{
  "tool": "OpenAI built-in image generation",
  "imageFile": "uarda-illustration.png",
  "createdDate": "2026-09-08",
  "revisedDate": "2026-09-08",
  "referenceRole": "Revised model render and own-vessel historical photograph",
  "referenceFile": "uarda-model-three-quarter.png",
  "referenceFiles": [
    "uarda-model-three-quarter.png",
    "Historical Uarda photograph from Baillod; exact input filename not retained in the generation result"
  ],
  "historicalStatus": "AI-generated interpretive artwork; not documentary evidence or an exact GLB render",
  "generationPrompt": "Historical-scene illustration for a museum reconstruction page. Use the supplied newly revised model render as the PRIMARY geometry reference. The second historical photograph supports the later passenger-excursion arrangement only. Render Uarda on a calm Keweenaw lake in clear summer light, entire vessel and both mastheads in landscape frame. Faithfully keep the 95.3 ft long, 17.5 ft beam iron hull proportions; enclosed forward part of main deck and OPEN aft main deck behind light railings; upper deck has a canopy over its aft two-thirds on slender stanchions; arched-window forward pilothouse and open railed bridge above; one tall narrow black funnel clearly above canopy; exactly TWO thin pole masts, no sails; one boat resting on canopy supports with davits. Iron hull is smooth painted metal with restrained plating seams, no wood grain on iron. Timber is confined to decking and furnishings. Plain off-white hull, light houses, grey roof. Photo is evidence of arrangement, not an instruction to copy nameboard or crowded passengers. Deck machinery is compact winch drums, NOT weapons. Period forested low shore in distance. No text, no lettering, no name boards, no guns, no weapons, no cannon, no watermark. No extra decks or stacks, no unsupported or floating fittings, no modern gear. Supplemental interpretive artwork, no exactness claim.",
  "imageSha256": "03e0c9f297c69ad3118fab8ad8bc7bba532deac586c96dea8a21faa7ba6aea0e",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "regenerated",
    "imageSha256": "03e0c9f297c69ad3118fab8ad8bc7bba532deac586c96dea8a21faa7ba6aea0e",
    "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."
  }
}