Evidence row 2201288

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://fx-ecb.x402tookit.com/fx-convert"
    ]
  ],
  "name": "FX Rates ECB",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Convert an amount from one currency to another at the latest ECB reference rate, with the rate and fixing date.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "amount": 250,
              "from": "EUR",
              "to": "GBP"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "amount": 250,
              "asOf": "2026-10-11T03:53:19.810Z",
              "attribution": "Source: European Central Bank reference rates via Frankfurter.",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "fixingDate": "2026-10-09",
              "from": "EUR",
              "notChecked": [
                "the rate you would actually get",
                "fees"
              ],
              "rate": 0.84763,
              "reasons": [
                "Banks and card networks add a spread of roughly 0.5 to 3 percent to reference rates.",
                "Source: European Central Bank reference rates via Frankfurter."
              ],
              "result": 211.9075,
              "source": "ECB reference rates via Frankfurter",
              "sourceUrl": "https://api.frankfurter.dev",
              "summary": "250 EUR = 211.91 GBP at 0.84763 (ECB fixing 2026-10-09).",
              "to": "GBP",
              "verdict": "CONVERTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "amount": {
                      "description": "Amount in the from currency",
                      "type": "number"
                    },
                    "from": {
                      "description": "From currency, e.g. EUR",
                      "type": "string"
                    },
                    "to": {
                      "description": "To currency, e.g. GBP",
                      "type": "string"
                    }
                  },
                  "required": [
                    "amount",
                    "from",
                    "to"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "amount": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "attribution": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "fixingDate": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "from": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "rate": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "result": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "sourceUrl": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "to": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-02T04:06:25.618Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-11-02T04:06:25.427Z"
    },
    "resource": "https://fx-ecb.x402tookit.com/fx-convert",
    "serviceName": "FX Rates ECB",
    "tags": [
      "fx",
      "convert",
      "currency"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Convert an amount from one currency to another at the latest ECB reference rate, with the rate and fixing date."
}

What the leaf hashes

{"body":"9e0591ec0562630ed7b518c2b5ec31e4f9bd550adc5934ab9fce0aab4bcfda07","id":2201288,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646803190253,"prev":null,"subject":"x402_bazaar:https://fx-ecb.x402tookit.com/fx-convert","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0x6edf24151f034a501d231dc6dd2d1eed7ffb52d740880394f11129683c315793
2. 0x042be49d5056c93540980b786fbb3121d827c42160fda0308e6c9bbf9ab77e27
3. 0x5db1b5b04bba486971d8bdb363e68e692d06889cca8dab7f9e3b30078f7587d7
4. 0xd88591398bb971460440ae72d987f81e1ada00d2d4abc78321ff874d58968084
5. 0x36b00f68c04f3527b799d735923d97d81d58c48b73e96dffd45a32434fcc6e95
6. 0xb8ff3dd4b5b4f8c80455632000397ba54b2f82efcae9dadc0f4090ef63be454e
7. 0xe6491f8ff2c4d588c1e1142f3cdbf686ffe69507de9575286e8f1aab5d130e76
8. 0x4ed5d2e1ec646b59c029aaf3ae6934aea667eb06bc8fd6ba04d572f7d1008ac5
9. 0xdc2993c19e8bd1960762b08decad447ce269899182d6e614d446a0bffbe76318
10. 0xc55db130d81aa8f407c245e5cb641eeeee12a93a3cdae85b1ac58ff9923e0543
11. 0x61a9c19b313eef7e96e5187f5c9f7ab3973ba4c154066e49635b8edb12d9aee9
12. 0x6a1be01744d4cd9af4c498146a66c86941817311f294a3330b8681bb0dd4ea8a
13. 0x608160924e1d66c9701d48e69e878606fa6a4dd94a73d3f0570dadb0c3de65b3
14. 0xb903742c059190ddedc375958f73db84c3806732f1e54330407245d4734015f5
15. 0x2cdc73dde4ed839d7482b6b91833e64bef56c7626db8439f3bbdfcffd2ae32a3
16. 0x0e5696ae625571c52ddcd8dc09aa6c994b4ab38f2086df20d56f1f01c603e501
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af