Evidence row 1509383

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/bytecode"
    ]
  ],
  "name": "TraceFast",
  "owner_address": "0x2a65491e93ad0d484b74405401a38e2e0e5edd7e",
  "raw": {
    "accepts": [
      {
        "amount": "5000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "assetTransferMethod": "eip3009",
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x2A65491E93Ad0d484b74405401A38e2E0E5EDd7e",
        "scheme": "exact"
      }
    ],
    "description": "TraceFast live Ethereum data: the current runtime bytecode of a contract as hex, with its code hash and a structural fingerprint that is equal across contracts sharing the same logic. Up to 24 576 bytes of code. An address with no indexed code answers 404. Path address: The contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-bytecode.md",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "address": "0xdac17f958d2ee523a2206206994597c13d831ec7"
            },
            "queryParams": {},
            "type": "http"
          },
          "output": {
            "example": {
              "data": {
                "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
                "bytecode": "0x606060405260043610610196576000357c010000000000000000000000000000…",
                "bytecodeSize": 11075,
                "chainId": 1,
                "codeHash": "0xb44fb4e949d0f78f87f79ee46428f23a2a5713ce6fc6e0beb3dda78c2ac1ea55",
                "fingerprint": "0x342eb72f3a7527ffefead535d3acf6841ccb69f356b20a4593952adf7431cd92"
              }
            },
            "type": "json"
          }
        },
        "routeTemplate": "/api/v1/chains/1/contracts/:address/bytecode",
        "schema": {
          "properties": {
            "input": {
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "type": "object"
                }
              },
              "required": [
                "method"
              ]
            }
          }
        }
      },
      "offer-receipt": {
        "info": {
          "offers": [
            {
              "acceptIndex": 0,
              "format": "jws",
              "signature": "eyJhbGciOiJFZERTQSIsImtpZCI6ImRpZDp3ZWI6bXBwLnRyYWNlZmFzdC54eXojMjAyNi0xMCJ9.eyJhbW91bnQiOiI1MDAwIiwiYXNzZXQiOiIweDgzMzU4OWZDRDZlRGI2RTA4ZjRjN0MzMkQ0ZjcxYjU0YmRBMDI5MTMiLCJuZXR3b3JrIjoiZWlwMTU1Ojg0NTMiLCJwYXlUbyI6IjB4MkE2NTQ5MUU5M0FkMGQ0ODRiNzQ0MDU0MDFBMzhlMkUwRTVFRGQ3ZSIsInJlc291cmNlVXJsIjoiaHR0cHM6Ly9tcHAudHJhY2VmYXN0Lnh5ei9hcGkvdjEvY2hhaW5zLzEvY29udHJhY3RzLzB4ZGFjMTdmOTU4ZDJlZTUyM2EyMjA2MjA2OTk0NTk3YzEzZDgzMWVjNy9ieXRlY29kZSIsInNjaGVtZSI6ImV4YWN0IiwidmFsaWRVbnRpbCI6MTc5MzMzNDMwMCwidmVyc2lvbiI6MX0.LQ9LAPutTMP2UThWSKZecXU4-2IiW2rjsvxdXgCWyLVM4CUMmLY0iq53Q1Hxr1sK61STK3SiNSjW9sm06iI_Bw"
            }
          ]
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "offers": {
              "items": {
                "properties": {
                  "acceptIndex": {
                    "type": "integer"
                  },
                  "format": {
                    "type": "string"
                  },
                  "payload": {
                    "properties": {
                      "amount": {
                        "type": "string"
                      },
                      "asset": {
                        "type": "string"
                      },
                      "network": {
                        "type": "string"
                      },
                      "payTo": {
                        "type": "string"
                      },
                      "resourceUrl": {
                        "type": "string"
                      },
                      "scheme": {
                        "type": "string"
                      },
                      "validUntil": {
                        "type": "integer"
                      },
                      "version": {
                        "type": "integer"
                      }
                    },
                    "required": [
                      "version",
                      "resourceUrl",
                      "scheme",
                      "network",
                      "asset",
                      "payTo",
                      "amount"
                    ],
                    "type": "object"
                  },
                  "signature": {
                    "type": "string"
                  }
                },
                "required": [
                  "format",
                  "signature"
                ],
                "type": "object"
              },
              "type": "array"
            }
          },
          "required": [
            "offers"
          ],
          "type": "object"
        }
      },
      "tracefast-receipt": {
        "info": {
          "method": "contract-bytecode",
          "version": 1
        }
      }
    },
    "lastUpdated": "2026-10-30T04:20:00.069Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-30T04:19:59.89Z"
    },
    "resource": "https://mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/bytecode",
    "serviceName": "TraceFast",
    "tags": [
      "blockchain",
      "ethereum",
      "address-intelligence",
      "labels",
      "entities"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "TraceFast live Ethereum data: the current runtime bytecode of a contract as hex, with its code hash and a structural fingerprint that is equal across contracts sharing the same logic. Up to 24 576 bytes of code. An address with no indexed code answers 404. Path address: The contract address, `0x`-prefixed, 40 hex characters, any case. Docs: https://docs.tracefast.xyz/api/contract-bytecode.md"
}

What the leaf hashes

{"body":"333c562bb228a811a811841857b574167b0263043f6a6f79ad0bb512201707b4","id":1509383,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793472803207889,"prev":1262803,"subject":"x402_bazaar:https://mpp.tracefast.xyz/api/v1/chains/1/contracts/:address/bytecode","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xb7ecdf67c141434b42e5b13cf55130f34eba0548fb127a4b80a38f5337791d2d
2. 0x351ee370d59c8f2d18a51527db53a34106338066d95691890bb28a224b943b93
3. 0xdf10d2b90908b2cf9dc5537ab84f40fff2b699b0037a26dafd025f2d47735c22
4. 0xa1ad888af00cf2f0972f277401ef4756cf1e359e738c5c0aea17b6b3a3bc6ffb
5. 0xf05fd4be484ed8bba1b9f35e6addd6a0ec19f2ed533804a9742e6892ec18a3e7
6. 0x4dfbe157f5e6f03bbec18d914a1420038a0c19b73c82e4d5bf00cffae9f4b497
7. 0x542bfd753a9c08bb87887ec3006c96ff22306bb0c90f698889a9bedcf755f38b
8. 0xf09b95c37f4f6db90606d99df694f4356c52c33ebb66806db3e9dee8f3c08214
9. 0xa8fbfaaa4bcd94d41a9e484d1444c2c886d3ce2d0968cdf9eff54460a659f019
10. 0x16e47a3693ec158c109ec6513672b76b4a388754991ec75a07bc46984504eaf5
11. 0x14bbd545acadab45b4ba13175ee7c2fc0aa091350f2f20fe57e7d071ad6fb47f
12. 0x4c43bdd4abc7f74027388dc651137a061fab0f92ec7ba4b2e69fd9ee04a23306
13. 0x2e3af79e569e22a770a061aed37789a38fa8f77d55a49fabc9b98ec41109db25
14. 0x8185eeafe9adefad89b2d62fb2c2a6beb3fde0409e51deb7d5c1a3c4cb40d65a
15. 0x57afe240b626bf60f6af8c76404811e95ea5519f217fac382bd159177a8ec870
16. 0x2e1cd25ce4079da9bfa6219d7ffec992149add4cd7d5c5b2cfee9908c1c8a5dd
17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0