Evidence row 1262803

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": 2,
      "l30DaysUniquePayers": 2,
      "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":"a0072593bfdc5b87f5c45bbe1934b953616966230996788d6a7a39eeaf385f8c","id":1262803,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793385588173714,"prev":117253,"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 2026-10-30 (243099 rows).

1. 0x6c351c59cc9ecd97a5bcffb3411606fb01a61b4910f17d426540b1a61cad2e7d
2. 0xcd06f78f31197a50354b4383f2a6f587a3db43637e941727468795a0fd8133a2
3. 0xef35da84f20454934dd8606615c011add2ae1b8af443cd4917c6e742af1611ac
4. 0x071f78e5052cdb537d2fc908f6446be00040fc1f0dc2b312292d66880bea0c88
5. 0xc1dce9715f058f11e73f4b38a49231b091755dde9e51d06ca85ae8a0ae4fec65
6. 0x7a1a7291ecf81d2119b937423f0cf7ddf5f4c9e6859a85777a529a6d736ae074
7. 0xe4033c9c8db131f2613bb5272b3131b3aa2f6d9c05e5833c2d2d423d573d5428
8. 0x738b7182ad22049159866052ee995703f25f5e0d72ea30e906e553b8fd521b7c
9. 0x07e880d8953a034a19a0d3d888a331f97f2b9c4ed8be69e22726ef13d596f3eb
10. 0xd7ed495dc7bada99f8836c52497df26f3f4462d07d55d5488d5ff5d087a9d774
11. 0xeeaa7cf434ce258bd104938fdd286b223d22b7af8d5f135c4b1fb8d42293c53a
12. 0xb8ec68922623837ba81250fe50c2024efe5b0857186a060682b8ce9bf2bbd784
13. 0xc225d4c733629f2989cbf475108685bcfcb582ffb150d0eb6a144bb4f04abc02
14. 0x8202f11cea96bc04aa8008604bab4ab58756d5320e52685eb327ac1bb08a0ee6
15. 0xdf25f5d38e3fb54d3e66e3bf876db529f619041e0d21f0bc35b80003418e3d9c
16. 0xdbaaffa44665d1fa60d33d2c4075bd87629b76d01a6ee63e621e78590303b56d
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861