{
  "tool": "OpenAI built-in image generation",
  "imageFile": "william-peter-thew-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-peter-thew-illustration.png"
  ],
  "derivedFrom": {
    "imageSha256": "b5c569b49f6970ab9d6edb8fb163b63ee52ff9fce665de6efa1e8c9ded2c0452",
    "previousGenerationProvenance": {
      "tool": "Built-in image generation",
      "imageFile": "william-peter-thew-illustration.png",
      "createdDate": "2026-09-07",
      "referenceRole": "Newly authored GLB three-quarter render used as visual reference",
      "referenceFile": "william-peter-thew-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 Peter Thew 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: Photographed lumber-carrying career form. Preserve its distinctive geometry and sensible period scale. A rainy working day on Lake Huron: overcast silver-gray sky, visible fine diagonal rain streaks, wet deck and timber catching subdued light, gently choppy steel-green water, very distant forested shoreline receding in rain. The intact ship remains fully readable and operates normally. No collision, distress, damage or sinking. 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 orange rust streaks from the wooden light grey topsides and cabin. Show painted horizontal wooden planking with restrained grey wear, not rusty metal. Preserve hull form, two bare masts, funnel, bow and aft houses, lumber load, rain and water exactly. 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 orange rust streaks from the wooden light grey topsides and cabin. Show painted horizontal wooden planking with restrained grey wear, not rusty metal. Preserve hull form, two bare masts, funnel, bow and aft houses, lumber load, rain and water exactly.",
  "imageSha256": "c2d3565e4d406698f4fb731b671aabf1ef9ebc157dc6e58199e14ce59492a8f6",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "regenerated",
    "imageSha256": "c2d3565e4d406698f4fb731b671aabf1ef9ebc157dc6e58199e14ce59492a8f6",
    "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-peter-thew-illustration.png"
}