{
  "id": "palimpsest-news:research-corpus",
  "slug": "research-corpus-metadata",
  "url": "https://palimpsest.info/news/research-corpus-metadata/",
  "signal_id": "research-corpus",
  "headline": "The research-corpus ledger tracks 5 allowlisted public repositories",
  "dek": "Only Git ref advertisements and default-branch cursors are published; notice bodies, keyword lists and routing rules stay unpublished.",
  "section": "attention",
  "order": 9,
  "type": "measurement",
  "priority": "standard",
  "status": "live",
  "published_at": "2026-08-24T02:11:10Z",
  "modified_at": "2026-08-24T02:11:10Z",
  "claim_fingerprint": "sha256:345b93d79499a4021b7eebdb2d6eaf0b76660096844feb54e0083bf224c4f2e7",
  "metric": {
    "label": "sources",
    "value": 5,
    "unit": "count",
    "denominator": {
      "label": null,
      "value": null
    }
  },
  "claims": [
    {
      "type": "finding",
      "statement": "The current metadata-only ledger covers 5 allowlisted research repositories."
    }
  ],
  "evidence": {
    "url": "https://palimpsest.info/readings/research-corpus-latest.json",
    "input": {
      "filename": "research-corpus-latest.json",
      "sha256": "6ce2fea34433fbd756039a201a7dbf6dfd2c4ea8bf84f1e432294f08d09858c7",
      "bytes": 7055
    },
    "source_timestamp": "2026-08-24T02:11:10Z"
  },
  "method": {
    "summary": "one bounded keyless Git smart-HTTP ref advertisement per source; exact default-branch cursor plus aggregate ref-count deltas",
    "version": 1
  },
  "limitations": [
    "A commit cursor change is not a claim about why the repository moved, and unpublished notice bodies cannot be inferred from the metadata."
  ],
  "related_signal_ids": [
    "github-refuge",
    "wayback"
  ]
}