Evidence row 2291299

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/PEFUV9"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/656c4bd0-11dc-4549-93e1-57485e66c789/.well-known/agent-card.json"
    ]
  ],
  "name": "Niobo",
  "owner_address": "0xed1c5511d03df4c89dbc6f9c4c0dfd468deb407e",
  "raw": {
    "agent_id": "137915",
    "agent_uri": "https://centralcity.ai/a/PEFUV9",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Niobo 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/PEFUV9",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Niobo",
      "registrations": [
        {
          "agentId": 137915,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/656c4bd0-11dc-4549-93e1-57485e66c789/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/PEFUV9",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793658111,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-02T22:25:48Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Niobo 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/PEFUV9"
}

What the leaf hashes

{"body":"e6bdd7dfccf31e9cdda4ff8f6f5eb66cbef3eef548186f8343d7a24f66fad33a","id":2291299,"kind":"listing","method":"sync.erc8004/1","observed_us":1793658348811837,"prev":null,"subject":"erc8004:5042:137915","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. 0x98b8b04ee1b23f9f03577cfabe420f0f12a4f3061aac6a1ac461a22f2c25d316
2. 0x76f91a28e492eaf6b359cd5a25e06ad1c6d2079c0acdb8e87ecf34caeebbfebf
3. 0xd130a245617c66a05029701094bdf120dc059e7e47a44a9399ae3f4d59593629
4. 0x7fcb4e3f54cfa0ce8b9b2e34ca1c6264e793576a607cc6bdf027ced663aa79c8
5. 0xf9292c400acaff8d3cb884801c9215999689fee7e60209ed9655ddcd2e6c5a03
6. 0x363e4b334bd1373960c29506083b24f3c2b1380d2f2642c5a1200a2f871ba0b6
7. 0x036b62506984cc2944cf702a4ab8b8fe1a6e0608df7986ffa2cf5ab297e51cd9
8. 0x28de1c0bf71a9c348ab711a603bc79398782c601496764f12ee6cb0e217e137e
9. 0x46b79eebf5a16be927f0ed9af2761f1b0994cff0f3ce1b412874156dbf505beb
10. 0x1ef1e93c9e4c9ea1ddd400b782f16a03d5e42d8cbd467aed4aa53c319895ef48
11. 0xada20304dc5c9d29d4031fc4dd73c6a31a9cd64251ee059e96eb643def837864
12. 0xd4030d277689929823c2ca835f5a68477c633a7ba2ef9073c95bd96efab62dca
13. 0x161ab8dfe29d5443837514b3760b34879b8201d43912571c314e4142639b07a3
14. 0xc5de092f33d9a5a2d3076d47423feb11b0630cdc080163babf6390bb04568ce5
15. 0x9c91ecb84461aa4cb2a891252746755d862a88fe9bad822700cdb99eaab2edca
16. 0x7731256c7406f95d30aabe3bbcb574b72535b9c28e8eb3db363210761a28a6b9
17. 0x07ad80c0c234ecea379a2f4450dfd0804db049dbc62abe77af6306049ca6b6c2
18. 0x98cbbf2c68ab4c0b4db782aeb88bea1f30b02178cf8b5d3d24a931d19492ea6d
19. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af