{
  "tool": "Built-in image generation",
  "imageFile": "barge-1-illustration.png",
  "createdDate": "2026-09-07",
  "referenceRole": "Newly authored GLB three-quarter render used as visual reference",
  "referenceFile": "barge-1-model-three-quarter.png",
  "historicalStatus": "Supplemental interpretive artwork, not documentary evidence or an exact GLB render",
  "generationPrompt": "Use case: historical-scene. Create highly detailed realistic reconstruction artwork of Lake Michigan Car Ferry Barge No. 1 in ORIGINAL rail-ferry service circa 1895–1910, before later bulk cargo conversion. Reference image 1 is our modern 3D reconstruction and defines the unusual silhouette: very long low unpowered WOODEN barge, 310 feet long by 44 feet beam, FOUR parallel standard-gauge railroad tracks on a wide open wooden deck, high reinforced side walls with steel diagonal bracing, broad flat stern opening for rail loading, small low forward machinery house and only ONE very small narrow auxiliary-boiler stack. Twelve illustrative 1890s wooden boxcars on four tracks, three cars per track, in dull red and weathered brown, with visible period trucks, wheels, sliding doors, pitched roofs and end ladders. No modern shipping containers. No propulsion funnel tower, no propeller wake, no sails or tall masts. Show it resting on still blue-green Great Lakes water, distant wooded shoreline, cool bright morning light, elevated three-quarter viewpoint exposing the four tracks. Entire long barge visible with margins. Realistic wood planking, heavy iron hardware and rail details. No lettering or watermark. Historical interpretation artwork, not an authenticated specific loading manifest.",
  "artefactCheck": {
    "date": "2026-09-08",
    "crops": [
      "bow",
      "midships",
      "stern",
      "rig-superstructure"
    ],
    "nativePixelInspection": true,
    "result": "clean",
    "imageSha256": "ece8b63f163f07cba3eadcf5e1168f6cb77e3d95441283eeea6fb03d1c6d7109",
    "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": "ece8b63f163f07cba3eadcf5e1168f6cb77e3d95441283eeea6fb03d1c6d7109"
}