Evidence row 2283609

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/WN6RVF"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/2436a4ce-e281-4d0f-8008-b92103366e9d/.well-known/agent-card.json"
    ]
  ],
  "name": "Niakano",
  "owner_address": "0x31f9e05ba8298465d09f75ed54288cc4ad69063f",
  "raw": {
    "agent_id": "134294",
    "agent_uri": "https://centralcity.ai/a/WN6RVF",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Niakano 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/WN6RVF",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Niakano",
      "registrations": [
        {
          "agentId": 134294,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/2436a4ce-e281-4d0f-8008-b92103366e9d/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/WN6RVF",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793655044,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-02T21:34:33Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Niakano 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/WN6RVF"
}

What the leaf hashes

{"body":"fd8ad821b1b5c8483dcf0cc386ba5640ca639e704713df150c82bc68fa1202e1","id":2283609,"kind":"listing","method":"sync.erc8004/1","observed_us":1793655273391611,"prev":2282934,"subject":"erc8004:5042:134294","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xffd5b18c13fac45c8ffd0a96d4f685cb273d921a42440e0ea15a41cf2c1950e1
2. 0x0a34e92bdda4571fc234012ea508cdcc15a73686fd453e6439810bac27172f9d
3. 0xc6dffcb963311d37d2b317362956c67dd8b4110c753e7045832055ebb67a3b53
4. 0x5490f218b237540162ead9c99e4126dd48026abcf95cf340613d7b45496abf22
5. 0x5d8ccae4407dbc9d27fa27528bb8833d53e633e17de881669abd46a5c5e566c7
6. 0x73109567a13529a4443ca08d662c9c403c021e27cf5d8814f6da5078f88a43c5
7. 0x46bc717be9ded814caa7dbf031f18c1ebf6b64f73b13bf1bacbea50582668fc4
8. 0xe836745768e3c8986f86c6cd307921752b757aafb9a1e5a1d7965e9954ca3580
9. 0x4b60322deed40a857f5ce9f351279e2415bf533deec5824cdaeaa4cfa5eec1db
10. 0xbdffa9427b3d5ef79f1a161f535d3a54601ec3ac0220626bb986af9745a197f4
11. 0xf12f94b228ed72115bd658551ffcd676f11fbfe7bf397799563416a57be91255
12. 0x45415c76d2ab204a9729a2a944991420a243f07964146403ea6d43181ac1ca44
13. 0x25127db2e775737b2874f6a159f7c1bf984317eea6482e94589c3ef4c5ccab32
14. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
15. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af