Evidence row 283032

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": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        },
        "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": {
          "l30DaysTotalCalls": "3",
          "l30DaysUniquePayers": "3"
        },
        "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":"b58d4c28707eda293c8ae74bde151cb836167f45776a0cd8ca32693d5e6bed9f","id":283032,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793042660747104,"prev":265549,"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 2026-10-26 (296695 rows).

1. 0x9f172f320820246f3da399e04327f3a0226628b55fcfcb75dff7b4c78f5b54b2
2. 0xde1f585330d9def87400674b2fbb982836b83cc0989e80d59f9de7fc5a794081
3. 0xcf973fcb9c9ca5f9bf15da6652a45dbbe64c05783eddc837e20ad7fbd2b07f43
4. 0x8fd4acf0d9c4c34678fe786b1ab68c51faf795532db764ca8820313f78c8e7a7
5. 0xf5b49c1914d6f1993a4e4216a9a14a79ab4bee5df576b65112a9b4c19ad96290
6. 0xaf1ff280e4fdb91dad0468b3670a25315b06b9cb2f72aa4ad64cddac175b3a32
7. 0x2f131c200d140ea1b544718ad824ad0ae5a77d3c36c74b5a18c5f15aff7b7fcc
8. 0x4a1dd607227b09d543daaca70d707a1f4d777bf2f2e8a020a4ad26196d07e2db
9. 0x37ee73943865bf198a6ad0909a71ef6410546144bf4916090c84f20f6cf2e0ee
10. 0xf41043f542980b32be9b3ced5ce838546c4aba89c89cec784be33684bd2a251c
11. 0xb5a5da1d8cc5364d4e1e81f176a4bcbca86e02bf02b30e06db118bb7f2c487a8
12. 0x6367dad81ab5c2e6f424ad3e06310c9b75079293d62a08dfbde98ef993c35229
13. 0xf8d3e004d9a208d2c5e82ab676956d80f8a3c78387c61dad15a3a8269efee0d8
14. 0x6713795704ddd9c528d421fadd9cc96b0200a4ddbba84f88e718d4968dde888b
15. 0x62a900133713919f4eed33d8336876b7a6d538233b8a4f3ed03b29aa44f5bad0
16. 0x1ac20d30773e1f4f2f811540e9a99b5cca9177c9e2e029acc0d80cf3f1d11f0f
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae