Evidence row 2204

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": "3",
          "l30DaysUniquePayers": "3"
        },
        "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": "3",
          "l30DaysUniquePayers": "3"
        },
        "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": "3",
          "l30DaysUniquePayers": "3"
        },
        "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": "3",
          "l30DaysUniquePayers": "3"
        },
        "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":"6b3aed491e1d7446c9c15d510f8dc919144b00b34de2bb7f8624cb4aa6f933cf","id":2204,"kind":"listing","method":"baseline/1","observed_us":1793025261448179,"prev":null,"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 2026-10-26 (296695 rows).

1. 0x2066914d9c3249d251ba514ad9da14a020a19e6d16fc52af84684317f3ad1a2d
2. 0x67c02b3056224eb8357ac556fecc966433311f49e262974d49181d25f3190cb6
3. 0xb73a2e8ef51478cec4175970b1f4405d3e36bfc102b2bc88cd58e1929fdb21e9
4. 0x0c29ce259ec45f3a851bd48979cfd71230738e7d2f07a3a3ebb872d9074c362f
5. 0xe4d39e8fb8c804af814ce33e2a2c2649a35f8b2c8ccde7376f4affbc0bb01fd8
6. 0x04f0888ff98a5964aca08835e5afbf69443023062d437a2200c2548e1c87219a
7. 0x78e4548a7ca3c9a04eaaec48ab0452ebf6d3391233dc6851fc5d5be75cecdd19
8. 0xe592bc768c99dd3c47541da15c6036e5f2af32a8d7a7b1479fa22f05fbd4ed7b
9. 0x8c251767f8fb371a210d42fea0289330b8d746b5c7d851af02e626d7b48f3fb8
10. 0x4be42e002361db392d6bc044d985a656aee097e347099c025de6e9dea367ae4e
11. 0x057e71ed555693238850b77237df28dd2661cf85c88138365b7e42941201ad01
12. 0xfde157310fc8513767b162378ca9ceefb2937c374b7381a8887f7ccba8ab5a80
13. 0x9d75d4d3ab6219edefa04be60b32fdd56be7a7672f370a5115f02f7b098ecd27
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae