{
  "tool": "OpenAI built-in image generation",
  "imageFile": "william-a-young-illustration.png",
  "createdDate": "2026-09-07",
  "revisedDate": "2026-09-08",
  "referenceRole": "Targeted edit of the previous AI illustration; no new period photograph or direct render supplied in this edit",
  "referenceFiles": [
    "william-a-young-illustration.png"
  ],
  "derivedFrom": {
    "imageSha256": "d9f0061fee0616474a5a52fef9135e04da788bc372c8b3b94a0c1488b7bbf2a6",
    "previousGenerationProvenance": {
      "tool": "Built-in image generation",
      "imageFile": "william-a-young-illustration.png",
      "createdDate": "2026-09-07",
      "referenceRole": "Newly authored GLB three-quarter render used as visual reference",
      "referenceFile": "william-a-young-model-three-quarter.png",
      "historicalStatus": "Supplemental interpretive artwork, not documentary evidence or an exact GLB render",
      "generationPrompt": "Create a refined, highly detailed maritime reconstruction illustration of William A. Young for Michigan Lake Depths. Use the attached newly authored 3D model render as the principal reference for hull proportions, number and placement of masts, cabins, funnel and working fittings. Selected era: Later two-mast towing form. Preserve its distinctive geometry and sensible period scale. A calm Lake Huron morning with soft blue sky, low wispy clouds, quiet blue-green water and a very distant tree-lined shore. Gentle early light. The ship lies quietly at anchor with bare spars and neatly stowed canvas, no deployed sails. Show the complete intact vessel in an elegant three-quarter view, afloat at a plausible waterline, bow to the left, with comfortable margin around all spars. The underwater hull is naturally hidden by lake water. Museum-quality realistic painted illustration, detailed wood planking, rigging where present, restrained historically plausible color, natural light and convincing water. Landscape 3:2 composition. No modern shoreline structures, no logos, no map pins, no text, no titles, no fake archival border. Do not create a studio model standing on a base. This is openly interpretive supplemental artwork, not documentary evidence: weather, light and distant shore are artistic choices, not recorded loss-day circumstances. Do not invent additional masts, funnels, superstructure or deployed sails absent from the reference."
    }
  },
  "historicalStatus": "AI-generated interpretive artwork; not documentary evidence or an exact GLB render",
  "generationPrompt": "Edit the supplied AI interpretive ship illustration with a narrow correction. Remove the two stray yellowish thin rods sticking out sideways/forward from the near bow below the bowsprit. Preserve the one real centerline bowsprit, its rigging stays, anchor, windlass, hull, three bare masts and deck layout. No disconnected or unexplained rods. Preserve framing, aspect ratio, lighting and all unmentioned details. Keep deck winches as squat transverse rope drums with solid flanges, never barrels. No text, no lettering, no name boards, no guns, no weapons, no cannon, no watermark. No extra masts or floating parts. Do not add modern equipment. This remains an interpretive illustration, not historical photographic evidence.",
  "revisionReason": "Remove the two stray yellowish thin rods sticking out sideways/forward from the near bow below the bowsprit. Preserve the one real centerline bowsprit, its rigging stays, anchor, windlass, hull, three bare masts and deck layout. No disconnected or unexplained rods.",
  "imageSha256": "b2484664d9d18c021305ce4776c9006a7a6ab089f27b0d2fdd50e05484ea3d9d",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "regenerated",
    "imageSha256": "b2484664d9d18c021305ce4776c9006a7a6ab089f27b0d2fdd50e05484ea3d9d",
    "observations": "Four native-pixel crops inspected. No weapons, garbled lettering, material mismatch, added masts, disconnected fittings or modern equipment observed. Interpretive details and background scenery are not documentary evidence."
  },
  "referenceFile": "william-a-young-illustration.png"
}