Evidence row 3959288

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://encoding.openverbs.com/v1/detect"
    ],
    [
      "x402",
      "https://encoding.openverbs.com/v1/inspect"
    ],
    [
      "x402",
      "https://encoding.openverbs.com/v1/normalize"
    ],
    [
      "x402",
      "https://encoding.openverbs.com/v1/transcode"
    ]
  ],
  "name": "encoding.openverbs.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "encoding.openverbs.com",
    "endpoints": [
      {
        "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.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "SGVsbG8=",
            "group": "body",
            "name": "bytes",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Detect character set",
        "tags": [
          "detect character set",
          "charset detection api",
          "encoding detector",
          "detect utf-8 bytes",
          "base64 charset lookup"
        ],
        "url": "https://encoding.openverbs.com/v1/detect"
      },
      {
        "description": "Break a string into its Unicode code points, each with its U+ notation, decimal value and UTF-8 / UTF-16 byte layout, plus total byte lengths.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "example",
            "group": "body",
            "name": "text",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Inspect code points",
        "tags": [
          "inspect unicode code points",
          "unicode codepoint lookup",
          "string byte layout",
          "utf-8 bytes inspector",
          "utf-16 code units"
        ],
        "url": "https://encoding.openverbs.com/v1/inspect"
      },
      {
        "description": "Apply a Unicode normalisation form (NFC, NFD, NFKC or NFKD) to a string. Reports whether the text changed and its length in UTF-16 code units and code points.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "NFC",
            "group": "body",
            "name": "form",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "example",
            "group": "body",
            "name": "text",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "27",
          "l30DaysUniquePayers": "5"
        },
        "serviceName": "Unicode normalisation",
        "tags": [
          "unicode normalization api",
          "normalize unicode string",
          "nfc nfkc converter",
          "unicode form conversion",
          "canonical unicode text"
        ],
        "url": "https://encoding.openverbs.com/v1/normalize"
      },
      {
        "description": "Decode a base64 byte buffer from one character set and re-encode it into another (utf-8, utf-16le, utf-16be, latin1, ascii). Characters that the target set cannot represent, or bytes invalid for the source set, are clean 400s.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "SGVsbG8=",
            "group": "body",
            "name": "bytes",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "utf-8",
            "group": "body",
            "name": "from",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "utf-16le",
            "group": "body",
            "name": "to",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "Transcode between character sets",
        "tags": [
          "transcode charset",
          "convert text encoding",
          "utf-8 to utf-16",
          "latin1 to utf8",
          "decode base64 bytes"
        ],
        "url": "https://encoding.openverbs.com/v1/transcode"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "encoding-openverbs-com",
    "integrationType": "",
    "isNew": false,
    "name": "encoding.openverbs.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.002",
      "currency": "USDC",
      "maxAmount": "0.002",
      "minAmount": "0.002"
    },
    "provider": "encoding.openverbs.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": [
      "detect character set",
      "charset detection api",
      "encoding detector",
      "detect utf-8 bytes",
      "base64 charset lookup",
      "inspect unicode code points",
      "unicode codepoint lookup",
      "string byte layout",
      "utf-8 bytes inspector",
      "utf-16 code units",
      "unicode normalization api",
      "normalize unicode string",
      "nfc nfkc converter",
      "unicode form conversion",
      "canonical unicode text",
      "transcode charset",
      "convert text encoding",
      "utf-8 to utf-16",
      "latin1 to utf8",
      "decode base64 bytes"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"88af93fbed93ed122b0adddd636f077071ed502a131b38836f0190a5272211e3","id":3959288,"kind":"listing","method":"sync.agentic_market/1","observed_us":1794076200859752,"prev":3755583,"subject":"agentic_market:encoding-openverbs-com","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. 0xb85bbdef3da855afb945608f2a4dd1537aeccf932e38dd30d66cd90759c27e5c
2. 0x4daf46af946f126198eee9a243642e88bf5979ba4cfe40b0537b2b50ebcd95d9
3. 0x0173ecd91cc60371448b4f72b5332db44e6ac62b30363b8a7a21c48152beda90
4. 0x29fe64d64d4015353b91ed276f0efa5e6de7ea9c90e0675ff8ae830c68501a87
5. 0xc6960dd40c817fc335e51baa85eca56da6659204364ceba23dd39e4741b1b443
6. 0x43e8b0eae57a953406fa4a44a23c8854cb3843baa2757ae8a4c9a46f112674bf
7. 0xfe2f2de9a632925e6dba5bfe67a07ede6331f6555e15bee5645609c134f3982c
8. 0xb90e2c6f78b2d5148768e015e568c6db08cc562e8d8446135314281fcd6cecd9
9. 0x18135ac5b522000f8eb81be2b3e580e1a65e612d536a5aa1bf4b68a6c213bc71
10. 0x0b4997cc95716fb25bc53c8e1f74e0f73ce74d7a7b4e7b0a016e9f7a7ce81b48
11. 0x70c3c19b440653e32825cbfdf44e5e8addbc5bdd7e420edd21fcfda2ac2bd84b
12. 0x4488ba66a7220073884190474c97901e4ec6199cc5fef3c590e97c08ccb0abd0
13. 0x0d8c5e754523e6e4a876e7fe9341fa7b94a14cd11d7a341b370800104a0ac37d
14. 0x7720754cd1d565acdb28ae2e3c2e759562843c986908d08656bf4c41e785a347
15. 0x2afbeaef1e4de4b2a6d70326e3dc41f9f1c65d4fc46630d217fc932790b0680c
16. 0x3235c8a33ac14441f1a12a6515f670286d48b48fa98eb1dce45d902e053abe01
17. 0x9ea7c2ecc6985da4b761b0f9096b7858b3ac8e3e47717c3840537fb2ff31c6df

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa