Evidence row 279336

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://api.aventtech.com/validate/card"
    ]
  ],
  "name": "api.aventtech.com/validate/card",
  "owner_address": "0x5100a134d768415cc4a25d7bdbcfc44394d62282",
  "raw": {
    "accepts": [
      {
        "amount": "10000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0x5100a134d768415cc4a25d7bdbcfc44394d62282",
        "scheme": "exact"
      }
    ],
    "description": "Validate a credit card or payment card number and detect its brand. Checks the Luhn checksum and identifies Visa, Mastercard, Amex, Discover, Diners or JCB, returning the BIN and last four digits. Structural card number validation for checkout forms and fraud pre-checks (does not verify the card exists or has funds).",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "queryParams": {
              "number": "4242424242424242"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "bin": "424242",
              "brand": "visa",
              "last4": "4242",
              "valid": true
            },
            "type": "json"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET"
                  ],
                  "type": "string"
                },
                "queryParams": {
                  "properties": {
                    "number": {
                      "description": "Card number, spaces/dashes allowed",
                      "type": "string"
                    }
                  },
                  "required": [
                    "number"
                  ],
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-08T05:37:24.659Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-08T05:37:24.512Z"
    },
    "resource": "https://api.aventtech.com/validate/card",
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Validate a credit card or payment card number and detect its brand. Checks the Luhn checksum and identifies Visa, Mastercard, Amex, Discover, Diners or JCB, returning the BIN and last four digits. Structural card number validation for checkout forms and fraud pre-checks (does not verify the card exists or has funds)."
}

What the leaf hashes

{"body":"7addb21f70d1a520d3407a7f8fab371b9965cb8862d4a52c6dbd4da4172911e6","id":279336,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793042204218678,"prev":65195,"subject":"x402_bazaar:https://api.aventtech.com/validate/card","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0x10b5ef2fc9424db1add258a0834901b86b0e6f1394694a77502e921f3ead8ab2
2. 0x150abd1f66e79c9c738e909863da451429cf8a75104ff7868f97807a6baa556b
3. 0x4b0059e8abf1ac4c64ff0173a06270a3636a8cbe59689a983dea2caa7b66e229
4. 0x939756af0e697a14ad5292908e256bf7948eae1b0785d980e864ff365bc8b72a
5. 0xc743b7b6b1d753d022ff46ddaa1cc727bb21e53133d2b9151610fab191022704
6. 0x10dbe950eda3fac66fd1894cfd7bd3b6e669f70047b048b6473c6ef2c4c81368
7. 0x8f18626d01fc9a45ddda2dbb73b85210ca94030a0e28782b3670016bb66d408d
8. 0xe102eb5af482aee30fb3a6fcb54965ebdb3220ead495c5a30eeeeffc81b4444f
9. 0x231b144b92dcc0cce27b0ac4748d3d63cacca628e24de0289c2df8fe172b3eac
10. 0xb234a680a946c81645d904c5a9673cd568451da7aab924c45404866d15adfc3c
11. 0x27ff2940d5376ec3cc70015c126b688bae838938b2846686279ceb190eb69456
12. 0xc02d9eff6ef94d46d90d54320548f18fc3f05787047265548577569253c19969
13. 0x294f7935f78a896b5f246a7c9a7ee1b023720acdb03fff3cd549c63479848ec9
14. 0xb49e8c2564256e5322e375cb619d9ac70fd17c1d1eba9c991bba4cb6428f45cc
15. 0x60582ab4b41e72eb70eb0bce07fbf0fb4d2b62a8bad5be50f5d16d511adc746c
16. 0xc6a4d7899a0f442958e26505011190b7cff2483611c1b94eba9043e0ba9ac36e
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae