Evidence row 72339

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://claim-grounding.prospectintel.workers.dev/v1/check_answer"
    ]
  ],
  "name": "claim-grounding.prospectintel.workers.dev/v1/check_answer",
  "owner_address": "0x485ffc037f02dddc154a454a9ca89c4b1b29e25b",
  "raw": {
    "accepts": [
      {
        "amount": "1000000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x485FfC037f02dDDc154A454a9cA89C4B1b29e25b",
        "scheme": "exact"
      }
    ],
    "description": "Check answer. Splits an AI answer into claims and checks each against Wikipedia, Wikidata and (for current claims) news. Returns per-claim verdict, confidence, quote, source URL and sentence, a source-quoted suggested_correction for wrong claims, and an answer summary with problem_sentences. $1.00 USDC.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "answer": "Paris is the capital of France. Water boils at 100 degrees Celsius at sea level."
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "claims": [
                {
                  "citations": [
                    {
                      "provider": "context",
                      "quote": "Paris is the capital and largest city of France.",
                      "retrieved_at": "2026-10-10T12:00:00.000Z",
                      "title": "Paris",
                      "url": "https://en.wikipedia.org/wiki/Paris"
                    }
                  ],
                  "claim_id": "clm_3f9a1c2b4d5e6f70",
                  "confidence": 0.92,
                  "grounding_required": true,
                  "rationale_short": "Claim wholly entailed by cited evidence.",
                  "span": {
                    "end": 30,
                    "start": 0
                  },
                  "support_score": 0.92,
                  "text": "Paris is the capital of France",
                  "verdict": "supported"
                }
              ],
              "job_id": null,
              "mode": "fast",
              "next_actions": [],
              "receipt": {
                "claim_hashes": [
                  "sha256:UGFyaXMgaXMgdGhlIGNhcGl0YWwgb2Yg"
                ],
                "created_at": "2026-10-10T12:00:00.000Z",
                "evidence_urls": [
                  "https://en.wikipedia.org/wiki/Paris"
                ],
                "priced_usd": 1,
                "verdicts": [
                  "supported"
                ]
              },
              "result_id": "res_1a2b3c4d5e6f7a8b",
              "source": "https://en.wikipedia.org/wiki/Paris",
              "summary": {
                "claims_checked": 2,
                "claims_total": 2,
                "counts": {
                  "contradicted": 0,
                  "insufficient_evidence": 0,
                  "mixed": 0,
                  "not_checkable": 0,
                  "outdated": 0,
                  "supported": 2
                },
                "overall_verdict": "all_supported",
                "problem_sentences": [],
                "unverified_sentences": []
              },
              "upsell": null,
              "version": "1.4.7",
              "why": "Claim wholly entailed by cited evidence."
            },
            "type": "json"
          }
        },
        "schema": {
          "properties": {
            "input": {
              "properties": {
                "body": {
                  "properties": {
                    "answer": {
                      "description": "The answer text to check.",
                      "minLength": 1,
                      "type": "string"
                    },
                    "sources": {
                      "description": "Optional. Up to 10 sources of your own, used as extra evidence next to the public sources and cited with provider and source_type \"caller\". The response lists what was used in sources_used.",
                      "items": {
                        "additionalProperties": false,
                        "anyOf": [
                          {
                            "required": [
                              "url"
                            ]
                          },
                          {
                            "required": [
                              "text"
                            ]
                          }
                        ],
                        "description": "One source: {url} for a public https page we fetch, or {text, title?, url?} for text you already have.",
                        "properties": {
                          "text": {
                            "description": "Source text to check the claim against (up to 20,000 characters). When given, no fetch is made.",
                            "maxLength": 20000,
                            "minLength": 1,
                            "type": "string"
                          },
                          "title": {
                            "description": "Optional title shown in citations.",
                            "maxLength": 200,
                            "type": "string"
                          },
                          "url": {
                            "description": "Public https URL. Fetched with a 3.5 s timeout and a 512 KB cap; http, file and other schemes, private / loopback / link-local / metadata addresses, IP-literal hosts, custom ports and URLs with credentials are rejected (HTTP 400, not charged). With text, it is only the citation link.",
                            "format": "uri",
                            "maxLength": 2048,
                            "type": "string"
                          }
                        },
                        "type": "object"
                      },
                      "maxItems": 10,
                      "type": "array"
                    },
                    "sources_only": {
                      "default": false,
                      "description": "Optional. true = judge the claim only against your sources (no public-source lookups). Needs a non-empty sources array.",
                      "type": "boolean"
                    }
                  },
                  "required": [
                    "answer"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "const": "json"
                },
                "method": {
                  "const": "POST"
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "const": "json"
                }
              },
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-14T17:40:20.465Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-14T17:40:20.138Z"
    },
    "resource": "https://claim-grounding.prospectintel.workers.dev/v1/check_answer",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Check answer. Splits an AI answer into claims and checks each against Wikipedia, Wikidata and (for current claims) news. Returns per-claim verdict, confidence, quote, source URL and sentence, a source-quoted suggested_correction for wrong claims, and an answer summary with problem_sentences. $1.00 USDC."
}

What the leaf hashes

{"body":"4e4890a7837030d0d9f202ee78f2596592f1427ba9e6fac869f7fc82df118c7e","id":72339,"kind":"listing","method":"baseline/1","observed_us":1793025485664212,"prev":null,"subject":"x402_bazaar:https://claim-grounding.prospectintel.workers.dev/v1/check_answer","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.