{
  "tool": "Built-in image generation",
  "imageFile": "yosemite-illustration.png",
  "createdDate": "2026-09-08",
  "referenceRole": "Newly authored GLB three-quarter render used as visual reference",
  "referenceFile": "yosemite-model-three-quarter.png",
  "historicalStatus": "Supplemental interpretive artwork, not documentary evidence or an exact GLB render",
  "generationPrompt": "Create one detailed, photorealistic museum-quality maritime reconstruction illustration, landscape 3:2, using the attached newly authored 3D model render as the principal vessel shape reference. Show the entire original working ship afloat on Lake Superior, three-quarter view, realistic period construction, restrained natural colors, distant undeveloped forested shoreline. Preserve the number of masts, funnels and major superstructures shown in the reference; water hides the underwater hull. No captions, labels, modern buildings or ships. This is interpretive historical artwork, not documentary proof. Yosemite, Great Lakes wooden steam lumber carrier, interpreted later career of vessel built1867, 152 by29feet. Exactly TWO bare masts, ONE aft black funnel, small raised forward pilothouse, low aft machinery cabin, long neatly secured lumber deck load. This is not the Pacific sidewheel steamer. Calm fair-weather golden evening, soft amber reflections on quiet Lake Superior and a distant dark wooded shoreline, gentle smoke, realistically restrained color.",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "clean",
    "imageSha256": "c40ff33f81564542ac3644704f88d588d16ff9bbbcffc318438adddab0e70d57",
    "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."
  },
  "imageSha256": "c40ff33f81564542ac3644704f88d588d16ff9bbbcffc318438adddab0e70d57"
}