Evidence row 408002

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": null,
        "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":"97f51811c8d439ecc968b104736c78a7214a0370baa4369d5ba32fa4a7716054","id":408002,"kind":"listing","method":"sync.agentic_market/1","observed_us":1793080291091315,"prev":null,"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. 0x5b423f051f0ee8258d7314fb576c85fce2f4da617d05dfd4a06c31f345a65f8c
2. 0x277472b75fc48d2863993093b09de844162e3fc8b903926addf454316064f8ae
3. 0xe3b78a1f0fd20a4de3b071c430aacb587de1c4368b5764a7e3eeb374a734cf1f
4. 0xd7385bc49867c095ba6b74bab9f0f3da7ea454dd7bb62f65c7a339475e75e022
5. 0xe533f286e721457e23471e72f63da7ae1db270fda13859d78061d27454f2b50f
6. 0x9933737eb5d80e95fe25123e1c75cd1d6877c6385dd35770cea4614aec34c6b7
7. 0x8c70165c58cd6cd99525f68c3638dedc0d7a7ec93487219cc1f07bf9e16f75a2
8. 0xccd7eb1a13800e5503f22d3fb860f31ecf42098c06a54dd6495a9dfd1290663c
9. 0xee6bf5b0d02d7db6cde490691da05e9962e885abbb8509f5af2a2a19dacdc19f
10. 0x5f8295f142110a957494e3db6adf15cb3ac925e2646088bd2ef6578fa1b8b5f3
11. 0xd959f13320b066f3ae84be422387b9b9b75f9989eaadbe12958233c31451341b
12. 0x8b6f2e00ca53627a556efa28a330329defff6f53091e97b18db21c58436307cd
13. 0x5b3213451efe1e2950dd287afaede00cc8a45dfd9721ef9b3d698bde1eeb9909
14. 0x674bc1173d39130be4d15bbfc7327f8a8af87eb251e54c8d4409c7e840b9e538
15. 0xb78ea6a255dd06e2f402a1a733bca392fa6243920bcba95e8b80bdfc6ce5f553
16. 0x3ed50f053eca72dfd3a9d45a11935240bfe691e57835c367ddebe2cbc49efe9d
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4