Evidence row 3959956

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://unit.openverbs.com/v1/convert"
    ],
    [
      "x402",
      "https://unit.openverbs.com/v1/list"
    ]
  ],
  "name": "unit.openverbs.com",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "unit.openverbs.com",
    "endpoints": [
      {
        "description": "Convert a value between units — length, mass, volume, temperature, area, speed, pressure, energy, power, digital storage, time, angle, frequency and more. Unknown units or a conversion between incompatible measures (e.g. kg → km) are rejected as a clean 400.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "km",
            "group": "body",
            "name": "from",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "mi",
            "group": "body",
            "name": "to",
            "required": false,
            "type": "string"
          },
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": 5,
            "group": "body",
            "name": "value",
            "required": false,
            "type": "number"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": null,
        "serviceName": "Convert units",
        "tags": [
          "convert units",
          "unit conversion api",
          "kilometers to miles",
          "celsius to fahrenheit",
          "kg to pounds"
        ],
        "url": "https://unit.openverbs.com/v1/convert"
      },
      {
        "description": "List the supported units and their metadata (abbreviation, measure, system, singular/plural names), optionally filtered to a single measure — a discovery endpoint for choosing valid `from`/`to` values.",
        "method": "POST",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": "length",
            "group": "body",
            "name": "measure",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": null,
        "serviceName": "List units",
        "tags": [
          "list supported units",
          "unit metadata lookup",
          "valid unit abbreviations",
          "measurement units api",
          "discover conversion units"
        ],
        "url": "https://unit.openverbs.com/v1/list"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "unit-openverbs-com",
    "integrationType": "",
    "isNew": false,
    "name": "unit.openverbs.com",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.002",
      "currency": "USDC",
      "maxAmount": "0.002",
      "minAmount": "0.002"
    },
    "provider": "unit.openverbs.com",
    "providerUrl": "",
    "serviceName": "",
    "tags": [
      "convert units",
      "unit conversion api",
      "kilometers to miles",
      "celsius to fahrenheit",
      "kg to pounds",
      "list supported units",
      "unit metadata lookup",
      "valid unit abbreviations",
      "measurement units api",
      "discover conversion units"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"8ae5e63fbd28ca50285b0889989712f237b2fd9b3f3cdee8edc6a93506f2ae8b","id":3959956,"kind":"listing","method":"sync.agentic_market/1","observed_us":1794076232529023,"prev":3439429,"subject":"agentic_market:unit-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. 0x1d0008c9959d6fc924067db2d7777941ea18b7443fb8cec74ae19f12e64fcc7a
2. 0xc11e73f6d56f3929409d1c3a9ee19dec413f7bfbe0f415f5201723f2008d50e7
3. 0x430d7aa798fb5570e5f0d90ae1c9966deb8aa49a59370b9d98fe5571205665f3
4. 0x975daafe87f90d385a4013d5cf1d1d08257007f30884c058b62593188c813fc0
5. 0xa7dea16a3a050ab9df1baf99ecae9856f665b608e3dfb54564566c5adfa99113
6. 0xd0f326ab74e46ac0b07647563e8f8d82fdaed26ee21a457619ed0371abdcd472
7. 0x9a1780c0f5c464c97e843042428b3928d1a14418ddfa8bafa79077401ca24f38
8. 0x0e1a69513e79973dc2bec2540fb764d5b686547e18a1c6b29d73c1fa2fbe54f2
9. 0xa2f6052a50958ccac54a58405ccdfa4e3b011490c51f00e04ec0bbface4d5080
10. 0x8dd22d43eae605fbc0a2fbf4ac3eeed3eaf1044d1acfb9cfa14a229fbda815a8
11. 0x5f4246bdeecb81a9746fec53aa17a84838b125d128584fea8f677616c9a3e7e7
12. 0x8286bf28ad387feae00000337f73fc646a2c217f8f28c7b4de9e52ba98337408
13. 0xe2b00eb32b7e9e6778d88bade9a7d19a468a8db8d20e735a3682cb3a61c2b621
14. 0xfc9ab88d5cb08cae376d37d3f24517c7a2cd94f277b0d505932d5ac795e4c6be
15. 0x22002567dfb80a697b73b13f0cc7ab99ac0c0bd9ea84bf4883eeb09f86036e24
16. 0x80bdd907e4cabf074c5e8d919e88abbc805de47d0c5c142e281a67157f82926f
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa