Evidence row 123763

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vending-machine-seven.vercel.app/api/v/fx-rate"
    ]
  ],
  "name": "vending-machine-seven.vercel.app/api/v/fx-rate",
  "owner_address": "0xc648116b5debe4af7d78838aa468d07e0a9ab697",
  "raw": {
    "accepts": [
      {
        "amount": "3000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 120,
        "network": "eip155:8453",
        "payTo": "0xc648116b5deBE4AF7D78838AA468d07e0A9Ab697",
        "scheme": "exact"
      }
    ],
    "description": "Live fiat FX rates (Frankfurter/ECB primary, open.er-api fallback) for cross-border agents",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {},
            "queryParams": {
              "base": "USD",
              "symbols": "EUR,GBP"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "base": "USD",
              "ok": true,
              "rates": {
                "EUR": 0.92,
                "GBP": 0.79
              },
              "service": "fx-rate",
              "source": "frankfurter.dev (ECB)"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v/fx-rate",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "type": "object"
                },
                "queryParams": {
                  "additionalProperties": false,
                  "properties": {
                    "base": {
                      "description": "ISO 4217 base, default USD",
                      "type": "string"
                    },
                    "symbols": {
                      "description": "Comma list e.g. EUR,GBP,JPY",
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "base": {
                      "type": "string"
                    },
                    "ok": {
                      "type": "boolean"
                    },
                    "rates": {
                      "type": "object"
                    },
                    "service": {
                      "type": "string"
                    },
                    "source": {
                      "type": "string"
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-13T03:18:08.111Z",
    "quality": {
      "l30DaysTotalCalls": 3,
      "l30DaysUniquePayers": 3,
      "lastCalledAt": "2026-10-13T03:18:07.958Z"
    },
    "resource": "https://vending-machine-seven.vercel.app/api/v/fx-rate",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Live fiat FX rates (Frankfurter/ECB primary, open.er-api fallback) for cross-border agents"
}

What the leaf hashes

{"body":"07df7f49751a8af3782a1a397e66c7c516a66ab48b37710fa583094b8e53b419","id":123763,"kind":"listing","method":"baseline/1","observed_us":1793025623691740,"prev":null,"subject":"x402_bazaar:https://vending-machine-seven.vercel.app/api/v/fx-rate","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. 0xe198ca16a54af490eb422e0a74d54115bf8aafc52c67adf9df417236d89efd3b
2. 0x6b689e35ad108185026b11007709c224f2fadb63103ea1a645874e37ecd57380
3. 0xbf6fc1bdc919433563bd9424424a8d6dc418dd383609774d27a40d8dae52071c
4. 0xe184b8d13f6584d81273949ad1e96929cfa3a312798e67940d0df805bc35fbd7
5. 0x22f727075e9f1d8d4bbb3334412a87c87fa25f522d6d2a2d21b3f3dff5af6493
6. 0x1dc057371e909dbb8bf9a66b116fae55b52c0a9404be846f4a020e155298f8fb
7. 0x4126c93ce4fc0351bc3cdb49969fb88b729966656ffce385107d7e649a3a5f65
8. 0x43acf4759531725b59aaf64f16eae5155bdfec3f9b359fd1234761940576e50e
9. 0x6a6af4a19fe5ffeeca843a53e49f8f19b2c70e2abba0a2b716f5a0dd3719425c
10. 0x2cbff68076c452d653c930667b60ac0d1dd957bf168bc813dea281be86c2e39f
11. 0xce35ce45ef8f8ea3dfabeeed3d2069f34fb82c77d0d8f31e3429b7d6deb0a351
12. 0x714c96bd488ccf4af927c8bc83397404f7f6f1b165b622d0e8216290209825e4
13. 0x3fcdf7fa32ccefe771eb57ae3015142065d64e3ce732fea7d11b9a3c99dde44f
14. 0x0b7541c75cc482a7134110311d7dbd02095d969ba21177de9b21a52a55981718
15. 0x6dc40f983a3840a0ad927a9ca17f4ff1e3b649a6c735e2a09b140db7c2caf13b
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae