antarctica boarded the interstellar object before its public discovery.",
          "display_image": {
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            "title": "Observed Oumuamua point source, ESO combined exposures, 2017",
            "caption": "Combined VLT and Gemini South telescope exposures show Oumuamua as the small point inside the blue circle. Background stars trail because the telescopes tracked the object. This observed composite is not a resolved spacecraft photograph and supplies no evidence of an Antarctic boarding mission.",
            "credit": "ESO/K. Meech et al. CC BY 4.0. Proportionally resized.",
            "rights": "CC BY 4.0. Full credit must be clearly visible and unaltered; link credit to source and license; no ESO endorsement.",
            "source_url": "https://www.eso.org/public/images/eso1737b/",
            "rights_url": "https://www.eso.org/public/outreach/copyright/",
            "width": 1600,
            "height": 910,
            "fit": "contain",
            "visual_role": "authentic scientific subject context; not claim evidence",
            "sha256": "c0116909cb384f7aaf359c3c4de034ede1da650c61f5ad799e285a2b7432d5fa",
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      "id": "theory:MOD-007",
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      "kind": "theory",
      "title": "Rothschild Island is privately owned by its namesake family",
      "display_title": "Rothschild Island is privately owned by its namesake family",
      "display_subtitle": null,
      "url": "theory-vault.html#MOD-007",
      "summary": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
      "claim": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence.",
        "limitations": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence."
      },
      "sources": [
        {
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          "role": "fact-check",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:59dd81b1bc57bf41c009",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:54895d592300bdd22f51",
          "role": "image reuse conditions",
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      ],
      "visual": {
        "embedded": true,
        "role": "authentic scientific/geographic context, not claim evidence",
        "asset": {
          "src": "assets/v14/953eb9a94370-rothschild-map.png",
          "title": "Scientific study map locating Rothschild Island",
          "caption": "Map from a published emperor-penguin study: marker 6 and the inset identify the Rothschild Island study colony. Geographic and scientific context only; a place name and research map are not a title deed or evidence of family ownership.",
          "credit": "Trathan, Wienecke, Fleming and Ireland, Polar Biology 47, 533–547 (2024), doi:10.1007/s 00300-024-03252-x, figure 1. CC BY 4.0. Proportionally resized; full frame retained.",
          "rights": "CC BY 4.0",
          "source_url": "https://link.springer.com/article/10.1007/s00300-024-03252-x",
          "rights_url": "https://creativecommons.org/licenses/by/4.0/",
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          "fit": "contain",
          "visual_role": "authentic scientific/geographic context, not claim evidence",
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          "source_manifest": "image-provenance-v14.json",
          "display_label": null,
          "source_limitations": "Exact article CC BY license covers figure; no separate rights exclusion. Preserve full inset and numbered markers. Caption must explain 6 because map itself lacks island-name text.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "id": "MOD-007",
          "title": "Rothschild Island is privately owned by its namesake family",
          "claim": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
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            {
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            {
              "url": "https://link.springer.com/article/10.1007/s00300-024-03252-x",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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            {
              "url": "https://creativecommons.org/licenses/by/4.0/",
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          ],
          "limitations": "Naming an island in honor of a patron is not ownership. Avoid repeating insinuations about an ethnic or religious group as evidence.",
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          "browse_topic": "Power, access & secrecy",
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          "summary": "Posts infer that the Rothschild family bought or controls the Antarctic island bearing its name.",
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            "caption": "Map from a published emperor-penguin study: marker 6 and the inset identify the Rothschild Island study colony. Geographic and scientific context only; a place name and research map are not a title deed or evidence of family ownership.",
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      "kind": "theory",
      "title": "Oates Land alien face carving",
      "display_title": "Oates Land alien face carving",
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      "url": "theory-vault.html#MOD-008",
      "summary": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument.",
      "claim": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction.",
        "limitations": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction."
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      "sources": [
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      ],
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        "role": "not_embedded",
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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      "provenance": {
        "input": "reader-data.json",
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          "title": "Oates Land alien face carving",
          "claim": "A face-like Antarctic satellite formation was interpreted as an alien face or constructed monument.",
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          "limitations": "The cited page documents the claim at 72°00′36″S, 168°34′53″E, not archaeology. Facial resemblance alone cannot establish construction.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
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      "kind": "theory",
      "title": "Giant door near Showa Station",
      "display_title": "Giant door near Showa Station",
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      "url": "theory-vault.html#MOD-009",
      "summary": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice.",
      "claim": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided.",
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        {
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          "role": "report quoting glaciologist sea-ice explanation; rolling archive",
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      "visual": {
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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          "title": "Giant door near Showa Station",
          "claim": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice.",
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            {
              "url": "https://www.streetviewfun.com/category/country/antarctica/",
              "role": "report quoting glaciologist sea-ice explanation; rolling archive"
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          "limitations": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided.",
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          "counterevidence": "The thread contains incompatible explanations. A satellite resemblance does not show a functioning doorway; no on-site investigation is provided.",
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          "summary": "A rectangular feature near Showa Station was described as a secret entrance in Antarctic ice."
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      "id": "theory:MOD-010",
      "legacy_id": "MOD-010",
      "kind": "theory",
      "title": "Giant Antarctic staircase or landing installation",
      "display_title": "Giant Antarctic staircase or landing installation",
      "display_subtitle": null,
      "url": "theory-vault.html#MOD-010",
      "summary": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain.",
      "claim": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain.",
      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "These are competing readings of one image, consolidated as one entry rather than counted separately.",
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      "sources": [
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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          "claim": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain.",
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          "sources": [
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              "url": "https://satnews.com/2017/01/12/google-earth-images-of-antarctica-stairs-to-where/",
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          "limitations": "These are competing readings of one image, consolidated as one entry rather than counted separately.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
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          "summary": "A 2017 image was interpreted as constructed steps, a landing site, or underground ventilation rather than terrain."
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      "kind": "theory",
      "title": "King George Island disappearing cave cover-up",
      "display_title": "King George Island disappearing cave cover-up",
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      "url": "theory-vault.html#MOD-011",
      "summary": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance.",
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      "topics": [
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      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Snow cover and seasonal changes are ordinary alternatives; the cited discussion does not establish intervention.",
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      "sources": [
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "dates": {
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      "provenance": {
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          "claim": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance.",
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          "limitations": "Snow cover and seasonal changes are ordinary alternatives; the cited discussion does not establish intervention.",
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          "summary": "Changing imagery of a cave near 61.99°S, 58.02°W was attributed to concealment of an artificial entrance."
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      "legacy_id": "MOD-012",
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      "title": "Tanks guard an Antarctic crashed UFO",
      "display_title": "Tanks guard an Antarctic crashed UFO",
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      "url": "theory-vault.html#MOD-012",
      "summary": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft.",
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The page itself contains objections about buildings, scale, and coordinates. No verified vehicles or recovered craft are established.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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      "provenance": {
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          "claim": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft.",
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          "limitations": "The page itself contains objections about buildings, scale, and coordinates. No verified vehicles or recovered craft are established.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
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          "browse_topic": "Images, clips & hoaxes",
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          "summary": "A fringe blog interpreted satellite objects near 77°49′47.46″S, 166°50′22.31″E as tanks guarding a craft."
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    {
      "id": "theory:MOD-013",
      "legacy_id": "MOD-013",
      "kind": "theory",
      "title": "Swastika-shaped Antarctic megalithic city",
      "display_title": "Swastika-shaped Antarctic megalithic city",
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      "url": "theory-vault.html#MOD-013",
      "summary": "A 2018 UFOmania video alleged satellite footage showed a swastika-shaped structure and concealed ancient city.",
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction.",
        "limitations": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction."
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      "sources": [
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          "role": "claimant video",
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      ],
      "visual": {
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        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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      "provenance": {
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          "title": "Swastika-shaped Antarctic megalithic city",
          "claim": "A 2018 UFOmania video alleged satellite footage showed a swastika-shaped structure and concealed ancient city.",
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          ],
          "limitations": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction.",
          "verification_date": "2026-10-28",
          "verification_level": "Source text/search excerpt inspected; claim truth not assumed",
          "counterevidence": "The video description establishes circulation of the claim, not reliable location, age, imagery provenance, or construction.",
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      "summary": "An insider leaked telescope images of the incoming planet Nibiru.",
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        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
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        "limitations": "Source demonstrates circulation of the claim, not its truth; independently authenticated evidence is required."
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        {
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          "source_url": "https://commons.wikimedia.org/wiki/File:South_pole_telescope_at_zenith.jpg",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "caption": "An authentic exterior photograph of Neumayer Station III. It documents the research station, not the disputed webcam frame or a second planet.",
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          "rights": "CC BY 4.0 explicitly credited on exact DLR image page. Credit author and source, link license, disclose resizing. No endorsement implied.",
          "source_url": "https://www.dlr.de/en/images/2016/2/neumayer-station-iii-in-the-antarctic_23040",
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        "reuse_notice": "CC BY 4.0 explicitly credited on exact DLR image page. Credit author and source, link license, disclose resizing. No endorsement implied.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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            "rights": "CC BY 4.0 explicitly credited on exact DLR image page. Credit author and source, link license, disclose resizing. No endorsement implied.",
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      "summary": "Photographs document a dimensional portal in Antarctica.",
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          "summary": "The NSA stopped or took over Lake Vostok exploration for national-security reasons.",
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            "height": 1067,
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            "visual_role": "authentic scientific subject context; not claim evidence",
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              "title": "Vostok Station oblique aerial photograph, 2013",
              "caption": "Oblique NASA aerial photograph of Vostok Station,27 November 2013. Documentary surface-station context only; it does not reveal subglacial objects or demonstrate the alleged cause of warming.",
              "credit": "Michael Studinger / NASA Goddard Space Flight Center,27 November 2013. Proportionally resized.",
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              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
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      "summary": "Megalodon persists in remote Antarctic waters.",
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated surviving specimen; narrative documents a survival claim, not discovery.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
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          "caption": "Megalodon fossil tooth P 9670, a Miocene specimen from Hungary in Museums Victoria. This authentic fossil is comparative palaeontological context, not an Antarctic find or evidence that megalodon survives today.",
          "credit": "Benjamin Healley / Museums Victoria, specimen P 9670, CC BY 4.0. Proportionally resized.",
          "rights": "CC BY 4.0, explicitly licensed on exact image record; attribution and source/license link required.",
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          "rights_url": "https://creativecommons.org/licenses/by/4.0/",
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        "reuse_notice": "CC BY 4.0, explicitly licensed on exact image record; attribution and source/license link required.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "claim": "Megalodon persists in remote Antarctic waters.",
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              "role": "image reproduction provenance; not proof of a linked interpretation"
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            "title": "Megalodon fossil tooth P 9670",
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            "credit": "Benjamin Healley / Museums Victoria, specimen P 9670, CC BY 4.0. Proportionally resized.",
            "rights": "CC BY 4.0, explicitly licensed on exact image record; attribution and source/license link required.",
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      "title": "Antarctic Godzilla",
      "display_title": "Antarctic Godzilla",
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      "url": "theory-vault.html#THS-002",
      "summary": "The Soya crew encountered a huge unknown mammal in 1958.",
      "claim": "The Soya crew encountered a huge unknown mammal in 1958.",
      "topics": [
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Historical cryptid account; later linked to Ningen but predates that internet legend.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "title": "Antarctic Godzilla",
          "claim": "The Soya crew encountered a huge unknown mammal in 1958.",
          "category": "reported sighting",
          "status": "Historical cryptid account; later linked to Ningen but predates that internet legend.",
          "counterevidence": "Historical cryptid account; later linked to Ningen but predates that internet legend.",
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              "role": "claim documentation or assessment"
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          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
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          "verification_date": "2026-10-28",
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      "id": "theory:THS-003",
      "legacy_id": "THS-003",
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      "title": "Garden of Eden under Antarctic ice",
      "display_title": "Garden of Eden under Antarctic ice",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-003",
      "summary": "The biblical garden was located on Antarctica before glaciation.",
      "claim": "The biblical garden was located on Antarctica before glaciation.",
      "topics": [
        "Creatures, legends & belief"
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        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Speculative location claim, unsupported by authenticated archaeological evidence.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
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      "visual": {
        "embedded": false,
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "title": "Garden of Eden under Antarctic ice",
          "claim": "The biblical garden was located on Antarctica before glaciation.",
          "category": "religious interpretation",
          "status": "Speculative location claim, unsupported by authenticated archaeological evidence.",
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              "role": "claim documentation or assessment"
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      "legacy_id": "THS-004",
      "kind": "theory",
      "title": "Fabricated Antarctic midnight sun",
      "display_title": "Fabricated Antarctic midnight sun",
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      "url": "theory-vault.html#THS-004",
      "summary": "Continuous Antarctic sunlight footage is staged or digitally manufactured.",
      "claim": "Continuous Antarctic sunlight footage is staged or digitally manufactured.",
      "topics": [
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Rejected by direct polar observations; includes Final Experiment fakery variants as one family.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
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          "role": "image reproduction provenance; not proof of a linked interpretation",
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        "role": "authentic scientific subject context; not claim evidence",
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          "caption": "Landsat 8 captured these sunlit iceberg fragments near Pine Island Glacier close to local midnight on 15 December 2017. An independent satellite-observation example, not footage from the Final Experiment; a single still does not by itself show 24 continuous hours.",
          "credit": "NASA; Landsat 8 observation,15 December 2017. Proportionally resized.",
          "rights": "NASA imagery reusable for factual informational/editorial purposes under NASA media guidelines; exact source credit checked for third-party restrictions. No NASA endorsement.",
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          "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
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        "reuse_notice": "NASA imagery reusable for factual informational/editorial purposes under NASA media guidelines; exact source credit checked for third-party restrictions. No NASA endorsement.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "claim": "Continuous Antarctic sunlight footage is staged or digitally manufactured.",
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          "status": "Rejected by direct polar observations; includes Final Experiment fakery variants as one family.",
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              "role": "image reuse conditions"
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            "title": "Sunlit Pine Island icebergs near local midnight, 2017",
            "caption": "Landsat 8 captured these sunlit iceberg fragments near Pine Island Glacier close to local midnight on 15 December 2017. An independent satellite-observation example, not footage from the Final Experiment; a single still does not by itself show 24 continuous hours.",
            "credit": "NASA; Landsat 8 observation,15 December 2017. Proportionally resized.",
            "rights": "NASA imagery reusable for factual informational/editorial purposes under NASA media guidelines; exact source credit checked for third-party restrictions. No NASA endorsement.",
            "source_url": "https://www.nasa.gov/image-article/under-midnight-sun/",
            "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
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            "fit": "contain",
            "visual_role": "authentic scientific subject context; not claim evidence",
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      "title": "Drilling the firmament",
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      "url": "theory-vault.html#THS-005",
      "summary": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
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      "topics": [
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        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Claimant explicitly cannot identify or authenticate the alleged witness.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
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        "role": "authentic scientific ice-core photograph; comparative context, not the alleged event",
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          "title": "WAIS Divide ice core emerging at receiving station",
          "caption": "Actual WAIS Divide ice core emerging from the fluid evacuation device at the receiving and logging station. Modern scientific fieldwork, not the alleged 1960s firmament encounter; a photograph alone does not establish an ice-core timescale.",
          "credit": "Souney et al. (2014), International Glaciological Society; CC BY 3.0 via University of New Hampshire Scholars Repository.",
          "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
          "source_url": "https://scholars.unh.edu/faculty_pubs/337/",
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          "fit": "contain",
          "visual_role": "authentic scientific ice-core photograph; comparative context, not the alleged event",
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        "reuse_notice": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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        "original_fields": {
          "id": "THS-005",
          "title": "Drilling the firmament",
          "claim": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
          "category": "flat-earth allegation",
          "status": "Claimant explicitly cannot identify or authenticate the alleged witness.",
          "counterevidence": "Claimant explicitly cannot identify or authenticate the alleged witness.",
          "sources": [
            {
              "url": "https://www.youtube.com/watch?v=Mz3-DRa2cDw",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://scholars.unh.edu/faculty_pubs/337/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://creativecommons.org/licenses/by/3.0/",
              "role": "image reuse conditions"
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          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "drilling the firmament",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
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          "summary": "1960s Antarctic drilling encountered the wall or dome of the firmament.",
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            "reference_id": "t-dome",
            "items": [
              "Operation Argus (1958)",
              "Operation Fishbowl (1962)",
              "Antarctic Treaty restrictions"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "display_image": {
            "src": "assets/v13/0996b91978e0-wais-core-receiving.jpg",
            "title": "WAIS Divide ice core emerging at receiving station",
            "caption": "Actual WAIS Divide ice core emerging from the fluid evacuation device at the receiving and logging station. Modern scientific fieldwork, not the alleged 1960s firmament encounter; a photograph alone does not establish an ice-core timescale.",
            "credit": "Souney et al. (2014), International Glaciological Society; CC BY 3.0 via University of New Hampshire Scholars Repository.",
            "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
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            "rights_url": "https://creativecommons.org/licenses/by/3.0/",
            "width": 641,
            "height": 965,
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            "visual_role": "authentic scientific ice-core photograph; comparative context, not the alleged event",
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              "src": "assets/v13/b393490b3061-wais-core-lab.jpg",
              "title": "WAIS Divide ice-core measurement and archive",
              "caption": "WAIS Divide ice core measured and stored at the National Ice Core Laboratory in the United States. This is the laboratory/archive, not an Antarctic underground settlement; it illustrates how physical samples are handled, not the EPICA core or proof of any speculation.",
              "credit": "Peter Rejcek/NSF, in Souney et al. (2014), International Glaciological Society; CC BY 3.0 via University of New Hampshire Scholars Repository.",
              "rights": "Exact UNH repository record licenses article under CC BY 3.0; preserve photographer credit and source/license link.",
              "source_url": "https://scholars.unh.edu/faculty_pubs/337/",
              "rights_url": "https://creativecommons.org/licenses/by/3.0/",
              "width": 1200,
              "height": 400,
              "fit": "contain",
              "visual_role": "authentic scientific ice-core photograph; comparative context, not the alleged event",
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              "source_manifest": "image-provenance-v13.json"
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      "id": "theory:THS-006",
      "legacy_id": "THS-006",
      "kind": "theory",
      "title": "Twenty hidden continents",
      "display_title": "Twenty hidden continents",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-006",
      "summary": "An Antarctic barrier hides twenty additional inhabited continents.",
      "claim": "An Antarctic barrier hides twenty additional inhabited continents.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Contradicted by global mapping; extra lands are not authenticated geography.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:06a6575b3a5229e0b999",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:908b6ad153d1ec85d52c",
          "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "thumbs/modis-antarctic-coasts.jpg",
          "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping Original context source ↗",
          "title": "Twenty hidden continents",
          "href": "theory-vault.html#THS-006"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "sort_month": null,
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
        "input": "reader-data.json",
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          "id": "THS-006",
          "title": "Twenty hidden continents",
          "claim": "An Antarctic barrier hides twenty additional inhabited continents.",
          "category": "flat-earth allegation",
          "status": "Contradicted by global mapping; extra lands are not authenticated geography.",
          "counterevidence": "Contradicted by global mapping; extra lands are not authenticated geography.",
          "sources": [
            {
              "url": "https://www.yahoo.com/news/no-antarctica-not-ice-wall-224441366.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents."
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "twenty hidden continents",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
          "map_id": "icewall",
          "summary": "An Antarctic barrier hides twenty additional inhabited continents.",
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            "reference_id": "t-beyond",
            "items": [
              "Byrd quotes about 'land beyond the pole'",
              "Old maps of a vast Terra Australis",
              "Highjump's size"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "supporting_images": [
            {
              "src": "thumbs/modis-antarctic-coasts.jpg",
              "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
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      "record_sha256": "fbbdddd25836fcc06694fd2ffdf030ea1138430273ff09b424fb2bcdc390d6ba"
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      "id": "theory:THS-007",
      "legacy_id": "THS-007",
      "kind": "theory",
      "title": "Antarctic circumferential ice wall",
      "display_title": "Antarctic circumferential ice wall",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-007",
      "summary": "Antarctica is the boundary of a flat Earth rather than a continent.",
      "claim": "Antarctica is the boundary of a flat Earth rather than a continent.",
      "topics": [
        "Maps & hidden lands"
      ],
      "assessment": {
        "label": "speculative",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Contradicted by surveys, navigation and satellite observations.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
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          "source_id": "source:845a3a235a5d4cc827c2",
          "role": "claim documentation or assessment",
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        {
          "source_id": "source:908b6ad153d1ec85d52c",
          "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
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      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "venable-ice-shelf.jpg",
          "caption": "NASA/JPL-Caltech/UC Irvine / Ice-shelf context / Context image—not proof of the broader claim.",
          "title": "Antarctic circumferential ice wall",
          "href": "theory-vault.html#THS-007"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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          "id": "THS-007",
          "title": "Antarctic circumferential ice wall",
          "claim": "Antarctica is the boundary of a flat Earth rather than a continent.",
          "category": "flat-earth allegation",
          "status": "Contradicted by surveys, navigation and satellite observations.",
          "counterevidence": "Contradicted by surveys, navigation and satellite observations.",
          "sources": [
            {
              "url": "https://science.feedback.org/review/how-we-know-earth-is-round-not-flat-a-review-of-claims-and-misconceptions-about-earths-shape/",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "role": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents."
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
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          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Maps & hidden lands",
          "kind": "theory",
          "label": "speculative",
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          "summary": "Antarctica is the boundary of a flat Earth rather than a continent.",
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            "items": [
              "Photographs of the Ross Ice Shelf front",
              "Gleason's 1892 map",
              "The Antarctic Treaty's controls on activity south of 60°S",
              "Byrd's references to vast land"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
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              "caption": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents. NASA Goddard MODIS Rapid Response Team / Aspect-preserving resize only; no generative editing or cropping",
              "title": "Terra MODIS recorded Antarctic coastal ice on 2 November 2011. An authentic satellite observation, not a depiction of hidden continents.",
              "source_url": "https://images.nasa.gov/details/GSFC_20171208_Archive_e001866",
              "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "Scientific / historical context; not automatic proof of the claim"
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      "record_sha256": "77a5ee511ee5ad430e21c071fcdda771f15c22a996b9088726a7163449909a54"
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      "id": "theory:THS-008",
      "legacy_id": "THS-008",
      "kind": "theory",
      "title": "Blanket Antarctic no-fly zone",
      "display_title": "Blanket Antarctic no-fly zone",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-008",
      "summary": "A legal ban prevents all aircraft flying over Antarctica.",
      "claim": "A legal ban prevents all aircraft flying over Antarctica.",
      "topics": [
        "Power, access & secrecy"
      ],
      "assessment": {
        "label": "disputed",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No such blanket ban; viral enforcement footage was filmed over the USA.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:60105b414fa6733b93c1",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d9b08df723ef5180e0e5",
          "role": "Primary institutional context; not proof of the speculative claim",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "context_or_documentary_original",
        "asset": {
          "src": "highjump-aircraft.png",
          "caption": "NARA / Historical context, not current access guidance / Context image—not proof of the broader claim.",
          "title": "Blanket Antarctic no-fly zone",
          "href": "theory-vault.html#THS-008"
        },
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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          "id": "THS-008",
          "title": "Blanket Antarctic no-fly zone",
          "claim": "A legal ban prevents all aircraft flying over Antarctica.",
          "category": "access conspiracy",
          "status": "No such blanket ban; viral enforcement footage was filmed over the USA.",
          "counterevidence": "No such blanket ban; viral enforcement footage was filmed over the USA.",
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            {
              "url": "https://leadstories.com/hoax-alert/2023/04/fact-check-video-does-not-show-military-enforcement-of-no-fly-zone-over-antarctica.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://www.ats.aq/e/antarctictreaty.html",
              "role": "Primary institutional context; not proof of the speculative claim"
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          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
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          "verification_date": "2026-10-28",
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          "browse_topic": "Power, access & secrecy",
          "kind": "theory",
          "label": "disputed",
          "map_id": "access",
          "summary": "A legal ban prevents all aircraft flying over Antarctica.",
          "reference_research_leads": {
            "reference_id": "t-treaty-secrecy",
            "items": [
              "Permit requirements",
              "Bans on mining and military activity",
              "Few visitors"
            ],
            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "research_context": [
            {
              "text": "Antarctic Treaty inspection provisions concern designated state observers, not unrestricted access for every tourist. Peaceful scientific use of military personnel or equipment is permitted.",
              "source_url": "https://www.ats.aq/e/antarctictreaty.html"
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      "record_sha256": "7ac655a7ab929c37c6611712255ff0746791459fd07bdfe48fc3a1d2c3c27557"
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    {
      "id": "theory:THS-009",
      "legacy_id": "THS-009",
      "kind": "theory",
      "title": "COVID names predicted in Antarctic islands",
      "display_title": "COVID names predicted in Antarctic islands",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-009",
      "summary": "Omicron and Delta place names reveal advance planning of pandemic variants.",
      "claim": "Omicron and Delta place names reveal advance planning of pandemic variants.",
      "topics": [
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      ],
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Greek-letter geographic names do not establish pandemic planning.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
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          "role": "claim documentation or assessment",
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      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "sort_month": null,
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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          "id": "THS-009",
          "title": "COVID names predicted in Antarctic islands",
          "claim": "Omicron and Delta place names reveal advance planning of pandemic variants.",
          "category": "naming conspiracy",
          "status": "Greek-letter geographic names do not establish pandemic planning.",
          "counterevidence": "Greek-letter geographic names do not establish pandemic planning.",
          "sources": [
            {
              "url": "https://www.poynter.org/tfcn/2023/sinister-or-simple-checking-out-antarctica-conspiracy-theories/",
              "role": "claim documentation or assessment"
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          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "covid names predicted in antarctic islands",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Power, access & secrecy",
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          "summary": "Omicron and Delta place names reveal advance planning of pandemic variants."
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    {
      "id": "theory:THS-010",
      "legacy_id": "THS-010",
      "kind": "theory",
      "title": "Eighteenth-century Antarctic nuclear war",
      "display_title": "Eighteenth-century Antarctic nuclear war",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-010",
      "summary": "A recent nuclear war destroyed a formerly flourishing Antarctica.",
      "claim": "A recent nuclear war destroyed a formerly flourishing Antarctica.",
      "topics": [
        "History & lost civilizations"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No evidence of the alleged war; long ice history contradicts recent freezing.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:9430331f1138e5c3789e",
          "role": "claim documentation or assessment",
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        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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        "source_rechecked_at": null
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      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "THS-010",
          "title": "Eighteenth-century Antarctic nuclear war",
          "claim": "A recent nuclear war destroyed a formerly flourishing Antarctica.",
          "category": "alternative history",
          "status": "No evidence of the alleged war; long ice history contradicts recent freezing.",
          "counterevidence": "No evidence of the alleged war; long ice history contradicts recent freezing.",
          "sources": [
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              "url": "https://fullfact.org/online/not-illegal-to-fly-over-antarctica/",
              "role": "claim documentation or assessment"
            }
          ],
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            "caption": "Landsat 8 view of Deception Island on 23 March 2018. Geographic context showing the volcanic island and its flooded caldera; this is not a photograph of the alleged historical UFO sightings.",
            "credit": "NASA Earth Observatory / Lauren Dauphin, using Landsat data from USGS. Full frame retained; JPEG encoding.",
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            "visual_role": "authentic geographic/scientific context; not claim evidence",
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      "id": "theory:THS-015",
      "legacy_id": "THS-015",
      "kind": "theory",
      "title": "Admiralty Bay transmedium UFO",
      "display_title": "Admiralty Bay transmedium UFO",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-015",
      "summary": "A 1961 object broke through Antarctic ice before flying away.",
      "claim": "A 1961 object broke through Antarctic ice before flying away.",
      "topics": [
        "Power, access & secrecy"
      ],
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "UFO researcher Richard Dolan corrected the dramatic ice-emergence version.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
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        {
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        }
      ],
      "visual": {
        "embedded": false,
        "role": "not_embedded",
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        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "original_fields": {
          "id": "THS-015",
          "title": "Admiralty Bay transmedium UFO",
          "claim": "A 1961 object broke through Antarctic ice before flying away.",
          "category": "embellished sighting",
          "status": "UFO researcher Richard Dolan corrected the dramatic ice-emergence version.",
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          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
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    {
      "id": "theory:THS-016",
      "legacy_id": "THS-016",
      "kind": "theory",
      "title": "Marines investigating three pyramids",
      "display_title": "Marines investigating three pyramids",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-016",
      "summary": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
      "claim": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Altered Alaska exercise footage and natural peaks do not establish this mission.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
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      "sources": [
        {
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        },
        {
          "source_id": "source:849265619b00a2730188",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:aab6cfbc49cebebb9684",
          "role": "image reuse conditions",
          "supports_claim_truth": null
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      ],
      "visual": {
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        "role": "authentic source-specific context; not evidence of fringe claim",
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          "title": "Spartan Pegasus 2017 original official video frame, Alaska",
          "caption": "Frame at 00:11 from the original official Spartan Pegasus exercise video, filmed in Deadhorse, Alaska on 22 February 2017. The record’s linked fact-check identifies this source footage behind altered Antarctic-pyramid clips. This is Alaska, not Antarctica, and Army paratroopers, not Marines entering pyramids.",
          "credit": "Staff Sgt. Daniel Love / United States Army Alaska; DVIDS video 511224, VIRIN 170222-A-NC 569-510, 22 February 2017. Public domain.",
          "rights": "Public domain explicitly stated on exact DVIDS video page; credit and nonendorsement notice retained. Still only, no music/audio redistribution.",
          "source_url": "https://www.dvidshub.net/video/511224/spartan-pegasus-short-teaser",
          "rights_url": "https://www.dvidshub.net/about/copyright",
          "width": 1024,
          "height": 576,
          "fit": "contain",
          "visual_role": "authentic source-specific context; not evidence of fringe claim",
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          "source_manifest": "image-provenance-v14.json",
          "display_label": null,
          "source_limitations": "Exact source-video context, not a claim that this particular frame was the altered shot. Preserve original on-screen unit text.",
          "transformations": "Source video frame extracted at 00:11 for Spartan; full institutional still retained otherwise, proportional resize only.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "Public domain explicitly stated on exact DVIDS video page; credit and nonendorsement notice retained. Still only, no music/audio redistribution.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "sort_day": null,
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        "editorial_review_date_reported": "2026-10-28",
        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      },
      "provenance": {
        "input": "reader-data.json",
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          "id": "THS-016",
          "title": "Marines investigating three pyramids",
          "claim": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
          "category": "video hoax",
          "status": "Altered Alaska exercise footage and natural peaks do not establish this mission.",
          "counterevidence": "Altered Alaska exercise footage and natural peaks do not establish this mission.",
          "sources": [
            {
              "url": "https://leadstories.com/hoax-alert/2022/04/fact-check-marines-are-not-investigating-three-ancient-pyramids-in-antarctica.html",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://www.dvidshub.net/video/511224/spartan-pegasus-short-teaser",
              "role": "image reproduction provenance; not proof of a linked interpretation"
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            {
              "url": "https://www.dvidshub.net/about/copyright",
              "role": "image reuse conditions"
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          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
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          "summary": "Leaked video shows Marines entering newly discovered Antarctic pyramids.",
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            "title": "Spartan Pegasus 2017 original official video frame, Alaska",
            "caption": "Frame at 00:11 from the original official Spartan Pegasus exercise video, filmed in Deadhorse, Alaska on 22 February 2017. The record’s linked fact-check identifies this source footage behind altered Antarctic-pyramid clips. This is Alaska, not Antarctica, and Army paratroopers, not Marines entering pyramids.",
            "credit": "Staff Sgt. Daniel Love / United States Army Alaska; DVIDS video 511224, VIRIN 170222-A-NC 569-510, 22 February 2017. Public domain.",
            "rights": "Public domain explicitly stated on exact DVIDS video page; credit and nonendorsement notice retained. Still only, no music/audio redistribution.",
            "source_url": "https://www.dvidshub.net/video/511224/spartan-pegasus-short-teaser",
            "rights_url": "https://www.dvidshub.net/about/copyright",
            "width": 1024,
            "height": 576,
            "fit": "contain",
            "visual_role": "authentic source-specific context; not evidence of fringe claim",
            "sha256": "3f16c519dc588a7beddeb51acec0d705aeffd9996b15e64fdc5bf2a16b058d53",
            "source_manifest": "image-provenance-v14.json",
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            "source_limitations": "Exact source-video context, not a claim that this particular frame was the altered shot. Preserve original on-screen unit text.",
            "transformations": "Source video frame extracted at 00:11 for Spartan; full institutional still retained otherwise, proportional resize only.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
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      },
      "record_sha256": "abd830f52e994fcb966ef86ecab41876d6f69eb2017263d1e001ec11c2ccc141"
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    {
      "id": "theory:THS-017",
      "legacy_id": "THS-017",
      "kind": "theory",
      "title": "Artificial Antarctic pyramids",
      "display_title": "Artificial Antarctic pyramids",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-017",
      "summary": "Pyramid-shaped peaks were built by an ancient civilization.",
      "claim": "Pyramid-shaped peaks were built by an ancient civilization.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Pyramid-shaped mountain peaks are natural geological formations.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:b3537661266f4fabe03a",
          "role": "claim documentation or assessment",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:d42f5b497d3f76b64588",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:3aa18b8cf5eec20a2764",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic source-specific context; not evidence of fringe claim",
        "asset": {
          "src": "assets/v14/e8fbae846664-ferrar-labeled.jpg",
          "title": "Natural glacial horn at Ferrar Glacier, EO-1 scientific image",
          "caption": "NASA’s labeled Ferrar Glacier image identifies a natural glacial horn and arête. It illustrates the geological process that can produce pyramid-like peaks; this is not the viral Ellsworth Mountains peak or evidence of a built pyramid.",
          "credit": "NASA Earth Observatory / Jesse Allen and Robert Simmon, NASA EO-1 team.",
          "rights": "NASA factual informational/editorial media reuse; exact NASA image credit and data source checked.",
          "source_url": "https://science.nasa.gov/earth/earth-observatory/ferrar-glacier-antarctica-81463/",
          "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
          "width": 720,
          "height": 480,
          "fit": "contain",
          "visual_role": "authentic source-specific context; not evidence of fringe claim",
          "sha256": "e8fbae846664fa32195719573a9f8d0d840aff946d6893fbff88025516631911",
          "source_manifest": "image-provenance-v14.json",
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          "source_limitations": "Comparative process/location clearly labeled. Source has inconsistent February 2013 day metadata; caption intentionally omits day. Preserve labels and scale.",
          "transformations": "Source video frame extracted at 00:11 for Spartan; full institutional still retained otherwise, proportional resize only.",
          "original_exposure_status": null,
          "counts_as_exact_source_coverage": null
        },
        "reuse_notice": "NASA factual informational/editorial media reuse; exact NASA image credit and data source checked.",
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
        "artifact_date_text": null,
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
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      "provenance": {
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        "original_fields": {
          "id": "THS-017",
          "title": "Artificial Antarctic pyramids",
          "claim": "Pyramid-shaped peaks were built by an ancient civilization.",
          "category": "misidentification",
          "status": "Pyramid-shaped mountain peaks are natural geological formations.",
          "counterevidence": "Pyramid-shaped mountain peaks are natural geological formations.",
          "sources": [
            {
              "url": "https://politifact.com/factchecks/2022/apr/27/blog-posting/no-marines-arent-investigating-antarctica-pyramids/",
              "role": "claim documentation or assessment"
            },
            {
              "url": "https://science.nasa.gov/earth/earth-observatory/ferrar-glacier-antarctica-81463/",
              "role": "image reproduction provenance; not proof of a linked interpretation"
            },
            {
              "url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
              "role": "image reuse conditions"
            }
          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
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          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
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          "summary": "Pyramid-shaped peaks were built by an ancient civilization.",
          "reference_research_leads": {
            "reference_id": "t-pyramid",
            "items": [
              "Satellite images that went viral in 2016"
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            "status": "Research leads identified in the supplied draft; not independently authenticated evidence or a verified origin chain."
          },
          "display_image": {
            "src": "assets/v14/e8fbae846664-ferrar-labeled.jpg",
            "title": "Natural glacial horn at Ferrar Glacier, EO-1 scientific image",
            "caption": "NASA’s labeled Ferrar Glacier image identifies a natural glacial horn and arête. It illustrates the geological process that can produce pyramid-like peaks; this is not the viral Ellsworth Mountains peak or evidence of a built pyramid.",
            "credit": "NASA Earth Observatory / Jesse Allen and Robert Simmon, NASA EO-1 team.",
            "rights": "NASA factual informational/editorial media reuse; exact NASA image credit and data source checked.",
            "source_url": "https://science.nasa.gov/earth/earth-observatory/ferrar-glacier-antarctica-81463/",
            "rights_url": "https://www.nasa.gov/nasa-brand-center/images-and-media/",
            "width": 720,
            "height": 480,
            "fit": "contain",
            "visual_role": "authentic source-specific context; not evidence of fringe claim",
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            "source_limitations": "Comparative process/location clearly labeled. Source has inconsistent February 2013 day metadata; caption intentionally omits day. Preserve labels and scale.",
            "transformations": "Source video frame extracted at 00:11 for Spartan; full institutional still retained otherwise, proportional resize only.",
            "original_exposure_status": null,
            "counts_as_exact_source_coverage": null
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    {
      "id": "theory:THS-018",
      "legacy_id": "THS-018",
      "kind": "theory",
      "title": "Heat-emitting crystal orbs",
      "display_title": "Heat-emitting crystal orbs",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-018",
      "summary": "Ancient crystal spheres are awakening and causing Antarctic melting.",
      "claim": "Ancient crystal spheres are awakening and causing Antarctic melting.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No authenticated discovery; futuristic visuals are not physical evidence.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
        {
          "source_id": "source:b43a13bf18ca7ff08c3e",
          "role": "claim documentation or assessment",
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        }
      ],
      "visual": {
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        "role": "not_embedded",
        "asset": null,
        "reuse_notice": null,
        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
      },
      "dates": {
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        "review_date_basis": "inherited verification_date field; not newly verified by this export",
        "content_modified_at": null,
        "source_rechecked_at": null
      },
      "provenance": {
        "input": "reader-data.json",
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        "original_fields": {
          "id": "THS-018",
          "title": "Heat-emitting crystal orbs",
          "claim": "Ancient crystal spheres are awakening and causing Antarctic melting.",
          "category": "fabricated discovery",
          "status": "No authenticated discovery; futuristic visuals are not physical evidence.",
          "counterevidence": "No authenticated discovery; futuristic visuals are not physical evidence.",
          "sources": [
            {
              "url": "https://factchequeado.com/verificaciones/20260529/cientificos-descubierto-piramides-orbes-calientes-antartida/",
              "role": "claim documentation or assessment"
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          ],
          "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible.",
          "claim_family": "heat-emitting crystal orbs",
          "verification_date": "2026-10-28",
          "source_count": 1,
          "browse_topic": "Images, clips & hoaxes",
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          "label": "unverified",
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          "summary": "Ancient crystal spheres are awakening and causing Antarctic melting."
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      "record_sha256": "1436622d5429d8df74950d5ce6f2879ee658965fa6ccb11382582d18db414904"
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    {
      "id": "theory:THS-019",
      "legacy_id": "THS-019",
      "kind": "theory",
      "title": "Google Earth Antarctic kraken",
      "display_title": "Google Earth Antarctic kraken",
      "display_subtitle": null,
      "url": "theory-vault.html#THS-019",
      "summary": "A satellite image near Deception Island captured a huge tentacled animal.",
      "claim": "A satellite image near Deception Island captured a huge tentacled animal.",
      "topics": [
        "Images, clips & hoaxes"
      ],
      "assessment": {
        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "Object identified as rocks, not a verified organism.",
        "limitations": "Inclusion documents a claim; no independent truth inference from circulation. Category must remain visible."
      },
      "sources": [
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          "role": "claim documentation or assessment",
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        },
        {
          "source_id": "source:b2011643575127d42879",
          "role": "image reproduction provenance; not proof of a linked interpretation",
          "supports_claim_truth": null
        },
        {
          "source_id": "source:54895d592300bdd22f51",
          "role": "image reuse conditions",
          "supports_claim_truth": null
        }
      ],
      "visual": {
        "embedded": true,
        "role": "authentic geographic/scientific context; not claim evidence",
        "asset": {
          "src": "assets/v14/d80e1c3ded30-sail-rock.jpg",
          "title": "Sail Rock geological field photograph, published 2013",
          "caption": "A field photograph identified as Sail Rock in Kraus, Kurbatov and Yates’s 2013 geological study. Comparative rock-formation context for the satellite “kraken” story; not the viral Google Earth image or an independent match of its pixels.",
          "credit": "Stefan Kraus, Andrei Kurbatov and Martin Yates, Andean Geology 40(1), 2013, figure 2; via Wikimedia Commons. CC BY 4.0. Full frame retained; JPEG encoding.",
          "rights": "CC BY 4.0 verified both exact Commons file page and primary SciELO article footer license link. Credit authors and indicate extraction/resizing.",
          "source_url": "https://www.scielo.cl/scielo.php?pid=S0718-71062013000100001&script=sci_arttext",
          "rights_url": "https://creativecommons.org/licenses/by/4.0/",
          "width": 316,
          "height": 421,
          "fit": "contain",
          "visual_role": "authentic geographic/scientific context; not claim evidence",
          "sha256": "d80e1c3ded30992152af1b66f76676eabc9a38f9948b50853e5b302ecbe2da43",
          "source_manifest": "image-provenance-v14.json",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "claim": "Benevolent extraterrestrials inhabit near-surface Antarctic pods and avoid human contact.",
          "category": "exopolitics",
          "status": "Broadcast allegation, not a verified biological discovery.",
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      "summary": "A surviving covert organization uses Antarctic facilities and soul-splitting technology for off-world soldier missions.",
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
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        "limitations": "Image existence does not prove a linked claim. Consult image-specific captions and reuse conditions."
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          "status": "Sébastien Martin recovered-memory account; no authenticated program records.",
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              "url": "https://www.gaia.com/video/recovered-memories-reveal-super-soldier-program",
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      "url": "theory-vault.html#THX-004",
      "summary": "An Antarctic program manufactures light-soldier avatar bodies for consciousness transfer.",
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      "topics": [
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        "label": "unverified",
        "scope": "Editorial assessment of this proposition; not a numeric confidence score.",
        "text": "No independently authenticated evidence supplied; a published interview or assertion is not verification.",
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        "reuse_notice": null,
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          "caption": "NASA’s downward-looking Digital Mapping System photographed Vostok Station on 27 November 2013. This shows surface research facilities, not the lake beneath the ice, an NSA takeover or a space ark.",
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          "rights": "NASA imagery reusable for factual informational/editorial purposes under NASA media guidelines; exact source credit checked for third-party restrictions. No NASA endorsement.",
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      "last_http_checked_at": null
    }
  ],
  "relations": [
    {
      "id": "relation:04f569318d8377d53116",
      "from_id": "theory:HIST-05",
      "to_id": "history:artifact-feature-highjump-aircraft",
      "predicate": "related_context",
      "why": "The expedition aircraft frame supplies historical operational context, not evidence of combat with an advanced enemy.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:053da7629b25077b6e4a",
      "from_id": "theory:MOD-019",
      "to_id": "theory:THS-008",
      "predicate": "related_context",
      "why": "Both concern how Antarctic governance is represented. Consult the actual Treaty rather than infer a blanket ban or automatic expiry.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:0d9e5ed58e61f801879f",
      "from_id": "theory:THS-011",
      "to_id": "history:artifact-3dfec71cbe98",
      "predicate": "related_context",
      "why": "A historical Tartary regional label does not establish the claimed Antarctic reset; compare what this particular map actually depicts.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:1202c109a01f8ab2f3e4",
      "from_id": "history:artifact-3dfec71cbe98",
      "to_id": "theory:THS-011",
      "predicate": "related_context",
      "why": "A historical Tartary regional label does not establish the claimed Antarctic reset; compare what this particular map actually depicts.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:20961ba86a76ed133f43",
      "from_id": "theory:HIST-13",
      "to_id": "history:artifact-mercator-1569",
      "predicate": "related_context",
      "why": "Inspect conjectural southern land on an actual 1569 world map; the drawing alone does not establish a lost survey tradition.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:28b35c694f17919fd325",
      "from_id": "theory:MOD-009",
      "to_id": "theory:GUIDE-SATELLITE",
      "predicate": "related_context",
      "why": "Use the imagery-provenance method to investigate a claimed feature before assigning an artificial or concealed origin.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:322e14cb8295089345af",
      "from_id": "theory:HIST-15",
      "to_id": "history:artifact-ac67026bdec2",
      "predicate": "related_context",
      "why": "This is the exact historical fragment discussed by the Piri Reis interpretation; artifact provenance and the claimed Antarctic identification are separate questions.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:3309abc1775e1358ec16",
      "from_id": "theory:THS-007",
      "to_id": "theory:THS-006",
      "predicate": "related_context",
      "why": "One proposes a boundary geometry; the other adds hidden lands. They are related propositions, not interchangeable evidence.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:340d3f61404415349cfb",
      "from_id": "history:artifact-20a39105f356",
      "to_id": "theory:ADD-A015",
      "predicate": "related_context",
      "why": "An identified space photograph is a relevant original for examining the claim that genuine Antarctic photographs from space do not exist.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:384aca59854b1dba8259",
      "from_id": "theory:HIST-08",
      "to_id": "theory:HIST-09",
      "predicate": "related_context",
      "why": "Hollow-Earth narratives often connect to the circulated diary story; neither claim independently authenticates the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:38f1e8ca6fdaffa61457",
      "from_id": "history:artifact-feature-fine1534",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "This different Fine map is useful for an edition comparison, not interchangeable proof for the 1531 map claim.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:3db423b1b98de093682a",
      "from_id": "history:artifact-feature-byrd-broadcast",
      "to_id": "theory:HIST-08",
      "predicate": "related_context",
      "why": "The recording is a source to inspect when quotations are attributed to Byrd. No unverified quotation is supplied as proof of a polar opening.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:52a8b59171c2f027d75f",
      "from_id": "theory:HIST-01",
      "to_id": "theory:HIST-05",
      "predicate": "related_context",
      "why": "The alleged battle and hidden-base story are linked narratives. Separate the claims and inspect their independent source requirements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5627f5823190fd88dfa5",
      "from_id": "history:artifact-ac67026bdec2",
      "to_id": "theory:HIST-15",
      "predicate": "related_context",
      "why": "This is the exact historical fragment discussed by the Piri Reis interpretation; artifact provenance and the claimed Antarctic identification are separate questions.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5658d338abeaa2a443e4",
      "from_id": "theory:HIST-08",
      "to_id": "history:artifact-feature-byrd-broadcast",
      "predicate": "related_context",
      "why": "The recording is a source to inspect when quotations are attributed to Byrd. No unverified quotation is supplied as proof of a polar opening.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:56c8819ea439f250f01f",
      "from_id": "theory:GUIDE-UNDERICE",
      "to_id": "theory:HIST-17",
      "predicate": "related_context",
      "why": "Modern bed-elevation models offer comparison material; they do not demonstrate that an early cartographer had equivalent measurements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:58271d50e481d72c5902",
      "from_id": "history:artifact-mercator-1569",
      "to_id": "theory:HIST-13",
      "predicate": "related_context",
      "why": "Inspect conjectural southern land on an actual 1569 world map; the drawing alone does not establish a lost survey tradition.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:58eb87ddc4f1af95580f",
      "from_id": "theory:HIST-09",
      "to_id": "history:artifact-feature-byrd-broadcast",
      "predicate": "related_context",
      "why": "Compare attributed stories with an actual archival recording; it does not authenticate the circulated secret diary.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5b2d79235c0dda734455",
      "from_id": "history:artifact-e5ecd08f9e21",
      "to_id": "theory:ADD-A014",
      "predicate": "related_context",
      "why": "The diary provides expedition context; material-failure hypotheses still require their own physical and historical evidence.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:5ca4fd25eb96904c9c3f",
      "from_id": "theory:HIST-17",
      "to_id": "theory:GUIDE-UNDERICE",
      "predicate": "related_context",
      "why": "Modern bed-elevation models offer comparison material; they do not demonstrate that an early cartographer had equivalent measurements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:6446a7c7a8b1cb75f41f",
      "from_id": "history:artifact-feature-byrd-broadcast",
      "to_id": "theory:HIST-09",
      "predicate": "related_context",
      "why": "Compare attributed stories with an actual archival recording; it does not authenticate the circulated secret diary.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:65f8f909c68a3ff9006f",
      "from_id": "theory:THS-007",
      "to_id": "history:artifact-feature-gleason1892",
      "predicate": "related_context",
      "why": "This authentic flat-Earth advocacy map is relevant to the ice-wall model; its existence does not establish the model’s accuracy.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:683effccd09154562acc",
      "from_id": "theory:HIST-16",
      "to_id": "history:artifact-11a6e51e04f7",
      "predicate": "related_context",
      "why": "Compare the claim with Fine’s double-heart map and the specific BnF impression, rather than substituting a different edition.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:718fe89991b67bc75006",
      "from_id": "theory:HIST-16",
      "to_id": "theory:HIST-15",
      "predicate": "related_context",
      "why": "Both infer ancient Antarctic knowledge from old maps, but they concern different originals and must be tested separately.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:78e8c2dc167a0ff49ef8",
      "from_id": "theory:HIST-16",
      "to_id": "theory:HIST-17",
      "predicate": "related_context",
      "why": "Compare the logic used to identify southern land across different maps, dates and editions.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:84b8064b7fbbc0992d65",
      "from_id": "theory:HIST-12",
      "to_id": "theory:HIST-11",
      "predicate": "related_context",
      "why": "The lost-civilization claim and proposed rapid displacement mechanism are distinct hypotheses; accepting one would not establish the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:85f56def784bb13c7610",
      "from_id": "theory:HIST-17",
      "to_id": "history:artifact-buache-bnf1754",
      "predicate": "related_context",
      "why": "The 1754 southern chart provides a concrete original for comparison. Keep its date and state distinct from other Buache maps and modern bedrock models.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:8b4aa900e2735ccf276b",
      "from_id": "theory:THS-006",
      "to_id": "theory:THS-007",
      "predicate": "related_context",
      "why": "One proposes a boundary geometry; the other adds hidden lands. They are related propositions, not interchangeable evidence.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:8bf6297bebf412b16494",
      "from_id": "theory:HIST-26",
      "to_id": "history:artifact-e5ecd08f9e21",
      "predicate": "related_context",
      "why": "Scott’s final diary is a primary expedition record to consult when assessing later sabotage interpretations; it does not by itself establish them.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:8e07592a95567c21151c",
      "from_id": "history:artifact-11a6e51e04f7",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "Compare the claim with Fine’s double-heart map and the specific BnF impression, rather than substituting a different edition.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:9331ccf2c8a829cb4a82",
      "from_id": "history:artifact-ddbb4ac9d167",
      "to_id": "theory:HIST-13",
      "predicate": "related_context",
      "why": "Ortelius’s 1570 map is a specific original for testing ancient-map interpretations, not an independently verified Antarctic survey.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:974721e12dbfbaf35c08",
      "from_id": "theory:HIST-13",
      "to_id": "history:artifact-ddbb4ac9d167",
      "predicate": "related_context",
      "why": "Ortelius’s 1570 map is a specific original for testing ancient-map interpretations, not an independently verified Antarctic survey.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:997f7dd67c950c15d481",
      "from_id": "theory:THS-008",
      "to_id": "theory:MOD-019",
      "predicate": "related_context",
      "why": "Both concern how Antarctic governance is represented. Consult the actual Treaty rather than infer a blanket ban or automatic expiry.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:9f3e102eaa1f6839253b",
      "from_id": "history:artifact-feature-highjump-aircraft",
      "to_id": "theory:HIST-05",
      "predicate": "related_context",
      "why": "The expedition aircraft frame supplies historical operational context, not evidence of combat with an advanced enemy.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:a15e555c05b4962860f0",
      "from_id": "theory:THS-011",
      "to_id": "history:artifact-2e6fe94adde5",
      "predicate": "related_context",
      "why": "Compare another dated Asian regional map rather than treating every use of Tartaria as proof of the same global theory.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:ac0fb256410e1402c5a2",
      "from_id": "history:artifact-feature-ross1847",
      "to_id": "theory:THS-007",
      "predicate": "related_context",
      "why": "Ross’s chart records southern exploration and the barrier encountered by ships, not a surveyed world-encircling boundary.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b00ba88cfa6e9fcc6397",
      "from_id": "history:artifact-feature-gleason1892",
      "to_id": "theory:THS-006",
      "predicate": "related_context",
      "why": "Compare the printed map with the separate claim of additional lands. The archival map is not a survey beyond its rim.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b0e8c13d17f31d2ced9b",
      "from_id": "history:artifact-buache-bnf1754",
      "to_id": "theory:HIST-17",
      "predicate": "related_context",
      "why": "The 1754 southern chart provides a concrete original for comparison. Keep its date and state distinct from other Buache maps and modern bedrock models.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b696c7c6a4d1b52e32f6",
      "from_id": "theory:HIST-09",
      "to_id": "theory:HIST-08",
      "predicate": "related_context",
      "why": "Hollow-Earth narratives often connect to the circulated diary story; neither claim independently authenticates the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b6d676ab0b1331292e5d",
      "from_id": "theory:HIST-17",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "Compare the logic used to identify southern land across different maps, dates and editions.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:b962a39f68e929ed3719",
      "from_id": "theory:GUIDE-SATELLITE",
      "to_id": "theory:MOD-009",
      "predicate": "related_context",
      "why": "Use the imagery-provenance method to investigate a claimed feature before assigning an artificial or concealed origin.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:bc6241ece0b70178e9d9",
      "from_id": "history:artifact-2e6fe94adde5",
      "to_id": "theory:THS-011",
      "predicate": "related_context",
      "why": "Compare another dated Asian regional map rather than treating every use of Tartaria as proof of the same global theory.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c031a533140d76bb0845",
      "from_id": "theory:THS-006",
      "to_id": "history:artifact-feature-gleason1892",
      "predicate": "related_context",
      "why": "Compare the printed map with the separate claim of additional lands. The archival map is not a survey beyond its rim.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c5c76b022eceb8911d5b",
      "from_id": "theory:HIST-05",
      "to_id": "history:artifact-feature-highjump-base",
      "predicate": "related_context",
      "why": "A documented Highjump base frame establishes expedition activity, not the alleged secret battle.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c659af1bd05796e026f3",
      "from_id": "theory:HIST-05",
      "to_id": "theory:HIST-01",
      "predicate": "related_context",
      "why": "The alleged battle and hidden-base story are linked narratives. Separate the claims and inspect their independent source requirements.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:c8e723381a037618091c",
      "from_id": "theory:HIST-15",
      "to_id": "theory:HIST-16",
      "predicate": "related_context",
      "why": "Both infer ancient Antarctic knowledge from old maps, but they concern different originals and must be tested separately.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:d5a4f895dddab6b3998f",
      "from_id": "theory:HIST-16",
      "to_id": "history:artifact-feature-fine1534",
      "predicate": "related_context",
      "why": "This different Fine map is useful for an edition comparison, not interchangeable proof for the 1531 map claim.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:d7d609bad9411b6795af",
      "from_id": "history:artifact-e5ecd08f9e21",
      "to_id": "theory:HIST-26",
      "predicate": "related_context",
      "why": "Scott’s final diary is a primary expedition record to consult when assessing later sabotage interpretations; it does not by itself establish them.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:d824ffc6a2b646a03f97",
      "from_id": "history:artifact-feature-gleason1892",
      "to_id": "theory:THS-007",
      "predicate": "related_context",
      "why": "This authentic flat-Earth advocacy map is relevant to the ice-wall model; its existence does not establish the model’s accuracy.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:da0be0855d87d1adb36a",
      "from_id": "theory:GUIDE-SATELLITE",
      "to_id": "history:artifact-20a39105f356",
      "predicate": "related_context",
      "why": "Distinguish a specific Apollo photograph from satellite mosaics, processing gaps and screenshots of unknown provenance.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:dbf802999e3360dfd3d2",
      "from_id": "theory:HIST-11",
      "to_id": "theory:HIST-12",
      "predicate": "related_context",
      "why": "The lost-civilization claim and proposed rapid displacement mechanism are distinct hypotheses; accepting one would not establish the other.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:dd834db89db7157d4491",
      "from_id": "history:artifact-feature-highjump-base",
      "to_id": "theory:HIST-05",
      "predicate": "related_context",
      "why": "A documented Highjump base frame establishes expedition activity, not the alleged secret battle.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:e3a29f7829e05f63f78a",
      "from_id": "theory:ADD-A015",
      "to_id": "history:artifact-20a39105f356",
      "predicate": "related_context",
      "why": "An identified space photograph is a relevant original for examining the claim that genuine Antarctic photographs from space do not exist.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:e8eb31c4fd00b57eda91",
      "from_id": "theory:THS-007",
      "to_id": "history:artifact-feature-ross1847",
      "predicate": "related_context",
      "why": "Ross’s chart records southern exploration and the barrier encountered by ships, not a surveyed world-encircling boundary.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:f532b23e1d0844ee2052",
      "from_id": "history:artifact-20a39105f356",
      "to_id": "theory:GUIDE-SATELLITE",
      "predicate": "related_context",
      "why": "Distinguish a specific Apollo photograph from satellite mosaics, processing gaps and screenshots of unknown provenance.",
      "editorial_target_type": "theory / research guide",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    },
    {
      "id": "relation:f99058fe494c180aa565",
      "from_id": "theory:ADD-A014",
      "to_id": "history:artifact-e5ecd08f9e21",
      "predicate": "related_context",
      "why": "The diary provides expedition context; material-failure hypotheses still require their own physical and historical evidence.",
      "editorial_target_type": "historical record",
      "is_corroboration": false,
      "reviewed_at": null,
      "provenance": "entry-relations.json"
    }
  ],
  "rights": "Record/image rights are per source. This dataset does not grant blanket rights to linked or embedded third-party material."
}
