Evidence row 3766791

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://encoding.openverbs.com/v1/detect"
    ]
  ],
  "name": "Detect character set",
  "owner_address": "0xb3f4de103f34b99f0da19b4f16d6b53a14c2194a",
  "raw": {
    "accepts": [
      {
        "amount": "2000",
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "maxTimeoutSeconds": 300,
        "network": "eip155:8453",
        "payTo": "0xb3f4de103F34b99f0Da19B4F16D6B53a14C2194A",
        "scheme": "exact"
      }
    ],
    "description": "Guess the character set of a base64-encoded byte buffer: sniffs a byte-order mark, then falls back to ASCII / UTF-8 validation and a UTF-16 NUL-pattern heuristic. Returns a best-effort charset with a confidence label — a low-confidence guess is still a successful 200.",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "body": {
              "bytes": "SGVsbG8="
            },
            "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": {
                    "bytes": {
                      "description": "Base64-encoded bytes to inspect.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "bytes"
                  ],
                  "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": "2026-10-25T10:38:05.868Z",
    "quality": {
      "l30DaysTotalCalls": 2,
      "l30DaysUniquePayers": 2,
      "lastCalledAt": "2026-10-25T10:38:05.603Z"
    },
    "resource": "https://encoding.openverbs.com/v1/detect",
    "serviceName": "Detect character set",
    "tags": [
      "detect character set",
      "charset detection api",
      "encoding detector",
      "detect utf-8 bytes",
      "base64 charset lookup"
    ],
    "type": "http",
    "x402Version": 2
  },
  "source": "x402_bazaar",
  "summary": "Guess the character set of a base64-encoded byte buffer: sniffs a byte-order mark, then falls back to ASCII / UTF-8 validation and a UTF-16 NUL-pattern heuristic. Returns a best-effort charset with a confidence label — a low-confidence guess is still a successful 200."
}

What the leaf hashes

{"body":"2d782820ef2a812c9a1cd2876b8191b6b81bc4b746371f394980b46ecbf219a8","id":3766791,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1793996745113267,"prev":74865,"subject":"x402_bazaar:https://encoding.openverbs.com/v1/detect","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-06 (303443 rows).

1. 0xf97d535e955e62739595509c9f4f274a4a6f62204d53714c99d59871d798bb79
2. 0x9374e8a6bdc7b0708d04fda15ef29959f82d3e9f5c2b488409957336bb1c72d5
3. 0x953f871e387881a015d318dc0b31aa5374df172c8206e605371d8db93f1502c0
4. 0x5d79dd3d48b469a6fbb251afa81dad7b4e707088db7d245f4034655558dd0875
5. 0xc3352a10fd168e87e8d8f48f2d49c610c1963e4baa56521c574d55418fc8b028
6. 0xe2dec7490577ac2a41ba491c42b35410a780522f3579ec103493d3cd5629248d
7. 0xff4808d88638ebc2b3f0ee27a2e86111cbce65fe2dbd4c5f82d8b69694746824
8. 0x877f989d564f355b338c5b6786039a060624397767b7cf5cc2a7739008843f42
9. 0x6b4e2fb34c4e0ca9dbf5ce5263544dd3b3b9fa3df836fdfd53faae11c2581364
10. 0xbb46ed55eb3feb52e5f62bd1c49e5cd456bca4420b979fb5e0f768d593dfe8be
11. 0x88e4bf71c36a87c9b93e42e89a0de647dfb1ffb0996242c745374cd7b0c43213
12. 0x002d4d2332b6d6d035662bfd55b0d66d54bd68c054837f8d4c27359d6aefbb66
13. 0x4b73a433b9ae93404a8d07a5cfc0c3e56faff97df16d84b9926cc2c4072d26a2
14. 0x86593ac15f658012908c6be3447438c3409f4e6b92fd02ad8b0b2a8f74233080
15. 0x4d1da9738e22475b7194f6dd7a6c3348b6abb938507afdcb6452d859f52556b2
16. 0x0ab273486ad4e41bf08c741b20b2ee12e0fc87eaa429a5467c58fd3be34409b9

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1