Evidence row 2201896

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://file-formats.x402tookit.com/pdf-header"
    ]
  ],
  "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": "Read a PDF's version and header position from its first bytes; flags junk before %PDF- and an invalid version.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "hex": "255044462d312e370a25e2e3cfd30a312030206f626a"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T23:43:22.290Z",
              "binaryMarker": true,
              "bytesExamined": 22,
              "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.",
              "headerOffset": 0,
              "major": 1,
              "minor": 7,
              "notChecked": [
                "the cross-reference table, trailer or objects",
                "embedded JavaScript, launch actions or attachments",
                "…2 more"
              ],
              "reasons": [],
              "source": "computed locally (ISO 32000 file header)",
              "summary": "PDF version 1.7, header at byte 0, binary marker present.",
              "validVersion": true,
              "verdict": "VALID_HEADER",
              "version": "1.7"
            },
            "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 PDF as hex, up to 512 bytes",
                      "type": "string"
                    }
                  },
                  "required": [
                    "hex"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "binaryMarker": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "bytesExamined": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "headerOffset": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "major": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "minor": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "validVersion": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "version": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:54:17.608Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:54:17.426Z"
    },
    "resource": "https://file-formats.x402tookit.com/pdf-header",
    "serviceName": "File Format Inspector",
    "tags": [
      "pdf",
      "document",
      "header",
      "polyglot"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Read a PDF's version and header position from its first bytes; flags junk before %PDF- and an invalid version."
}

What the leaf hashes

{"body":"6a935e2e137cfc8d3c66ddb768725f48555dfc8fffe2a2326af6edd623194008","id":2201896,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810091428,"prev":null,"subject":"x402_bazaar:https://file-formats.x402tookit.com/pdf-header","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. 0xc09342dba74b68b8ec1e44595bc306c7ee92b2827d7ac3895e99686e36fc4a38
2. 0x1106ac9e7e3259a4b12e3a9b434cf2e2244dff73b108c2ab09324eec3b2dcc68
3. 0xe34b842b19e367092d223d66f57f851c7d1cd20b8442b6d3b9cbfcfd6c18996d
4. 0xdc69822d726987a348b810823d2c033c56e48265ad948287baec67e89c5bf7be
5. 0x67b0b34adb779627c76db16df448656d68c1c0b5868f3239128ce05b0ce4a3aa
6. 0x56a8e6a81b695b43b079ad31069fc1a533d1e74b7cd6651e9403a9b258e2a552
7. 0x2d75bc0b2765e030dba9b9dcc866ec2812ed7b688799101ddfe018092b46f0a6
8. 0xc1a30f377b36917657f37911436ef578cdd8a2d60e7c23012d9e5b71920aaf90
9. 0xcded976df53b4b813ae36d4a91fe825774b32010c95a64b8a6d76a658d072b5f
10. 0x5c351eb959108fa008847322ad4e07245662a4a78edc2bc3c5476a41d6885e04
11. 0x95159983c258f8c4252930e33402334b4c774b96e6b0585c9fabf412a911ddc3
12. 0x8b992b36405eba70b3e3ccbd97fc3bf4370ba72ddf1ebf2e1db6ef25d910b365
13. 0x513d275f726a7e76afc5d1c5ea455e84ec639b5765f0d561d290fbac6c078a4f
14. 0x5483702efe692d367a569024f6ed01075bb22b39176302aa223f423906e01c1e
15. 0xcbfaf790331071a9b3499a4db6f9d951fe5d04baefda2c66846b52b023ab8ae5
16. 0x37d31d28d0bd3743650d57e9fbf999efa4592cac831267f83aa125335b35a16b
17. 0xdb8bd933619a267f9790faac9839143d202be46af284371cc369cdf683f897ba
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af