{
  "schema": 1,
  "pack_id": "field-sketch-studio",
  "review_date": "2026-10-02",
  "sources": [
    {
      "id": "fss-nps-dawn",
      "title": "Early Riser At The Amphitheater",
      "publisher": "U.S. National Park Service / NPS Gallery",
      "url": "https://www.nps.gov/npgallery/Asset/fd73e236-1dd8-b71b-0b9b-c804318b3e41",
      "rights": {
        "Constraint": "Public domain",
        "Explanation": null,
        "GrantingRights": "Unknown"
      },
      "credit": "Photographed by Brian B. Roanhorse Oct 30, 2015.",
      "evidence_class": "reference",
      "local_asset": "references/dawn.webp",
      "sha256": "477b03f46c3a273ef1e18e74a25f15021d68945131b51130bd8d507d2ca4bf0f",
      "bytes": 49906,
      "source_original_pixels": [
        5100,
        1626
      ],
      "derivative_width": 900,
      "baseline_derivative": "website/public/assets/bryce-dawn-900.webp",
      "rights_verified_from": "Previously accepted individual metadata retained 2026-09-28; re-read 2026-10-02. Live Gallery pages unavailable through web retrieval.",
      "limits": "Archival photograph, not live; no new crop, enlargement or retouching. Source date qualifications in sources.html. No EXIF/GPS in derivative."
    },
    {
      "id": "fss-nps-tree",
      "title": "A tree grows at Sunrise Point",
      "publisher": "U.S. National Park Service / NPS Gallery",
      "url": "https://www.nps.gov/npgallery/Asset/40653d22-fd4b-4d2c-9391-d005892e00dc",
      "rights": {
        "Constraint": "Public domain",
        "Explanation": null,
        "GrantingRights": "Full"
      },
      "credit": "Heather Williamson",
      "evidence_class": "reference",
      "local_asset": "references/tree.webp",
      "sha256": "7b2841237889c1ea25fb9543f9f42556e138ab77e357eb1b2dbe41d16afaae9b",
      "bytes": 109630,
      "source_original_pixels": [
        3716,
        2787
      ],
      "derivative_width": 900,
      "baseline_derivative": "website/public/assets/sunrise-tree-900.webp",
      "rights_verified_from": "Previously accepted individual metadata retained 2026-09-28; re-read 2026-10-02. Live Gallery pages unavailable through web retrieval.",
      "limits": "Archival photograph, not live; no new crop, enlargement or retouching. Source date qualifications in sources.html. No EXIF/GPS in derivative."
    },
    {
      "id": "fss-nps-thor",
      "title": "Thors Hammer at sunrise",
      "publisher": "U.S. National Park Service / NPS Gallery",
      "url": "https://www.nps.gov/npgallery/Asset/6332472a-155d-451f-6738-af9012580dbf",
      "rights": {
        "Constraint": "Public domain",
        "Explanation": null,
        "GrantingRights": "Full"
      },
      "credit": "NPS Gallery; individual photographer not recorded",
      "evidence_class": "reference",
      "local_asset": "references/pillar.webp",
      "sha256": "7833185129d427102843670a11fbeda78ed68a8e678fa9d3efe03a3f28d91f72",
      "bytes": 61516,
      "source_original_pixels": [
        1857,
        1479
      ],
      "derivative_width": 900,
      "baseline_derivative": "website/public/assets/thors-hammer-900.webp",
      "rights_verified_from": "Previously accepted individual metadata retained 2026-09-28; re-read 2026-10-02. Live Gallery pages unavailable through web retrieval.",
      "limits": "Archival photograph, not live; no new crop, enlargement or retouching. Source date qualifications in sources.html. No EXIF/GPS in derivative."
    },
    {
      "id": "fss-nps-hoodoos",
      "title": "Hoodoos",
      "publisher": "National Park Service, Bryce Canyon National Park",
      "url": "https://www.nps.gov/brca/learn/nature/hoodoos.htm",
      "updated": "2021-09-04",
      "accessed": "2026-10-02",
      "supported_claims": [
        "Broad context: hoodoo shapes vary; their rock can project or indent."
      ],
      "limits": "Not a license for other media on this page. No source diagram copied; not used to infer surveyed dimensions."
    },
    {
      "id": "fss-original",
      "title": "Twelve original Field Sketch Studio compositions",
      "publisher": "BCC local asset creation lane",
      "created": "2026-10-02",
      "evidence_class": "illustrative",
      "rights": "Original code and vector artwork prepared for BCC; no separate public license declared.",
      "limits": "Hand-authored drawing-unit compositions; no field observations, physical scale, hidden geometry or species occurrence inferred."
    }
  ]
}