Evidence row 123775

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://vendsdk.com/api/v/fx-rate"
    ]
  ],
  "name": "vendsdk.com/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": "2026-10-08T06:12:02.951Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T06:12:02.844Z"
    },
    "resource": "https://vendsdk.com/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":"36e6e3ea14b5905d5b14a25a3d9b034ac37f53df8f2a33983adb502bec9bcd73","id":123775,"kind":"listing","method":"baseline/1","observed_us":1793025623701297,"prev":null,"subject":"x402_bazaar:https://vendsdk.com/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. 0xd25579f1e22f2746481e240389c12cd648f0ecda490933a2e7a040e196d678cd
2. 0x0a4914001a983eb17a60455137aa11792ea40f05e6c60ed9821038653bc2bda7
3. 0xc33ad66cbc0c2ae466973a3902fabdf08cea90bb4e23795b5dee7aa06c53bad1
4. 0xc578245fe39cb38bc2166b4c75d98e23a212f1ac730d16a9d45fafbd78066a1a
5. 0x2417866546c2e417098b96c0e661516be6045fc10d0074cef4dd803a5a0d9938
6. 0xee250c04a7b39bed1ee520aa30c81a0c8a460ac3455291c4a1b3bcbf9122dadd
7. 0xedbc8bc1be18aa568411bd37576a8588842a3f6df0d7eefd09594062f84f98d4
8. 0x5129ef2f6ca9e88ffff049d3b319312854a0e871e033b4e516666ef0ddafb5ae
9. 0x757b9d9f4873070655cb94b0d8aad6e2f5c52b67ab385af90548dccf23c346c4
10. 0x577d60d25feb12bd9b6b9f6b196c0f14aafc3b6efbb07d43169be409edfb700f
11. 0xf2fdee89378769052782dfd25aeff4865ec268617aa70e6d5f36f0b04808af0c
12. 0xa4ec009cd8db00b48fa2e4df84088950b4d34c37254de09f5e3789441c0c5e73
13. 0x889eefefef2d4457fe6114f397df813a5cbb85011a6f40309b54ddcd4aba3bd1
14. 0xefabf1105e09cf52c12c58e60cbb5048b9ac3f02631d1816a926e14bdd86fbdf
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae