Evidence row 279089

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agent-tools-7936.onrender.com/verify/citation"
    ]
  ],
  "name": "agent-tools-7936.onrender.com/verify/citation",
  "owner_address": "0xb3ecf17dddeaebdd16b3ebfaa79dc76347e98735",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3Ecf17DDDeAeBdd16B3EBfAA79dC76347E98735",
        "scheme": "exact"
      }
    ],
    "description": "Use before citing a paper, especially one an LLM produced: checks a DOI, arXiv id or title against Crossref, OpenAlex and arXiv. VERIFIED, RETRACTED, YEAR_DIFFERS, MISMATCH or NOT_FOUND, with the matching record. Errors (never charged): 400 bad input, 422 source could not be fetched or parsed, 429 rate limited (30/min), 502 upstream failed.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "doi": "10.1038/nature14539",
              "year": "2015"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "record": {
                "retracted": false,
                "title": "Deep learning",
                "year": 2015
              },
              "verdict": "VERIFIED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "arxiv": {
                      "description": "arXiv id, e.g. 1706.03762.",
                      "type": "string"
                    },
                    "authors": {
                      "description": "Author surnames.",
                      "type": "string"
                    },
                    "doi": {
                      "description": "DOI, e.g. 10.1038/nature14539.",
                      "type": "string"
                    },
                    "title": {
                      "description": "Paper title if there is no DOI.",
                      "type": "string"
                    },
                    "year": {
                      "description": "Cited year.",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "record": {
                      "type": "object"
                    },
                    "verdict": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-26T14:29:03.066Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-26T14:29:02.843Z"
    },
    "resource": "https://agent-tools-7936.onrender.com/verify/citation",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Use before citing a paper, especially one an LLM produced: checks a DOI, arXiv id or title against Crossref, OpenAlex and arXiv. VERIFIED, RETRACTED, YEAR_DIFFERS, MISMATCH or NOT_FOUND, with the matching record. Errors (never charged): 400 bad input, 422 source could not be fetched or parsed, 429 rate limited (30/min), 502 upstream failed."
}

What the leaf hashes

{"body":"f0e58de56a7a8c4d3283924d1e676fd87a0b0b6b72ca9457a01fb1b5a1a6961a","id":279089,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042172774973,"prev":55120,"subject":"x402_bazaar:https://agent-tools-7936.onrender.com/verify/citation","subject_kind":"source_record"}

Proof

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