Evidence row 3439429

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": "1",
          "l30DaysUniquePayers": "1"
        },
        "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":"89c698e2db96a46c15b4e0c21461930a4898fae340e1c57bc5363eabd347aa6b","id":3439429,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793903214154465,"prev":1784792,"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 2026-11-05 (322504 rows).

1. 0x751737c15a5ae001fc844f50558d12dd430ec6ef295d550cc308469b63e5c02f
2. 0x8010444408ea05f2ea837ceaee504b6714e61becca8319af719eef3d9623b7e6
3. 0xec07c0a59847fd012ac9e1f38440e40901e9779d460dee312efb92b0a901e771
4. 0xa14127098d7520b711b365221d9376b64e281cb3a9c386ee4892ab973b16ee25
5. 0xd5350b4545c7648d7182b65f6726a2d92de02bc183742e97723cb33c346257a8
6. 0xd7d6ca0cb9b4330d0ef7c92187039315c669a5247be7f979d3b68633ed4f065d
7. 0x296ee39608c31b315fc159151effd061a7a311828a2dc17dce58b18c47b074be
8. 0xf25883d0d0ef52c4f60a51c9483f690260f366a64310f46ce0b993bef50656d7
9. 0xc40336b0632db095c89cab14b8be33345966aec1666afed6e7b1b500ca665a11
10. 0x8e58de4b25358e52e7eda4573dbfe4284feeb9600aac6a1e595268fad765f226
11. 0x3f7595cbfdb411fdab191b399d12a056cadbac13f31968c6d6ec836032005ee6
12. 0x7d961fd0f6a72244e8b15a26a354e745e57a89861761c1b8fe6b707ec5464fc2
13. 0xcd10cdac83e7a4f14b285d956e9d7858d35953837d438fafb62fb1e7b319f218
14. 0x7a97b9b4888ef386a7abe73f8d9c076a7ebfba8bf58a95a273cd4304e478a2a5
15. 0xb5ea076f0a9490f58daaa0cbe915aa5dfdfe460bfc500eaea09b59c1d753d699
16. 0x3b5d12e41df15017099876c1435af6ce1c7a30cfddd96040c3878ac62de1dbc3
17. 0x7e5b4628b4269525ce0744fb873651b9d7be5748de44b7e6b858af09c7e30bd8
18. 0xfb4e1f4d701ae273fb0cd57757f659e327608e5561a752b2099b436618493c84
19. 0xf72fe7c4860b9addb17aac4a00b8afc2f8085836173f10f31697c3d192df119b

Day root

0x9f0215efb0252701dc86d5600ce95f276cccc716759bf112525ae863f698d128

Chained

0xc54ddff800630c6cd9656f99e7d6a61adce99bf1cea37121600598b0a9a720d2

Published

On Arc Testnet, block 70942081: 0x88f612ad94ca63af4e4e9faab9f34b665b41f03828afac1571ad013cc62bba94