{
  "schema": "qurmmius.proof-manifest.v1",
  "proof_id": "proof-wce-administration-1893-v1",
  "product": "EraWeaver",
  "scene_id": "wce-administration",
  "issued_at": "2026-09-25T17:30:00Z",
  "status": "review-required",
  "subject": {
    "title": "Administration Building, World's Columbian Exposition, 1893",
    "claim": "An AI-assisted, walkable interpretive scene assembled from cited archival photographs and an approximate Qurmmius Palimpsest anchor.",
    "claim_type": "interpretive-reconstruction"
  },
  "chain": [
    {
      "stage": "source",
      "label": "Archival source set",
      "status": "cited",
      "inputs": [
        "/wce-source/manifest.json",
        "https://www.loc.gov/pictures/item/2017651056/",
        "https://www.loc.gov/pictures/item/2021636190/",
        "https://www.loc.gov/pictures/item/2021636191/",
        "https://www.loc.gov/pictures/item/2024635970/",
        "https://commons.wikimedia.org/wiki/File:World%27s_Columbian_Exposition_lantern_slides,_Administration_Building_from_the_East_End_of_Basin_(NBY_8810).jpg",
        "https://commons.wikimedia.org/wiki/File:World%27s_Columbian_Exposition_lantern_slides,_Administration_Building_from_the_East_End_of_Basin_(NBY_8811).jpg",
        "https://commons.wikimedia.org/wiki/File:The_Administration_building,_World%27s_Fair,_Chicago,_U.S.A,_by_Strohmeyer_%26_Wyman.jpg"
      ],
      "input_count": 24,
      "notes": "The promoted candidate uses the 24 primary derivatives listed in wce-source/manifest.json, including three documented public-domain research candidates from Wikimedia Commons/Newberry/NYPL records. Preserve item-level citations and keep commercial-rights review pending before redistribution."
    },
    {
      "stage": "restoration",
      "label": "Image restoration and sky inference",
      "status": "ai-assisted",
      "method": "Multi-view restoration candidate with inferred sky pixels",
      "confidence": 0.64,
      "notes": "Generated detail is not historical pixel recovery. Original source photographs remain unchanged."
    },
    {
      "stage": "reconstruction",
      "label": "Qurmmius local reconstruction",
      "status": "review-required",
      "method": "SIFT feature triangulation plus bounded image-derived depth proxy",
      "asset": "/splats/wce-administration.ply",
      "confidence": 0.497,
      "quality": {
        "vertex_count": 2099,
        "total_candidate_matches": 8920,
        "triangulated_inliers": 2099,
        "successful_view_pairs": 58
      },
      "notes": "Full 24-view primary-batch all-pair SIFT run promoted on 2026-09-25. The current PLY is a reconstruction hypothesis, not a calibrated survey or exact historical geometry."
    },
    {
      "stage": "dense-mvs",
      "label": "Qurmmius local CUDA dense multi-view surface",
      "status": "prior-reference-review-only",
      "method": "CUDA PatchMatch stereo + geometric fusion + Poisson meshing",
      "asset": "/eraweaver/scene/1893-wce/generated/wce-administration-dense-mvs.glb",
      "ply_asset": "/splats/wce-administration-dense-mvs.ply",
      "source_views": [
        "administration-agriculture-jackson-1893.png",
        "administration-from-agriculture-building-1893.png",
        "administration-building-chicago-world-fair-1893.png",
        "administration-southeast-jackson-1893.png"
      ],
      "fused_points": 41104,
      "mesh_vertices": 151811,
      "mesh_triangles": 302805,
      "metric_scale": false,
      "notes": "This dense surface predates the current 24-view candidate batch and is retained only for comparison. The current batch did not produce a valid fused/meshed dense handoff, so this artifact is not promoted as current evidence."
    },
    {
      "stage": "spatial",
      "label": "Qurmmius Palimpsest spatial alignment",
      "status": "approximate",
      "asset": "/eraweaver/scene/1893-wce/palimpsest-layer.geojson",
      "anchor": {
        "latitude": 41.77959801,
        "longitude": -87.5798960788,
        "uncertainty_meters": null,
        "provisional_display_radius_meters": 180
      },
      "confidence": 0.45,
      "notes": "Official City of Chicago CPD_Park_Art GIS point for the present Statue of the Republic; the Park District identifies it as installed on the former Administration Building site. The GIS source does not publish horizontal accuracy; 180 m is a provisional display radius, not a measured error bound. This is not a surveyed historic footprint; scene alignment remains pending."
    },
    {
      "stage": "presentation",
      "label": "EraWeaver scene presentation",
      "status": "live-review-preview",
      "asset": "/eraweaver/scene/1893-wce/",
      "method": "Web viewer, optional WebXR, evidence hotspots, and cited derived visual layers",
      "notes": "Presentation controls do not convert interpretive output into an original photograph or verified survey."
    }
  ],
  "evidence_zones": [
    {
      "id": "administration-building-footprint",
      "label": "Administration Building footprint (approximate)",
      "confidence": 0.45,
      "source_photos": [
        "Photo #1 (LOC opening day)",
        "Photo #3 (LOC exterior)",
        "Photo #5 (LOC stereograph)"
      ],
      "source": "/data/evidence-zones.json",
      "status": "review-required"
    },
    {
      "id": "dome",
      "label": "Central dome",
      "confidence": 0.8,
      "source_photos": [
        "loc-93506477",
        "loc-2016650686",
        "loc-2024635970"
      ],
      "source": "/data/hotspots.json",
      "status": "interpretive-anchor"
    },
    {
      "id": "grand-basin-edge",
      "label": "Grand Basin edge",
      "confidence": 0.62,
      "source_photos": [
        "loc-93506477",
        "loc-2024635970"
      ],
      "source": "/data/hotspots.json",
      "status": "interpretive-anchor"
    }
  ],
  "approvals": [
    {
      "role": "source-rights-review",
      "status": "pending",
      "required_before": "public-commercial-use"
    },
    {
      "role": "historical-review",
      "status": "pending",
      "required_before": "historical-accuracy-claim"
    },
    {
      "role": "spatial-review",
      "status": "pending",
      "required_before": "survey-grade-geospatial-claim"
    }
  ],
  "limitations": [
    "AI-generated pixels and inferred geometry are clearly labeled as interpretive.",
    "The Qurmmius Palimpsest anchor is approximate and carries an uncertainty radius.",
    "A verification receipt proves manifest integrity and review state, not historical truth."
  ],
  "integrity": {
    "algorithm": "SHA-256",
    "canonicalization": "sorted-json",
    "content_hash": "f64e655795e17ffa8d7ac9b3fc58410861c4b4546b65c43a3d7dbd9e28179841"
  }
}