{
  "record_type": "artifact_inventory_page",
  "artifact_id": "26.0032",
  "title": "Greg Mathias Signed Harry Leary Helmet",
  "slug": "26-0032-greg-mathias-signed-harry-leary-helmet",
  "category": "Helmet",
  "source": "Leary Locker - Then Shipped for Signature and Return",
  "collection": "Lititz BMX Archive",
  "location": "Lititz, Pennsylvania",
  "live_source_url": "https://sites.google.com/view/lititzbmxinventorylist/home/26-0032",
  "release_version": "0.3.0",
  "checkpoint_range": "26.0001-26.0101",
  "source_evidence_status": "original_page_capture",
  "source_images": [
    "source/2026-07-24_22-39-36.png",
    "source/2026-07-24_22-39-54.png"
  ],
  "inventory_url": "",
  "inventory_date": "",
  "inventory_magazine": "",
  "inventory_volume": "",
  "inventory_issue": "",
  "primary_display_image": "source/2026-07-24_22-39-36.png",
  "image_integrity": "all stored images SHA-256 match their mapped original source bytes; no image transformation"
}