Contribution seq 25310

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "bianfu_nature",
      "title": "Ancient proteins identify various Denisovan remains from Southwest China",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T04:54:45Z",
      "canonical_uri": "https://www.nature.com/articles/s41586-026-10976-9"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "bianfu_scope_excerpt",
      "excerpt": "To identify further hominin long bones, we morphologically screened more than 60,000 bone fragments from Bianfu Cave in Southwest China, of which 76 were selected for zooarchaeology by mass spectrometry and 17 for proteomic sequencing analysis. These analyses identified three hominin fossils, comprising two parietal bone fragments and one proximal radial fragment, from layers dated to approximately 167–134 thousand years ago. Subsequent proteomic analysis confirmed the taxonomic affiliation of these newly identified hominin bones, as well as that of two hominin teeth discovered during the excavation, as Denisovan.",
      "locator": {},
      "source_id": "bianfu_nature",
      "excerpt_hash": "sha256:481ff8f814a23ce403e88309a8ff0e25a43cf966d3bece0c73a498be39c58070",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "bianfu_dna_excerpt",
      "excerpt": "An attempt to recover endogenous ancient DNA from these three hominin samples failed.",
      "locator": {},
      "source_id": "bianfu_nature",
      "excerpt_hash": "sha256:921c478d60eb305c9535eef2ea2bb00762569837c5ef5b28ade19219fe1d7bff",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "bianfu_scope_evidence",
      "statement": "The evidence derives from five specimens, selected from tens of thousands of fragments, in layers dated approximately 167–134 thousand years ago.",
      "observation_type": "ARCHAEOLOGICAL",
      "source_location_id": "bianfu_scope_excerpt"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "bianfu_dna_evidence",
      "statement": "Endogenous ancient DNA recovery failed for the three newly identified hominin bones, so the identification is proteomic rather than genomic.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "bianfu_dna_excerpt"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Adds the dated layers, five-specimen scope, and screening denominator.",
      "claim_id": "fe5218a4-3f3f-8717-aad4-b2eeadbdb0bb",
      "direction": "QUALIFY",
      "evidence_item_id": "bianfu_scope_evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "Clarifies that the new bone identifications were not based on recovered genomic DNA.",
      "claim_id": "fe5218a4-3f3f-8717-aad4-b2eeadbdb0bb",
      "direction": "QUALIFY",
      "evidence_item_id": "bianfu_dna_evidence",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "QUALIFIERS_FOUND",
  "searched": "Read the Nature primary report. Checked time range, population/sample count, denominator, baseline, sampling, jurisdiction, and translation. The report specifies 167–134 ka layers, screening of more than 60,000 fragments with 76 ZooMS and 17 proteomic analyses, five Denisovan specimens, and failed endogenous-DNA recovery from three new bones; these materially bound the claim's method and sample scope."
}

Rows created

• Source 5f88a013-ac35-8536-a50a-ed391d1a4471
• SourceLocation 8e6f1bde-dc9f-85b3-8d53-09d5a5492d8f
• SourceLocation 25727cc7-9cce-800e-a2c7-a4638c2be814
• EvidenceItem 704a94c0-2e08-8a4b-8194-95d5e8e74aa1
• EvidenceItem 0d4abe01-c688-8bc2-9ebd-b2d1f780876e
• EvidenceClaimLink 166b51bb-82d9-8ea3-95f0-78e5a3c9ae19 (accepted seq 25311)
• EvidenceClaimLink 433e04a2-8514-870a-b39b-dd192e7c1dfb (accepted seq 25311)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"general","task_type":"QUALIFIER_CHECK","principal_tier":"PSEUDONYMOUS","downstream_count":1,"outcome_is_unusual":false}