{
  "schema_version": "2.0.0",
  "source_index_schema_version": "2.0.0",
  "manifest_kind": "heavy_metal_index_evidence_packet",
  "retrieval_timestamp": "2026-09-26T12:48:37.039Z",
  "page": {
    "slug": "testing/en-1811-nickel-release",
    "title": "EN 1811 Nickel Release Testing",
    "description": null,
    "page_type": "testing-method",
    "audience": [],
    "canonical_url": "https://heavymetalindex.com/testing/en-1811-nickel-release",
    "wiki_doi": null
  },
  "content_pin": {
    "status": "preserved_verified_git",
    "reason": null,
    "content_hash_scheme": "sha256-utf8-authored-markdown-v2",
    "content_hash_description": "Strip leading YAML; remove only generated hmi-page-history and hmi-page-references marker blocks; trim trailing whitespace and append one LF. Other Markdown bytes are preserved.",
    "content_sha256": "b98aeaff315f82f745286c3c3005fcb00c1a37f31f70120600b0fc9980f17c73",
    "content_bytes": 1680,
    "metadata_sha256": "be4610f3de08c1ca2bdc9c6c794f1b1513b9cea9f10cc77e147bb8769824ef57",
    "metadata_hash_description": "SHA-256 of recursively key-sorted JSON from parsed YAML, excluding updated and numeric sources (generated display metadata). All other frontmatter fields are included.",
    "published_body_sha256": "ce4c3bfba20a9c130edf0237ed844a7e61735934960c24ce745982c5746c38b5",
    "published_body_bytes": 2494,
    "published_checksum_note": "Published-body and full-Markdown checksums describe the build input, including generated display sections. They are not claimed to equal the Git revision's display sections.",
    "markdown_sha256": "4e0db1bbfa24645a65a7e1ca1d256488a487319be640df1acf86cf46ed39a100",
    "markdown_bytes": 2692,
    "git_commit_sha": "70e164c26892e9564cf209039385a2a03079e1e1",
    "last_commit_sha": "9882fa9f20a54eb5bddf94946af2c330e0617df1",
    "last_commit_date": "2026-08-04",
    "git_remote": "https://github.com/paleofoundation/heavymetalindex",
    "verify_command": "node tools/verify-evidence-packet.mjs --commit 70e164c26892e9564cf209039385a2a03079e1e1 --slug testing/en-1811-nickel-release --sha256 b98aeaff315f82f745286c3c3005fcb00c1a37f31f70120600b0fc9980f17c73 --metadata-sha256 be4610f3de08c1ca2bdc9c6c794f1b1513b9cea9f10cc77e147bb8769824ef57"
  },
  "contributing_sources": [
    "sources/lgc2003-nickel-piercing-post-assemblies"
  ],
  "data_downloads": [],
  "ingest_contract": null,
  "license": {
    "prose": "CC BY 4.0",
    "structured_data": "EU database rights reserved — see https://heavymetalindex.com/licensing",
    "attribution": "Heavy Metal Index (heavymetalindex.com), Institute of Contaminant Standards. Cite canonical_url or wiki_doi.",
    "contact": "karen@paleofoundation.com"
  },
  "attestation": {
    "for_use": "Citation, regulatory submission, or peer-review supplementary record.",
    "verifiable_by": "The verify_command checks the authored Markdown and semantic frontmatter against the named Git revision using the documented canonical hash scheme. Generated history and reference blocks are excluded from that pin; separate published checksums include them.",
    "not_a_certification": "This manifest records publication provenance. It does not certify products or independently validate the page's scientific claims.",
    "license_terms": "https://heavymetalindex.com/licensing"
  },
  "generated_at": "2026-09-26T12:40:20.450Z"
}