Evidence row 425587

What was observed

{
  "endpoints": [
    [
      "x402",
      "https://x402-lab.vercel.app/api/postcode/:postcode"
    ]
  ],
  "name": "x402-lab.vercel.app",
  "owner_address": null,
  "raw": {
    "caip2_networks": [
      "eip155:8453"
    ],
    "category": "",
    "description": "",
    "domain": "x402-lab.vercel.app",
    "endpoints": [
      {
        "description": "Location and areas for a Great Britain postcode: latitude and longitude, ward, district, constituency and region, as JSON.",
        "method": "GET",
        "parameters": [
          {
            "default": null,
            "description": "",
            "enumValues": [],
            "example": ":postcode",
            "group": "path",
            "name": "postcode",
            "required": false,
            "type": "string"
          }
        ],
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "maxAmount": "",
          "minAmount": "",
          "network": "eip155:8453",
          "scheme": "exact"
        },
        "providerName": "",
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        },
        "serviceName": "UK Postcode Lookup",
        "tags": [
          "uk",
          "postcode",
          "geocoding",
          "location",
          "address"
        ],
        "url": "https://x402-lab.vercel.app/api/postcode/:postcode"
      }
    ],
    "enriched": false,
    "iconUrl": "",
    "id": "x402-lab-vercel-app",
    "integrationType": "",
    "isNew": false,
    "name": "x402-lab.vercel.app",
    "networks": [
      "Base"
    ],
    "priceSummary": {
      "avgCostBasis": "exact",
      "avgCostPerTransaction": "0.002",
      "currency": "USDC",
      "maxAmount": "0.002",
      "minAmount": "0.002"
    },
    "provider": "x402-lab.vercel.app",
    "providerUrl": "",
    "serviceName": "UK Postcode Lookup",
    "tags": [
      "uk",
      "postcode",
      "geocoding",
      "location",
      "address"
    ]
  },
  "source": "agentic_market",
  "summary": ""
}

What the leaf hashes

{"body":"d0fc3341d38ae9fca5b035f3f7f0d0d3701cfb116b6868a98056e3745c9a785e","id":425587,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793086113790831,"prev":408002,"subject":"agentic_market:x402-lab-vercel-app","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-27 (273461 rows).

1. 0xb42e8a6dfe1cd3aa726a9f1a4901ee79e5169f469d64068103b726b0c608aa60
2. 0x3908394bbc48db3020b501a959493fd234cee3abf57982ab71e0ba90898eab14
3. 0x4defd2ae057976d5d05514c091985d829ca7af523df9d873eade4e3855589533
4. 0xca0e0155edf64a4165e0722b394d30742f4c4f293d2d9c6b914a94e908515253
5. 0xf06fdea3e18415d6e6a67f3c38863ca60db10f2a193354e8b6434f1a12a09790
6. 0xa599bae2501fe61e4fa98e5c0aa9ebb595d1f33470a03bdab18b56a232f50662
7. 0xfb0ba937dab4743e74590d74df89d8de52a57aff7858a1990c754d156d048472
8. 0xb920ce1431fd6f4e3a0058f0195c0b6d339a6e5f8617d5fe2fc6f33335fb8954
9. 0xb453973045d461028cb4506fef9e6218a986a7416071f2ed88a2fbcf3d35558d
10. 0x7efb94cf0e8a662765a8c6efbfdc9dd1bc38bb8ad63eb2e0dbae156f58153fc3
11. 0x43473c302050eee376e0169659011f058a2eb8fc7d53a2ea0d1198e0f6d2a335
12. 0x305c0e886bebb6df8123db384ccd0d5bfc3ddf1de5fbf4edca0aea32f7e223a0
13. 0xf1104ea7df082465ff9df25ed29be80a0ac7c1c6b25c289b5d2e6ae5e6331952
14. 0x87cb8935612c40b569de008a9bf8218cd24a06f74a7364a1654613d972fe00ed
15. 0xec7bb68216a4deb1960acfbbd75da88f7e468b58adb9cf3ec62f2790e46508b3
16. 0x64c405a28e8819716221eb2529fe4ce277ab08025e17e685cbd5ece75ceb75c7
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4