{
  "schema_version": "2.0.0",
  "source_index_schema_version": "2.0.0",
  "manifest_kind": "heavy_metal_index_evidence_packet",
  "retrieval_timestamp": "2026-09-20T17:52:22.534Z",
  "page": {
    "slug": "ingredients/bread",
    "title": "Bread",
    "description": null,
    "page_type": "ingredient",
    "audience": [
      "regulator",
      "educator",
      "consumer",
      "app"
    ],
    "canonical_url": "https://heavymetalindex.com/ingredients/bread",
    "wiki_doi": null
  },
  "content_pin": {
    "status": "unpinned",
    "reason": "Git history and a matching verified prior manifest are unavailable.",
    "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": "b2f2cff803fbc6ec3c4d7a1a8e94620c075940537e5dbcdfec9466553ebc3082",
    "content_bytes": 15758,
    "metadata_sha256": "c61618d64bd4ce30c4423577aab2fc9135c69c09c9e24f5cc03f35c8cbe1cbcf",
    "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": "e75baacfb25d6c490b06a628139a38107d5e196d20ecc4ff681c316ff41ad69c",
    "published_body_bytes": 16683,
    "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": "3e7db281c8d564fe8ef01248f82e219a30fd94d5e3f0facbe3e075ea8f1ea0c5",
    "markdown_bytes": 18392,
    "git_commit_sha": null,
    "last_commit_sha": null,
    "last_commit_date": null,
    "git_remote": "https://github.com/paleofoundation/heavymetalindex",
    "verify_command": null
  },
  "contributing_sources": [
    "sources/asaditouranlou2025-bread-iran-montecarlo",
    "sources/asaditouranlou2025-bread-wheat-mashhad",
    "sources/bfr2020-aluminium-faq-consumer-products",
    "sources/cot2008-uk-tds-metals",
    "sources/efsa-aluminium-afc-2008",
    "sources/efsa-chromium-contam-2014",
    "sources/efsa2012-cadmium-dietary-exposure-europe",
    "sources/efsa2014-dietary-exposure-iAs",
    "sources/el-daouk2020-aluminum-food-lebanon",
    "sources/fda2022-tds-elements-fy2018-fy2020",
    "sources/fera2015-uk-tds-metals",
    "sources/fsa2014-infant-foods-metals",
    "sources/gacal2023-cadmium-lead-bread-gluten-free-poland",
    "sources/hernandez2019-cr-vi-cr-iii-milk-dairy-cereal-france",
    "sources/kazimov2014-dietary-heavy-metals-azerbaijan",
    "sources/loutfy2012-ismailia-foodstuffs-metals",
    "sources/mancuso2024-food-contamination-cvd",
    "sources/salaheldin2025-multimatrix-foods-egypt",
    "sources/saraiva2021-chromium-speciation-bread-cereals-ssid-hplcicp",
    "sources/stahl2017-aluminum-food-contact-part1",
    "sources/wang2020-jilin-total-diet-metals"
  ],
  "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": "This manifest reports build-input checksums but has no verified Git pin. It cannot establish that these page bytes correspond to a named Git revision.",
    "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": "2026-09-14T11:17:46.199Z"
}