Evidence row 117791

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://otp.openverbs.com/v1/totp"
    ]
  ],
  "name": "TOTP (time-based)",
  "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": "Generate an RFC 6238 time-based one-time password from a base32 secret. Uses the current time by default, or an explicit unix timestamp (seconds); configurable period (default 30s), digits (default 6) and algorithm (default SHA1). Also returns the counter and seconds remaining in the window.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "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"
                    },
                    "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"
                    }
                  },
                  "required": [
                    "secret"
                  ],
                  "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": "2026-10-05T12:11:03.475Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-05T12:11:03.207Z"
    },
    "resource": "https://otp.openverbs.com/v1/totp",
    "serviceName": "TOTP (time-based)",
    "tags": [
      "totp api",
      "generate totp",
      "time based otp",
      "authenticator code",
      "rfc 6238 code"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Generate an RFC 6238 time-based one-time password from a base32 secret. Uses the current time by default, or an explicit unix timestamp (seconds); configurable period (default 30s), digits (default 6) and algorithm (default SHA1). Also returns the counter and seconds remaining in the window."
}

What the leaf hashes

{"body":"78a5a08d7055d2f9db59e8db25974455969061a483fee2113ce6b3cef65d7a06","id":117791,"kind":"listing","method":"baseline/1","observed_us":1793025611898236,"prev":null,"subject":"x402_bazaar:https://otp.openverbs.com/v1/totp","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. 0x57e2a89f5baece9072b25d83e4cf9ee59eb78609efb998f520a2ea8be2457b3a
2. 0x490d67ba3e2ed6d9ee3463d33f6b1a854bfb58b559d2192f29878d23a88bd576
3. 0xa1233f2af8dd383bf7f8a4b84116173d52588ad85a0c8f2ef6964ee0aa8c95ad
4. 0x7448addaa7774008ae09da40684a7564cfb773b66254b37d2acf498edaa06276
5. 0x2b3e19a3e5ce641c54d478932a11f50b5bda76936349639746e676ea63fae96d
6. 0xdd6828202bef5f1b1c02b52b1746863b417c737bc8d2eece204ae1b6e90e8674
7. 0x1d0b3d3e3b4bb63ac46c4250f0b7a4e4e3f5ca570a3055c5128e00a9b7ef0f7d
8. 0x2d7cb098e202dff99deee9744be3f1086d65b65c542d3183838b8f15795a97d9
9. 0xe53542ed751813d1a6d523062a23ac38392574080ade6d92b1ed3090a474dc4a
10. 0xda3bffd0a7c24c98da7dc5357e8d748010f4817bac4b377a94cd382883fc809a
11. 0x86f49d35fee840c62060e3a6cbc75237dbfdc70dd7439506d3f085c9cca8e4f2
12. 0x01ecb94c2efbfb8e9050ebbd813fbba80bbcbc345f98de707345bc4bc88c94e8
13. 0x8ba3430866b4c11cea7eba9923ee4fa8a5074849df417006e4441426c1f13056
14. 0x5cdeb4648502e0633d01cc4f3379d48cccb9d4f528565b2868eb93db0df9e829
15. 0x7726154b91b2ad65b13849ef6cb6443b1f0ff113a3089c9bd5f2bcfc16be099d
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae