Evidence row 75472

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://format.openverbs.com/v1/infer-schema"
    ]
  ],
  "name": "Infer a JSON Schema",
  "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": "Infer a JSON Schema (draft-07) from a sample document in any supported format. Types are inferred, present keys are marked required, and heterogeneous array item schemas are merged. The result validates out of the box with /v1/validate.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "data": "{\"name\":\"Ada\",\"languages\":[\"en\",\"fr\"]}",
              "from": "json"
            },
            "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": {
                    "data": {
                      "description": "The sample document to infer a schema from, as a string in the `from` format.",
                      "maxLength": 1000000,
                      "minLength": 1,
                      "type": "string"
                    },
                    "from": {
                      "description": "Source format of `data`. Default json.",
                      "enum": [
                        "json",
                        "json5",
                        "jsonc",
                        "yaml",
                        "xml",
                        "csv",
                        "tsv",
                        "toml",
                        "ndjson",
                        "ini",
                        "env",
                        "properties",
                        "plist",
                        "querystring"
                      ],
                      "type": "string"
                    }
                  },
                  "required": [
                    "data"
                  ],
                  "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": "2026-10-06T16:55:29.503Z",
    "quality": {
      "l30DaysTotalCalls": 1,
      "l30DaysUniquePayers": 1,
      "lastCalledAt": "2026-10-06T16:55:29.228Z"
    },
    "resource": "https://format.openverbs.com/v1/infer-schema",
    "serviceName": "Infer a JSON Schema",
    "tags": [
      "infer json schema",
      "generate schema from sample",
      "json schema inference",
      "sample data schema",
      "derive schema from json"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Infer a JSON Schema (draft-07) from a sample document in any supported format. Types are inferred, present keys are marked required, and heterogeneous array item schemas are merged. The result validates out of the box with /v1/validate."
}

What the leaf hashes

{"body":"5e253323f0f6607bedf0f6b2dffb942f1532148214d3218597f9864aca86e3c7","id":75472,"kind":"listing","method":"baseline/1","observed_us":1793025490694131,"prev":null,"subject":"x402_bazaar:https://format.openverbs.com/v1/infer-schema","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. 0x65971efebaf546ea2912ec4a11d76a13231a2a318341580147e53a4899511162
2. 0xb862cd9e24438a59c764db3509220eb70f4ae8ba80043f27f2f985cc0738d13b
3. 0x3ad1b2c2dfcc363cbdb2f4019e088f71b583bb3021af1030a3013c20fb12d309
4. 0x2cfe838fe0c79a6c14e56fba612f8783749c159e841f4f109942bb3984f42bdf
5. 0x81e52d3384b57533ca95b7e179384a7234dc65ae4a7ab2d74445d39992997df1
6. 0x76377a43e9d32757c081de1dabd03cc5dcfa7db781ef994e2ab6acfe2a74b42a
7. 0xaecb0ecdc53a89d49f325a4581453ebad617d89169a9aa12b7debb917507bb8d
8. 0x5274810c854f66343b083c99464157e28952e9e2354a6cfcd1bdb13e9a170932
9. 0x61265e6f546630d1b2e8062415c704111501a1eb9cf68051cc6a4cdcc97f8f08
10. 0x5296420e1acf9644fca56dfcfebe9911f7cbd593b603e3a280043d869ff6edc4
11. 0x2184826674dda59cfc6d24bc12b2c70a5f4db29f874e67fded919c1410503d2e
12. 0x611b1c1b68d04a71934006e383071a8f3836400d60beb86d81dd038bc102029f
13. 0x13f4b94ecf613d585c952b5363dad2b247a55371eb8e358bb89dc033e83128b1
14. 0x9a79c65e077cd9da9d436b3ade6f5ddc0d244510c4d5903ef2f02d81205f7666
15. 0xa2d436d488e3600b0e5c3e3ed9c9234cd52853c59830b786334fd0c4292d9f40
16. 0x47b89901b0f07938a6b9a66ddf35683903f79d756a7c7763665fd632758b08d0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae