Evidence row 2201897

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://file-formats.x402tookit.com/magic-bytes"
    ]
  ],
  "name": "File Format Inspector",
  "owner_address": "0xb531320805c5bed1d46aeadcf4f008fdf172dbda",
  "raw": {
    "accepts": [
      {
        "amount": "20000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "extra": {
          "feePayer": "D6ZhtNQ5nT9ZnTHUbqXZsTx5MH2rPFiBBggX4hY1WePM",
          "transactionVersions": [
            0
          ]
        },
        "maxTimeoutSeconds": 300,
        "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
        "payTo": "DUPiupXtuox38dcGoXUKer5mAydCzmaHjrbQ66qeEm8s",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:137",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      },
      {
        "amount": "20000",
        "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:42161",
        "payTo": "0xb531320805C5BED1D46AEaDcF4F008FDF172DBDa",
        "scheme": "exact"
      }
    ],
    "description": "Identify a file type from the first bytes (hex): PNG, JPEG, PDF, ZIP, ELF, EXE, MP4, SQLite and 40+ more signatures.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "hex": "89504e470d0a1a0a0000000d49484452"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T23:43:22.038Z",
              "bytesExamined": 16,
              "category": "image",
              "degraded": false,
              "disclaimer": "Screening signal computed from the named public source. Not financial, legal or investment advice; provided as is. Verify at the source before acting.",
              "firstBytesHex": "89504e470d0a1a0a0000000d49484452",
              "matches": [
                {
                  "category": "image",
                  "mime": "image/png",
                  "type": "PNG image"
                }
              ],
              "mime": "image/png",
              "notChecked": [
                "anything beyond the bytes sent: a valid header does not prove the file is intact or safe",
                "malware or embedded-content scanning",
                "…2 more"
              ],
              "reasons": [],
              "source": "computed locally (published file signatures)",
              "summary": "PNG image (image/png).",
              "type": "PNG image",
              "usualExtensions": [
                "png"
              ],
              "verdict": "IDENTIFIED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "hex": {
                      "description": "First bytes of the file as hex, up to 512 bytes (1024 hex digits); spaces, colons and hyphens allowed",
                      "type": "string"
                    }
                  },
                  "required": [
                    "hex"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "bytesExamined": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "category": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "firstBytesHex": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "matches": {
                      "items": {
                        "properties": {
                          "category": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "mime": {
                            "type": [
                              "null",
                              "string"
                            ]
                          },
                          "type": {
                            "type": [
                              "null",
                              "string"
                            ]
                          }
                        },
                        "type": "object"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "mime": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "type": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "usualExtensions": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:54:14.948Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:54:14.702Z"
    },
    "resource": "https://file-formats.x402tookit.com/magic-bytes",
    "serviceName": "File Format Inspector",
    "tags": [
      "file-type",
      "magic-bytes",
      "signature",
      "forensics"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Identify a file type from the first bytes (hex): PNG, JPEG, PDF, ZIP, ELF, EXE, MP4, SQLite and 40+ more signatures."
}

What the leaf hashes

{"body":"a87de9cdc8ea61afd8298cbc88edc6c1a30e8053d71c241c2865a767dff75a6c","id":2201897,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810096752,"prev":null,"subject":"x402_bazaar:https://file-formats.x402tookit.com/magic-bytes","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xa6c73fe1c763fe671f9124bb6fd726a30bb5448d2e0e40c49c1dd571bad436f7
2. 0x5cd7e201220106f73f0beb050d1123e31e27f8e3bb81c0a5968c2890d03d6e4e
3. 0x14b4149d8e69f98319c34241d8a704575591cd8ff0418b3687928793ea91e9d3
4. 0xe8d30b8bd1c64d6c5822eb180994b4f989fd798bf6afd7d476ca1f7f0d540100
5. 0xeb9f99e7c2cba25fdfeafcb17b1cd847aa257720181f558ca830007ab2db0aac
6. 0x7a0aea2da3fa57de6e01d1b35aeee0f2a31675bab28f4526965f89a8a860b8be
7. 0x3341fecd7e71b6f8a4d41cabedba098b53b842bf73929f1e11581b878d247c18
8. 0x925216e062a6f5ad942723e047e9318cf64c0d4651cfe4d55f723362b614ff06
9. 0xce9333bc147f19134741366761746b8c13337330b2d451fdda8d4722f69b940f
10. 0x4c393ea31f0f4ad68584a6aa61b7f8e81d93a7a1d7950fb015910a77a670d6cc
11. 0xaf8fa9d5423baf511198048927f512b9030830f053f50daae89b4058cc8d00e4
12. 0xc6f69d3f6f4fe09a9fc212c8631ef7fd2534c303c7902f55a5a63805fdc57695
13. 0xec9b01ce49e2dd688fa78781733c888976342aaf0672176098d6561858941ddd
14. 0x7a6e52c5cebe3ec69d18cc200885d32108ba1be1b19f2da2ead8becbf3db3cb1
15. 0x7abf7290721a0b95be706db03c09de9df65bcba8e18ffe4616da43d9c31d6b0a
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af