Evidence row 3970367

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": 1,
      "l30DaysUniquePayers": 1,
      "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":"6397493d526b276fb595423fdb6f4e4aa9b02d80f4b9e0579e8b058709ab0eb6","id":3970367,"kind":"listing","method":"sync.x402_bazaar/1","observed_us":1794083637124504,"prev":3766791,"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 2026-11-07 (195826 rows).

1. 0x0c1f2b16c092a9ec4f38f9385b0bbde64e79cae01b171de599f58dd1ec5a0ceb
2. 0x54204e93094d6df785598e947a4dcd6b4db2ba59f70d01a9336b0c9caf1ab8b4
3. 0xe3f8123b25dbee2247e30ad6ba3b98b7187144aa8e4824ce787cf1d7b19d5ea6
4. 0x0cacfc7ab606bafef323888e1adc6ff178c1db28a8b6dd3b426e39239f0b0a53
5. 0xb2efbb8c78f1bd0b457a6e4b12bff2b1523ec3583155aa60f5fd072492cb971d
6. 0xb33c4aa02b006eabc3d77297877b0e84c774b1df32230aafef0d7349f13f16c4
7. 0x855e76070fd2a6d87f4d329e0f14df2ffbf3d82291a2ae0a6cad77a993bf54c9
8. 0x64344d0d31ebcde20172790ea6a4ff5a2102d1e9996f57445b22eafbd5165a96
9. 0x103404f574f542be46442a9f60418b186717784d0635cf187a028733af2e5f22
10. 0x3bba3c93294bd733dbdaf2626b8f65c880c969d5323a205ade162aa9fe9a8221
11. 0xb20672d06d8bcb34b0e544dabef7ea04bcc1bd847f8b38bb13c6bbf9a609db6f
12. 0xddd95dcdd546f67880af162aa3f0a4ce440b454faa624b535f2f4205aff6835e
13. 0x837e561292e656fc83a7677ed6030f433727eb9ac2b26f99fcc9243d0adee4c5
14. 0xfdd7b2b79797e6e952d4f424ae23c7bdff01d5d174b3c27e3aa0f615e279d235
15. 0x648a3baa51de8aa55066ecdaef86a2d63e9b16b533148da0c58eba70048b858f
16. 0x80bdd907e4cabf074c5e8d919e88abbc805de47d0c5c142e281a67157f82926f
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa