Evidence row 17540

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": "2026-10-26T09:35:27.803Z",
    "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":"e83000fa726377bc936800c7f6809f0d0530be45e98a94e1814738e6c62ff861","id":17540,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793025326966626,"prev":null,"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. 0xbe5d418e94aa0fc1dce85d779196bea887b9e00da26f2c1564fe17d926e41f95
2. 0xae15001ae4c678b80b6143e8336974703915f7e4b8310dc3fa24dcd956be58a2
3. 0xb7807d80236ab306c35a77edd16022f633891925283dd653113bd10a92b98f32
4. 0x399322c758fdd679e75f0cd6e540d257ee892028fe8c1a3b40c02eb7d9caac6e
5. 0x916e85a0419f4c398b86ca4930ece44b6a2391f248f7ecd7878235e8dd87b1fc
6. 0x0cd577a7164aca7752434a4af3a78013ba96fe75c5d4c3cb5c23a4d7e84c104a
7. 0x01ff9c1428ea1bef930fd8dee34b43cb910da47fad729496995755336cc2397e
8. 0xc680ac2724c9a35af4ead0d6c22006c291f4b3020d975c8eca929502420b51a2
9. 0x3d099a7c22d810954fd7b1d778d0e3aa00cd895cb2389d397ae7c71ec73378e0
10. 0x6a746b816cbae6dd852b6174fa370c7d8224f421d42164fa99d1a244739599d1
11. 0x0c2fadf69af6b0b6e19a10cc8f6ddfdff26662d74207cc53dcbcf5abfbdbc8c9
12. 0xa6f71fd6c3a59323bf7c5386a54935b14c555d8c717289cc73700f56d86994cd
13. 0xd5b5bb5812612371a70171b2252d90e95bb0581ea5a3be198122adc8442e4f79
14. 0xf692ce2b0a640ec9f75aa960e5fb1c2c7091a04e24881798735752c19014e519
15. 0x9f68b5e15459cb62b8c0cd4c124fa61c74147b4a5755a200fbecd21a581635d1
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae