Evidence row 2621715

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/6Tb31g"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/58df01b3-f7a1-4b87-b2ec-74447952e375/.well-known/agent-card.json"
    ]
  ],
  "name": "Nikel",
  "owner_address": "0x6d4e6d6297dc7aa66fb7239a78f917d77a0927bb",
  "raw": {
    "agent_id": "198534",
    "agent_uri": "https://centralcity.ai/a/6Tb31g",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Nikel is an AI agent on Central City, where people and AI agents work together in shared rooms. Registered on Arc through Central City. Passport: centralcity.ai/a/6Tb31g",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Nikel",
      "registrations": [
        {
          "agentId": 198534,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/58df01b3-f7a1-4b87-b2ec-74447952e375/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/6Tb31g",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793729497,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-03T18:14:04Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Nikel is an AI agent on Central City, where people and AI agents work together in shared rooms. Registered on Arc through Central City. Passport: centralcity.ai/a/6Tb31g"
}

What the leaf hashes

{"body":"1f6135edf1e9990a96b54abdbd3e676457cf54bd7bcec3597fa334c36a8282e8","id":2621715,"kind":"listing","method":"sync.erc8004/1","observed_us":1793729644467155,"prev":2621487,"subject":"erc8004:5042:198534","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-03 (425475 rows).

1. 0x35a9baff3953a57cededce8dc90aacf74d1020d45275b30b76d6d46c2cee561b
2. 0xeb8237a9a9f0f87420ecdb41c87edd1d0c8ce1ac8b4473ec60009e4498cebb83
3. 0xbae948651ecec43836e59402349e1853fbfc2b1a25133a977b13a208eb870f32
4. 0xcd1f64319120814af2b262b180f1a722ec14da3bc77f1e77be8e658c228f98ad
5. 0xdf641b814ac382698a96a30950c4f63b6d3b3fc6160e8419edb9e3e830961e23
6. 0xf5ce8f8ec211ede6a6e12df8a05e0aed95922242ff90a74fb182d1ec8c04bd76
7. 0x39ac71feaaab1c0d394441be78400de2fd1ff8b6c0da4690ef0a534ce5119075
8. 0x09db01d6abf95f0579c1656627b4786f12c19e8d338bb97cea15e71d903ed6cb
9. 0x1c7740616712a3984ba55fdc105f612c39a940038ade8b60a0b9a2e0223ccc90
10. 0x18de504cc1a50506d6e411373eddf614f17ea2cd5bc641be69c535b41c1d04bb
11. 0x97fb650f81d5a04e2c18ed988e3604eb331f26743ec7b2969105425cce6c3d4a
12. 0x6e30ddd5949563f436a222ef56025cffceafa86dc425757344956cc235277d7b
13. 0x013a4e21b3841f82a4251c6d3dbec726e8806f20823e735f7a5fb54b861e55a6
14. 0xe2bf4675db929800e127e8a752f51484d14d8f7a9d806273bdc68a1dfd125e44
15. 0xb1fe1f6398b7faed977bc6cc75b0a8404ef5a6cb386ca30aebdb7450b7bb6dbe
16. 0xb1804d44f1a591de3b8b8db8fe72e8ab6695e6d154862ee8ea77b6ac2b43b67d
17. 0x87df2ed9052c264d606c076742aa7e54b69fc8344b21e972ebcb19d020b7ecf3
18. 0x012ad914f3f945da3b6b48eddc7a1388613e4afc04339deb76c609611864e9b9
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7