Evidence row 63622

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.factstamp.dev/citation"
    ]
  ],
  "name": "agents.factstamp.dev/citation",
  "owner_address": "0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "description": "Says whether a citation can be repeated. Give a DOI, an arXiv ID or a paper title; the answer says whether the work exists, what it is (title, authors, year, container) and whether it has been retracted. A title that is absent from both Crossref and arXiv returns not_found, and a near title match is never reported as verified. Cited to the source record with its retrieval time. Verdicts: verified, ambiguous, retracted, not_found, unknown.",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxAmountRequired": "20000",
        "maxTimeoutSeconds": 300,
        "mimeType": "application/json",
        "network": "eip155:8453",
        "payTo": "0xc3bcd24a2b350cc73b8516b2a0539a323b42cc32",
        "resource": "https://agents.factstamp.dev/citation",
        "scheme": "exact"
      }
    ],
    "description": "Says whether a citation can be repeated. Give a DOI, an arXiv ID or a paper title; the answer says whether the work exists, what it is (title, authors, year, container) and whether it has been retracted. A title that is absent from both Crossref and arXiv returns not_found, and a near title match is never reported as verified. Cited to the source record with its retrieval time. Verdicts: verified, ambiguous, retracted, not_found, unknown.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "query": "10.1038/nature12373"
            },
            "bodyType": "application/json",
            "method": "POST",
            "type": "http"
          },
          "output": {
            "example": {
              "kind": "doi",
              "query": "10.1038/nature12373",
              "record": {
                "authors": [
                  "G. Kucsko",
                  "P. C. Maurer",
                  "N. Y. Yao"
                ],
                "container": "Nature",
                "doi": "10.1038/nature12373",
                "publisher": "Springer Science and Business Media LLC",
                "retraction": null,
                "title": "Nanometre-scale thermometry in a living cell",
                "type": "journal-article",
                "year": 2013
              },
              "sources": [
                {
                  "http_status": 200,
                  "name": "Crossref"
                }
              ],
              "verdict": "verified"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "additionalProperties": false,
          "properties": {
            "input": {
              "additionalProperties": true,
              "properties": {
                "body": {
                  "type": "object"
                },
                "bodyType": {
                  "const": "application/json"
                },
                "method": {
                  "const": "POST"
                },
                "type": {
                  "const": "http"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "additionalProperties": true,
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "const": "json"
                }
              },
              "required": [
                "type",
                "example"
              ],
              "type": "object"
            }
          },
          "required": [
            "input",
            "output"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-23T22:43:19.952Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-23T22:43:19.378Z"
    },
    "resource": "https://agents.factstamp.dev/citation",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Says whether a citation can be repeated. Give a DOI, an arXiv ID or a paper title; the answer says whether the work exists, what it is (title, authors, year, container) and whether it has been retracted. A title that is absent from both Crossref and arXiv returns not_found, and a near title match is never reported as verified. Cited to the source record with its retrieval time. Verdicts: verified, ambiguous, retracted, not_found, unknown."
}

What the leaf hashes

{"body":"dc4d8b6cd44ea780b3f2009ae47018421fb4394cc856e69447f312280687a35a","id":63622,"kind":"listing","method":"baseline/1","observed_us":1793025455218194,"prev":null,"subject":"x402_bazaar:https://agents.factstamp.dev/citation","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xb2e67cac5df701759457bea9f336e1d914e4bc093f367536947901643ce55d07
2. 0x5c12ba70998dcd9345818de91c746518fb27a0265572750e293076d14af2a9d4
3. 0x0ab3be514cee34f7f1b7fbcb2332008cac7cadd0ebbb5e5b8a2fdca8f31c1f09
4. 0xcf0562093039ef9c277005453f9cf46d1e627293727162190699ed195dbb856f
5. 0x1776e81391200405d23be52830a75a7b41ab2b6cf62913a50fef9428b5e49f95
6. 0x926816a0311b88c3e1ad7ffbee9ebd41d9a623376c9cbe65d4283f0dd0be21be
7. 0x67698d43c0875ee796cd106bfd757b17f132b8d6ef99b87f8ce591ee551e89ad
8. 0xf6aa98e1309bbaf69b6d0a838ef2b8e792bedc72c2cc2126e04055bbace6000e
9. 0x8f46605daaf73ba32b5916a571f6625fd668b00d695efb0a793f8c19f745d64d
10. 0x34826d27a00fb6f2649b492e5ca5ff6025211b9bda757487c3351c0e533593f3
11. 0x08b0ee375f7c28afd23e265e3e1bed91ba37304e42eafa665ef4a7f785b3e7bf
12. 0x3d6ec9d5ef8daa604601742088e213da0a439db6eff6ce50ec3ffb264a60ddd3
13. 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae