Evidence row 2201894

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://file-formats.x402tookit.com/webp-info"
    ]
  ],
  "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 WebP's width, height, lossy/lossless/extended format, alpha and animation flags from its first 30 bytes.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "hex": "52494646240000005745425056503820180000003001009d012a01000100020034250a04ced8b3"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "alpha": false,
              "animation": false,
              "asOf": "2026-10-11T23:43:22.807Z",
              "bytesExamined": 39,
              "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.",
              "format": "lossy (VP8)",
              "height": 1,
              "notChecked": [
                "bitstream validity",
                "frame count of animations",
                "…2 more"
              ],
              "reasons": [],
              "riffSize": 36,
              "source": "computed locally (WebP container specification)",
              "summary": "1 x 1 px WebP, lossy (VP8).",
              "verdict": "VALID_HEADER",
              "width": 1
            },
            "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 30 or more bytes of the WebP 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": {
                    "alpha": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "animation": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "bytesExamined": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "format": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "height": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "riffSize": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "width": {
                      "type": [
                        "null",
                        "number"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:54:22.956Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:54:22.787Z"
    },
    "resource": "https://file-formats.x402tookit.com/webp-info",
    "serviceName": "File Format Inspector",
    "tags": [
      "webp",
      "image",
      "dimensions",
      "riff"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Read a WebP's width, height, lossy/lossless/extended format, alpha and animation flags from its first 30 bytes."
}

What the leaf hashes

{"body":"1a750da9efda7edddfd03d0eacf3192a98dddbe9872e595dc911c6c08f6706c6","id":2201894,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646810082228,"prev":null,"subject":"x402_bazaar:https://file-formats.x402tookit.com/webp-info","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. 0xfe3355deb202699658a688c7e30806317e66394db3ff4aecdc3fdf4d9d1c1876
2. 0x730a05d1305b0bc7cf23143a48d750b3bcdb2b1782e460f0915402a33782d27e
3. 0x8a6c478724df79d6421861a66753af899bb1a005e41cac6b6475b46b9a27686e
4. 0x4b923421c62cfc822d5a29d1d86ca37132901d589ece704461f90d8c8c4f5c89
5. 0x09e7ce506e706df1083cd7b56731ded27af64981eceaca8dcc9691dddc661757
6. 0x751330fbf33ece13af103f8b0972879f2352dab4e0dd3c5abefb0b90237b3ef8
7. 0x55216e45ecd4d410edf41cff434e685b5be1dcdce3b027c931fea49078b7ab20
8. 0xc03f665c5ad66a192952e0143a878a348fe4aece68ea0150c1c85990be380ab1
9. 0xa36ebc81a621bf244494bd9b835efe0439d9b9d80ba6739fa79fb7129649d6db
10. 0x3d9a759e51911e8b9c4fb2961369fdb88f7ede464bbe9c9e8155373312725994
11. 0x809f7ca0c2751136c11aaa1b7cf40ea295c49d1e9dda5eca68178053a1104a49
12. 0x558609da34276e08016027f0ba334013ad7a47d8258758a41e477a91a04eb076
13. 0x2612b2a6ca482d4e1e568f2a6d1980f6401f76dd9a2480fd196bb762b9e1c71c
14. 0x59ed3c823c7507ae1b2993d19eda543383739dde961b25c4e0927023fff6be12
15. 0x4068a4306db47ea0eae5f76e5137753caa3dbb132dca6a61a4d6c1838a52700f
16. 0x25127db2e775737b2874f6a159f7c1bf984317eea6482e94589c3ef4c5ccab32
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af