Evidence row 74865

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": 3,
      "l30DaysUniquePayers": 3,
      "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":"43e9047f10017e7b9c186649346322ba2b3a64b838815a40c4dc6282aa5a1fab","id":74865,"kind":"listing","method":"baseline/1","observed_us":1793025489510703,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x8231545d08055807a241aed573c894b2d520deed75c9bed3d5525f0c138d412d
2. 0x240a69ca482376d58d4885b14f812b1b6a69e34780cdbda111e0b97a9d3e322e
3. 0xaa9cfa467f00bc30c7bcf37ed4fef66a6f8c9a4ba4a06fda4328c2afb5eeae84
4. 0x23b71f1401cecb7f8bc77c7bc492d29c440a067bb7c3baaedcd98fba729d10e0
5. 0x03c3014ed94a6b9d44c0ee54a98efccd9415cbc0d3196b63e60e9f4e2273731c
6. 0x016f6a0208e20340da184e494b7ab8842340e46d9887c427b610bc335a34f922
7. 0xd10a669094a30f878752afcd6efe827014a3d2f61bbe2c9230585026c08a8943
8. 0x046e2bdab3dc7cfe491560ae387deedbb691c9f01680258db0c5aa072c6cb6da
9. 0x4d336dc3c5475661ad19f828fa29f4422fdc309afb352ee552382c0e264f2081
10. 0x7bf314ce864607e38419173b8ca20496acb0a600d828b634ce110759da75fc95
11. 0xc99774cfa2126cb7b4c49d6b3fd2510795689e2dec7886bdb1a009218327ef2e
12. 0x08155d70132f82e370214fc5b72194dfa6f5e57670b7bcf74776e8418302897e
13. 0x4d2ee986a690e903126f449b4e9e62d5572b350357ab4496a83488949b131c29
14. 0x0eff463856b0992d53ab7d8c0b97c71541413358bdd445710c1e4b6aeb4d8f78
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae