{
  "title": "Metal can data for AI body and end-lot evidence",
  "source_page": "https://fiund.com/industries/metal-can-body-end-lot-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "An end-lot observation does not replace body lineage",
    "context": "Paper can silhouettes use mock body and end codes. There is no food contact or closure test.",
    "records": [
      [
        "1",
        "Body ticket",
        "Bodies from B6."
      ],
      [
        "2",
        "Assembly traveler",
        "Sample C2 records body B6, end E4."
      ],
      [
        "3",
        "End image",
        "C2 top end marked E7; body mark not visible."
      ]
    ],
    "question": "What is confirmed, and what conflict remains?",
    "answer": "Record 2 traces the body to B6, agreeing with record 1, though the image in record 3 does not directly show it. The same image does show E7, conflicting with the traveler E4. Keep the end mismatch distinct from the body lineage.",
    "failureModes": [
      "Overwriting body lot with an end marking",
      "Suppressing a conflict because the assembly ID matches"
    ],
    "fields": [
      [
        "component_role",
        "Distinguishes body and end lots"
      ],
      [
        "visible_lot_mark",
        "Captures direct image evidence"
      ],
      [
        "traveler_lot",
        "Preserves the document-side identifier"
      ]
    ],
    "holdout": "Provide two ends with individual position labels; keep top and bottom traceability independent.",
    "boundary": "No canning instructions, actual closure specifications, food safety or seal judgments."
  }
}