{
  "tool": "OpenAI built-in image generation",
  "imageFile": "eb-allen-illustration.png",
  "createdDate": "2026-09-08",
  "revisedDate": "2026-09-08",
  "referenceRole": "Revised model render",
  "referenceFile": "eb-allen-model-three-quarter.png",
  "referenceFiles": [
    "eb-allen-model-three-quarter.png"
  ],
  "historicalStatus": "AI-generated interpretive artwork; not documentary evidence or an exact GLB render",
  "generationPrompt": "E.B.Allen wooden canal schooner1864–1871. Exactly TWO masts, two gaff principal sails and two triangular headsails. FLAT closed stern transom with modest24degree rake, not rounded counter. Small low cabin with three modest side ports, wheel and binnacle abaft it. No rooftop promenade. Tree-lined Lake Huron horizon under soft overcast light with gently filled sails. No exaggerated rudder plank or loose projecting rods. Use the supplied GLB render as primary geometry reference, preserving complete silhouette, proportions, all mastheads, exact number of masts/funnels, cabin and deck fittings. Landscape full ship three-quarter view, detailed interpretive museum historical scene with lake background, plausible period construction. No text, no lettering, no name boards, no guns, no weapons, no cannon, no watermark. Deck windlasses are short transverse winch drums wound with rope, not gun barrels. No floating parts or extra masts. No wood grain on steel or iron; no orange rust on wooden hulls. No modern electronics or synthetic yellow lines. No invented ships.",
  "imageSha256": "fa72e1a81da96f0466601cfb22b09b8ac3bf96eca277f444632242d1df57d78a",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "regenerated",
    "imageSha256": "fa72e1a81da96f0466601cfb22b09b8ac3bf96eca277f444632242d1df57d78a",
    "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."
  }
}