Evidence row 117793

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://otp.openverbs.com/v1/verify"
    ]
  ],
  "name": "Verify a TOTP code",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "4000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Verify a submitted TOTP code against a base32 secret, scanning ±window time steps (default ±1) to tolerate clock drift. Returns valid plus the matching step offset (delta). A code that does not match is a successful result with valid=false — not an error.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "code": "example",
              "period": 1,
              "secret": "example",
              "timestamp": 1
            },
            "bodyType": "json",
            "method": "POST",
            "type": "http"
          }
        },
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "body": {
                  "additionalProperties": false,
                  "properties": {
                    "algorithm": {
                      "description": "HMAC algorithm. Default SHA1.",
                      "enum": [
                        "SHA1",
                        "SHA256",
                        "SHA512"
                      ],
                      "type": "string"
                    },
                    "code": {
                      "description": "The submitted OTP code.",
                      "maxLength": 12,
                      "minLength": 1,
                      "type": "string"
                    },
                    "digits": {
                      "description": "Number of code digits. Default 6.",
                      "maximum": 10,
                      "minimum": 6,
                      "type": "integer"
                    },
                    "period": {
                      "description": "Time step in seconds. Default 30.",
                      "maximum": 86400,
                      "minimum": 1,
                      "type": "integer"
                    },
                    "secret": {
                      "description": "Base32-encoded shared secret.",
                      "maxLength": 1024,
                      "minLength": 1,
                      "type": "string"
                    },
                    "t0": {
                      "description": "Epoch start offset in seconds. Default 0.",
                      "minimum": 0,
                      "type": "integer"
                    },
                    "timestamp": {
                      "description": "Unix time in seconds. Default: now.",
                      "minimum": 0,
                      "type": "integer"
                    },
                    "window": {
                      "description": "Steps of drift tolerance each side. Default 1.",
                      "maximum": 20,
                      "minimum": 0,
                      "type": "integer"
                    }
                  },
                  "required": [
                    "secret",
                    "code"
                  ],
                  "type": "object"
                },
                "bodyType": {
                  "enum": [
                    "json",
                    "form-data",
                    "text"
                  ],
                  "type": "string"
                },
                "method": {
                  "enum": [
                    "POST"
                  ],
                  "type": "string"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method",
                "bodyType",
                "body"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    },
    "lastUpdated": "2026-10-05T12:25:43.03Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-05T12:25:42.76Z"
    },
    "resource": "https://otp.openverbs.com/v1/verify",
    "serviceName": "Verify a TOTP code",
    "tags": [
      "verify totp",
      "validate otp code",
      "check authenticator code",
      "totp verification api",
      "mfa code validation"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Verify a submitted TOTP code against a base32 secret, scanning ±window time steps (default ±1) to tolerate clock drift. Returns valid plus the matching step offset (delta). A code that does not match is a successful result with valid=false — not an error."
}

What the leaf hashes

{"body":"52f95e1055c2063884fb3c74f6a3e03bf06e6d434002e9259e2af9f646b42c8e","id":117793,"kind":"listing","method":"baseline/1","observed_us":1793025611900130,"prev":null,"subject":"x402_bazaar:https://otp.openverbs.com/v1/verify","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. 0x917f60bf0a734241a9962cabe353f41654032b84e37053f4f2916b9d0327fbf3
2. 0xae8768b30efa3ad6f031c5bfd11df2acfc538c242d163edc4d3244821e6ece17
3. 0xc5335f3a37a180bae14cfcbeff3759c1f82bd9ea1b39e82303c376592c008c67
4. 0xc0ed1b12025139635fe90376f934b25eca6a4654d78bd334ba4c07da1012a582
5. 0x3f226feb939515a7ff9c5e9e6815ab993d2d3020da1e178bad7794fee27c9cc2
6. 0x91c2f657b35cf701a39e5f3237667ba95fd2ae98be6bbc49a85caf13601746c2
7. 0xd85775199b51c13091d0aa19568435c24f7d49221785324ccb11ded4b8a3b073
8. 0x53ccecd447cc2685cc1f0d38ec750992856cb6cc8c363608537fbe8f56fbf01d
9. 0x142bd0821391f4f4570870a90283a4e65e3ee17f262409a9a12cf46d2a9f33bd
10. 0x8f6f90384a3dbb0aa1512320438fce6c69c255af4b720c9519d9dab665dd6626
11. 0x6c9f1a764b7efa4ca549bf1cbbf8b397ce3c92cc35a0932f2dbf0706ae892c07
12. 0xe131b224ee3c295dfa790b458d9daa11e2a32e6131c280c6be7d92190c756a88
13. 0x45c1d3062bbe98a6b1540c7e2ccf6516eedd6ef07fdfeb1ba77ee6272970447c
14. 0xf0edabbb9ba0d643e5505d19d07637eb6f6aed0a1c7356af43ae7d84ae9ef0c5
15. 0xf0bd63870f0bb378fa300bd33563050dcb7b3e02b44eb3ee550c1c534ec4b246
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae