{
  "schema_version": "2.0.0",
  "source_index_schema_version": "2.0.0",
  "manifest_kind": "heavy_metal_index_evidence_packet",
  "retrieval_timestamp": "2026-09-27T15:29:43.745Z",
  "page": {
    "slug": "sources/wu2022-selenized-yeast-laying-hens",
    "title": "Ameliorative effects of selenized yeast on laying hen performance and heavy metal residues in eggs",
    "description": null,
    "page_type": "source",
    "audience": [],
    "canonical_url": "https://heavymetalindex.com/sources/wu2022-selenized-yeast-laying-hens",
    "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": "dc33b42d5e99e71131b20690105ebdc810c1583f78c13ad4b500c7d724142efe",
    "content_bytes": 2299,
    "metadata_sha256": "fc9e82927af2d44d742dad602d1b2cdfe350c8c60ab5d89f49cfdd662a402f94",
    "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": "489234120012388b24b23d904243155db8b9c228c72ef63c17b798774d2c3c07",
    "published_body_bytes": 2537,
    "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": "ce51d5df887d58dc58f1b1268d518ccf96582c0fa81334e9d242bf3c3a9a5007",
    "markdown_bytes": 3304,
    "git_commit_sha": "70e164c26892e9564cf209039385a2a03079e1e1",
    "last_commit_sha": "5552206e60d4a0b568d15a388b5589d7a469d871",
    "last_commit_date": "2026-09-10",
    "git_remote": "https://github.com/paleofoundation/heavymetalindex",
    "verify_command": "node tools/verify-evidence-packet.mjs --commit 70e164c26892e9564cf209039385a2a03079e1e1 --slug sources/wu2022-selenized-yeast-laying-hens --sha256 dc33b42d5e99e71131b20690105ebdc810c1583f78c13ad4b500c7d724142efe --metadata-sha256 fc9e82927af2d44d742dad602d1b2cdfe350c8c60ab5d89f49cfdd662a402f94"
  },
  "contributing_sources": [],
  "data_downloads": [],
  "ingest_contract": {
    "metadata_complete": false,
    "ingest_complete": false,
    "gaps": [
      "evidence_fitness",
      "raw_sha256"
    ],
    "completion_note": "Metadata completeness alone does not prove extraction, routing, or primary-source coverage. Completed ingest requires its reconciliation and route audits."
  },
  "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": "2026-09-27T09:05:47.474Z"
}