{
  "schema_version": "2.0.0",
  "source_index_schema_version": "2.0.0",
  "manifest_kind": "heavy_metal_index_evidence_packet",
  "retrieval_timestamp": "2026-09-26T08:17:02.667Z",
  "page": {
    "slug": "ingredients/blueberries",
    "title": "Blueberries",
    "description": null,
    "page_type": "ingredient",
    "audience": [
      "regulator",
      "educator",
      "consumer",
      "app"
    ],
    "canonical_url": "https://heavymetalindex.com/ingredients/blueberries",
    "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": "dfa58d8d1dccd8925d7c5c62678793fce12e4171227e9e959f15f1886383a97a",
    "content_bytes": 12311,
    "metadata_sha256": "9a1fbc6180267cf71cdf79b2818d08b5dfb43781ee181b84c96a57500d25777f",
    "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": "8de3350da46c0ff9fbb437b0250ae983e5bc43a4e466abed2a26b25d99ff4721",
    "published_body_bytes": 13662,
    "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": "cc50e2cabb059d2dfe6be94979801f5040e5c69a317675b859364fb8df5685fd",
    "markdown_bytes": 15407,
    "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 ingredients/blueberries --sha256 dfa58d8d1dccd8925d7c5c62678793fce12e4171227e9e959f15f1886383a97a --metadata-sha256 9a1fbc6180267cf71cdf79b2818d08b5dfb43781ee181b84c96a57500d25777f"
  },
  "contributing_sources": [
    "sources/bramwell2022-urban-garden-produce-lead",
    "sources/fda-tds-elements-2018-2020",
    "sources/fda2022-tds-elements-fy2018-fy2020",
    "sources/fsa2016-infant-food-formula-metals-survey",
    "sources/lee2023-south-korea-fresh-fruits-seven-metals",
    "sources/mania2021-lead-cadmium-arsenic-mercury-tin-fruit-poland",
    "sources/tsegay2025-fruit-byproduct-toxicology-detoxification-review",
    "sources/us-house-subcommittee2021-baby-foods-tainted-heavy-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": "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": "2026-09-26T06:21:27.565Z"
}