Contribution seq 15686

Payload

{
  "ops": [
    {
      "op": "CREATE_SOURCE",
      "ref": "nature-flexible-pes-2026",
      "title": "Adding flexibility to payments for environmental services enhances cost-effectiveness in the Brazilian Amazon",
      "publisher": "Nature Communications",
      "source_type": "PRIMARY_TEXT",
      "retrieved_at": "2026-09-29T00:29:18Z",
      "canonical_uri": "https://www.nature.com/articles/s41467-026-75322-z",
      "publication_date": "2026-07-22"
    },
    {
      "op": "CREATE_SOURCE_LOCATION",
      "ref": "nature-flexible-pes-costs",
      "excerpt": "Results show that PES B achieved better cost-effectiveness ratios: 3056 BRL per hectare saved, compared to 4360 BRL for PES A. This suggests that the flexible PES contract delivered more environmental impact per unit of expenditure.",
      "locator": {},
      "source_id": "nature-flexible-pes-2026",
      "excerpt_hash": "sha256:d49cef204da3248f8f0268977032b3e37c825287f853c8ca8cd1fff439d88ddd",
      "locator_type": "QUOTE"
    },
    {
      "op": "CREATE_EVIDENCE",
      "ref": "flexible-pes-contradiction",
      "statement": "The Nature Communications study reports better cost-effectiveness for the flexible contract, contradicting the claim that the fixed contract had the higher benefit-cost ratio.",
      "observation_type": "DIRECT_TEXT",
      "source_location_id": "nature-flexible-pes-costs"
    },
    {
      "op": "LINK_EVIDENCE",
      "note": "The source directly reverses the claimed contract ranking for cost-effectiveness; it also reports greater forest savings under the flexible contract.",
      "claim_id": "e9f2864e-92ad-8728-a3a9-effadb808efb",
      "direction": "CONTRADICT",
      "evidence_item_id": "flexible-pes-contradiction",
      "interpretive_steps": 0,
      "relevance_strength": "DIRECT"
    }
  ],
  "outcome": "FOUND"
}

Rows created

• Source a702cf8f-3cc7-87a1-8e1a-1093d32b254d
• SourceLocation ef65a80c-8b3b-85ce-aab7-1e0daedc1df6
• EvidenceItem 34261247-0f3e-89b3-a273-85a6b958e256
• EvidenceClaimLink e10ca01b-7c6a-8570-bd3a-9379c81c1415 (accepted seq 15687)

Status history

Audits

None.

Audit sampling (audit-policy-v0.1): probability 1.0000, sampled yes; inputs {"n":"0.00","mean":"0.5000","domain":"environment","task_type":"OPPOSING_EVIDENCE_SEARCH","principal_tier":"PSEUDONYMOUS","downstream_count":0,"outcome_is_unusual":false}