Evidence row 2202029

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://crypto-math.x402tookit.com/encoding"
    ]
  ],
  "name": "Crypto Math",
  "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": "Convert public bytes between hex, base64 and base64url (RFC 4648) with strict decoding and expected-length check.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "expectBytes": 6,
              "from": "base64",
              "input": "Zm9vYmFy"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "asOf": "2026-10-11T23:46:28.243Z",
              "base64": "Zm9vYmFy",
              "base64url": "Zm9vYmFy",
              "bitLength": 48,
              "byteLength": 6,
              "bytes": [
                102,
                111
              ],
              "bytesTruncated": false,
              "canonical": true,
              "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.",
              "hex": "666f6f626172",
              "lengthExpected": 6,
              "lengthMatches": true,
              "notChecked": [
                "what the bytes mean: a 16, 24 or 32 byte value looks the same whether it is a digest, a public value or a secret key, so send public values only",
                "ASN.1, PEM or JWK structure",
                "…1 more"
              ],
              "reasons": [
                "Base64 and base64url encode 3 bytes as 4 characters; base64url swaps + and / for - and _ and usually drops the = padding.",
                "Length check passed: 6 bytes."
              ],
              "source": "RFC 4648 encodings, computed locally",
              "summary": "6 byte(s) (48 bits).",
              "verdict": "COMPUTED"
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "expectBytes": {
                      "description": "Expected byte length to verify, e.g. 32 for a SHA-256 digest",
                      "type": "integer"
                    },
                    "from": {
                      "description": "Input format: hex, base64, base64url or utf8",
                      "type": "string"
                    },
                    "input": {
                      "description": "The value to convert (a hash, public key, nonce or text; never a secret)",
                      "type": "string"
                    }
                  },
                  "required": [
                    "input",
                    "from"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "asOf": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "base64": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "base64url": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "bitLength": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "byteLength": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "bytes": {
                      "items": {
                        "type": "number"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "bytesTruncated": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "canonical": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "degraded": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "disclaimer": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "hex": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "lengthExpected": {
                      "type": [
                        "null",
                        "number"
                      ]
                    },
                    "lengthMatches": {
                      "type": [
                        "boolean",
                        "null"
                      ]
                    },
                    "notChecked": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "reasons": {
                      "items": {
                        "type": "string"
                      },
                      "type": [
                        "array",
                        "null"
                      ]
                    },
                    "source": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "summary": {
                      "type": [
                        "null",
                        "string"
                      ]
                    },
                    "verdict": {
                      "type": [
                        "null",
                        "string"
                      ]
                    }
                  },
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-11-01T22:46:09.746Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-11-01T22:46:09.464Z"
    },
    "resource": "https://crypto-math.x402tookit.com/encoding",
    "serviceName": "Crypto Math",
    "tags": [
      "base64url",
      "hex",
      "bytes",
      "encoding"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Convert public bytes between hex, base64 and base64url (RFC 4648) with strict decoding and expected-length check."
}

What the leaf hashes

{"body":"832ba468d9966f597136b0221cbb512298f27ec0b2f2e1d002942252f897ecf8","id":2202029,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793646811413119,"prev":null,"subject":"x402_bazaar:https://crypto-math.x402tookit.com/encoding","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. 0x9578162b19df1ac81c72a5aee29b078da31bf1fa9669d3df8cb034258fbfbeea
2. 0xe4d014c2b5d50888a6ec11306df8144df05b3c82457eeebbdaadadb3206a9c72
3. 0xb4b1d9fddbcae92ef2b6955564f5efbadea2a36da3414d8c035077f6fbba2697
4. 0x02895b8f088c0243e3aebbdda019d865119437f7fda8806d638e183ac6c4ea82
5. 0xf72b265eee53a47e60b2a4d55d74f29a4ae21a5ebc7e7794f132465790206fec
6. 0x0929cf208dd254ef8c8b8219066b959210f05b19b190f395f86aba43e2a62c97
7. 0xd0038421c25395b2ad550044f72635bebd91334f59c1f2ef9940a0d07e1d78de
8. 0xbcbe86d4e2df95252402f5af0339a7cf1bee2d49b4d262ba6f60fce3d5fa8dc4
9. 0x5c9a72df9df034f7f7a3b0cbaa0ab366d005b8923ce590906c5a1bedc67f8742
10. 0x59dbb3ec63cd02e1a2642e21d00eef72e8f7815a31f6858afdd4607fac843fe7
11. 0xefe11a1343a9c2d7a93b447d104bc20b288de6e17292fa152c6543657640cb1c
12. 0x93a479000997489c9f10f23b0bab5b0ff25afee590d626a4bbf85ac315b6178f
13. 0x80c229343462b4db0b5706d7cf049c63be6fca4613d1e49d2d90b6c7dd36074e
14. 0xece99d4dfafa93913edbe131eb22b3d7ab2648b58b5bd9dcd361be4f8953b107
15. 0x5d92631d189bd0292c27a05f85a5ec38ec5f4197dfe4660eb991dc6a511e25a6
16. 0x5e23ec5954c11a4530aab8c635a72b12bcfeb6fcb03c6cb1a990cc1743424543
17. 0x1805ef693fbdb2c23fcb61616f830408ca89bec1dc5b68ee47a770ffc0b9760a
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af