Evidence row 1038993

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.sitecheck-api.workers.dev/api/airports"
    ]
  ],
  "name": "SiteCheck",
  "owner_address": "0xb8491f953e6860d3b5840b73c60883ff099ceafa",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "J8vnmBx4pS1X7UUBTfz1yWBKiw69Dj2yRGRHDaXBRdhR",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x3600000000000000000000000000000000000000",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:5042",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:143",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x79A02482A880bCE3F13e09Da970dC34db4CD24d1",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:480",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:10",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "2000",
        "asset": "0xcebA9300f2b948710d2653dD7B07f33A8B32118C",
        "extra": {
          "name": "USDC",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42220",
        "payTo": "0xb8491F953e6860D3b5840b73c60883Ff099ceAfA",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "CCW67TSZV3SSS2HXMBQ5JFGCKJNXKZM7UQUWUZPUTHXSTZLEO7SJMI75",
        "extra": {
          "areFeesSponsored": true
        },
        "maxTimeoutSeconds": 300,
        "network": "stellar:pubnet",
        "payTo": "GBIX2M7HNL2G2VYU5KZ446OSN55ZWHS3WBEUP4JTLS6R34VXIGTDOAFI",
        "scheme": "exact"
      },
      {
        "amount": "0.002",
        "asset": "524C555344000000000000000000000000000000",
        "extra": {
          "areFeesSponsored": false,
          "invoiceId": "3a591f8b-4528-4c25-b8b9-6f1f8f514b46",
          "issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 300,
        "network": "xrpl:0",
        "payTo": "rDxNZCDfLxUzeMWGGwsY3sjQT8eoZCf8UJ",
        "scheme": "exact"
      },
      {
        "amount": "1508",
        "asset": "XRP",
        "extra": {
          "areFeesSponsored": false,
          "invoiceId": "3de745fc-88fc-4634-9d56-219f94bc5387",
          "sourceTag": 804681468
        },
        "maxTimeoutSeconds": 300,
        "network": "xrpl:0",
        "payTo": "rDxNZCDfLxUzeMWGGwsY3sjQT8eoZCf8UJ",
        "scheme": "exact"
      }
    ],
    "description": "Airport lookup in a bundled OurAirports extract (public domain, dated in the answer): by IATA or ICAO code, by name or city words, or the nearest airports within a radius (up to 300 km) of a point. Covers large and medium airports and every airport with an IATA code; small airports without one are left out. Name, codes, type, city, country, coordinates, elevation and Wikipedia link. No time zone (not in the source).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "code": "LHR"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "airports": [
                {
                  "city": "London",
                  "country": "GB",
                  "elevationM": 25,
                  "iata": "LHR",
                  "icao": "EGLL",
                  "lat": 51.47075,
                  "lon": -0.45991,
                  "name": "London Heathrow Airport",
                  "type": "large",
                  "wikipedia": "https://en.wikipedia.org/wiki/Heathrow_Airport"
                }
              ],
              "checkedAt": "2026-10-15T14:00:30.557Z",
              "count": 1,
              "dataDate": "2026-10-15",
              "query": {
                "code": "LHR"
              },
              "source": "OurAirports (public domain), large and medium airports and all airports with an IATA code"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "code": {
                      "description": "IATA (3 letters) or ICAO (4 letters) code (one of code, q or lat and lon)",
                      "type": "string"
                    },
                    "lat": {
                      "description": "Latitude for the nearest search (with lon)",
                      "type": "string"
                    },
                    "limit": {
                      "description": "Airports to return, 1 to 20, default 10",
                      "type": "string"
                    },
                    "lon": {
                      "description": "Longitude for the nearest search (with lat)",
                      "type": "string"
                    },
                    "q": {
                      "description": "Name or city words, 3 to 60 characters (one of code, q or lat and lon)",
                      "type": "string"
                    },
                    "radiusKm": {
                      "description": "Search radius for the nearest search, 1 to 300, default 300",
                      "type": "string"
                    }
                  },
                  "required": [],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-28T23:03:08.36Z",
    "quality": {
      "l30DaysTotalCalls": 6,
      "l30DaysUniquePayers": 5,
      "lastCalledAt": "2026-10-28T23:03:06.931Z"
    },
    "resource": "https://api.sitecheck-api.workers.dev/api/airports",
    "serviceName": "SiteCheck",
    "tags": [
      "airports",
      "iata",
      "icao",
      "airport code",
      "nearest airport"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Airport lookup in a bundled OurAirports extract (public domain, dated in the answer): by IATA or ICAO code, by name or city words, or the nearest airports within a radius (up to 300 km) of a point. Covers large and medium airports and every airport with an IATA code; small airports without one are left out. Name, codes, type, city, country, coordinates, elevation and Wikipedia link. No time zone (not in the source)."
}

What the leaf hashes

{"body":"a3ec129a146e284bed7905adc8d306077bfc7d485325e0192e497bc294c51656","id":1038993,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793298277662704,"prev":68747,"subject":"x402_bazaar:https://api.sitecheck-api.workers.dev/api/airports","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-29 (242798 rows).

1. 0x4680946962937e06f5f2fd031c4b811fe48db8f373943f3793800fe3d180d88c
2. 0xf087fefe54e67e167a1795b794c5872543490cbc049ff170ce5302b63db5dcc0
3. 0xc4df708cb17a15d0eb88c66a35292b42eb26f302fae92cd372473edd61d3e77a
4. 0xd15e7bb866b5d700605a9d81ae84d6b64eec442b35f14326efc3cbfc984997cb
5. 0xe5c3db1e9c960f642821a789b8358a42eec64380aa6ab5d5bd16da43e6d4b812
6. 0x4d45390e23a8810fa10d684e428d6e1a6521f03e638f191e9e0dd9a739ea4a37
7. 0x70ace3528e33878fa9d28219e536a9495a775acdad2f73141cc2078d9ab05ca8
8. 0xbcb1969b1c0731f2b9d62b45fe3d555da1725fa8b580c45385dabb8bd9cd8cad
9. 0xd2d98b17009f916afc11769c83b032c04b4decb44e8fdfc1311ed32e20a7ef15
10. 0xb4e4ef5f5667159a0aada0618058642ce85e7d75df28c5dba6162f837af47700
11. 0x99ac8ba4cfbebdb6bd1fefb7c444b901aaed072e279b93684f3cabbbaf1da5dc
12. 0xf2b4d8ab2e0bdab12ba5a57ab27e20b5b0e6189f2db981bbecff06ddd39d27c0
13. 0xf671ac144e55381320422b5475c2bfb30442fc6b55a1424d1c0f0576f2d27c5c
14. 0xba203712cc4170d9697121c2026471be02b4061fd0831c90d2971031c905f0c1
15. 0x0bc4adb5c11d6f42a54004eb9a86e4a9294c3fb793d78af72f971454ecfe5b44
16. 0x976395aaca1b771b7e37710dee4157412909d2398c44e306a2e1e3fe83b984fd
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1