Evidence row 261431

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://agents.crowdspark.me/v1/fx/rates"
    ]
  ],
  "name": "Agent Tools",
  "owner_address": "0x0dea0030a17bf886543a757c55924710258c2eec",
  "raw": {
    "accepts": [
      {
        "amount": "1000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x0dEA0030A17BF886543a757c55924710258c2eec",
        "scheme": "exact"
      }
    ],
    "description": "Currency exchange rates (European Central Bank reference rates) for price conversion, invoicing and travel budgets. Latest or historical by date.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "base": "USD",
              "symbols": "EUR,JPY"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "base": "USD",
              "date": "2026-10-22",
              "rates": {
                "EUR": 0.89246,
                "JPY": 157.05
              },
              "source": "European Central Bank via Frankfurter"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "base": {
                      "description": "Base currency, e.g. USD",
                      "type": "string"
                    },
                    "date": {
                      "description": "YYYY-MM-DD, optional",
                      "type": "string"
                    },
                    "symbols": {
                      "description": "Comma list, optional",
                      "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": "2026-10-26T15:48:15.612Z",
    "quality": {
      "l30DaysTotalCalls": 4,
      "l30DaysUniquePayers": 4,
      "lastCalledAt": "2026-10-26T09:35:27.315Z"
    },
    "resource": "https://agents.crowdspark.me/v1/fx/rates",
    "serviceName": "Agent Tools",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Currency exchange rates (European Central Bank reference rates) for price conversion, invoicing and travel budgets. Latest or historical by date."
}

What the leaf hashes

{"body":"a98cd0edbe78f2f47fc2c855d3b2b2084f5f1235804d3b9e694422e00f753f2b","id":261431,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793032200189735,"prev":17540,"subject":"x402_bazaar:https://agents.crowdspark.me/v1/fx/rates","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. 0x4ffcb537e28dbdad6f761aee988ed97854c5fb4bf3a42e340dbc75dae08e9c05
2. 0x6ccde5733cfb491f04847bdea9d5fd694344fda73b9b2bbffb3afbe4be878db8
3. 0x720da776263053d4f4152e9411eed56fdf50450d85bfec5577a5b6a841f81389
4. 0x082fd5e09ccda284b21714382e73feedac1405ecc14fb66c42af8c73ed2195f3
5. 0xf527ccc53828d2759c59c3e5df81ca522f9f7d13c327d50b39b898961056747b
6. 0xe28a058a2ace3e1bc70d8fff539969ba89afbc47bb16287f8adb9ecfed84dc76
7. 0x6d35c3d58070777ca4391a1b6c2e0dcbc0e26aac099023bb83bd959692913cef
8. 0x76af4052e4d3b2e2a05dd7ef510e420ed92adcf1005f7fe5845b24b07c0a330e
9. 0x445ce47126891ae452ff344da4c7a0fc597f5e37bf48cfbfe047210b0b4b03c4
10. 0x62c975a2c751182cb374d19834d999a49e29a6df9ba4accfe84ac8b4b21dc54a
11. 0xe281245a49847bca87f4c96f8da0284eeef688f3f597a62adb2d9089f4385e55
12. 0xecaf47ba75097c34f2d3c4d62539dace0db8b484bf08941a9259e2d1e8ccea77
13. 0xf7d2cf278e5d2768b8bdb70730c378877cf7165d8efcbec8bcd3282fdc50d177
14. 0x0733993143f0230e79482cef2c38e95d98f9eafbe64a43cdc74a4545938a4167
15. 0x2be1e80e065dd6b2cc75a7142be22225acd144ac975d70bf24b4f01fd76dc497
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae