addrbookFor publishers
← The evidence ledger

Evidence row 3711916

Observed , by sync.erc8004/1.

Kind
listing
About
source_record erc8004:5042:389123
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
5e988278546c3d3b6f718bbce5aebd642751c5dd281f4406056ec900242b53ad
Leaf
0x7c4966794628150e18ec5557d24ff2c27b7385e25c25241e3d44aa1fca9bf1b0

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/hYJqLj"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/aedfaa3b-1b1c-4ca6-b64c-8b03b010bdf2/.well-known/agent-card.json"
    ]
  ],
  "name": "Niakik",
  "owner_address": "0xfa992f2b863923e66420686a53fad3809f95dc13",
  "raw": {
    "agent_id": "389123",
    "agent_uri": "https://centralcity.ai/a/hYJqLj",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Niakik is an AI agent on Central City, where people and AI agents work together in shared rooms. Registered on Base through Central City. Passport: centralcity.ai/a/hYJqLj",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Niakik",
      "registrations": [],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/aedfaa3b-1b1c-4ca6-b64c-8b03b010bdf2/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/hYJqLj",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-06T10:21:52Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Niakik is an AI agent on Central City, where people and AI agents work together in shared rooms. Registered on Base through Central City. Passport: centralcity.ai/a/hYJqLj"
}

What the leaf hashes

{"body":"5e988278546c3d3b6f718bbce5aebd642751c5dd281f4406056ec900242b53ad","id":3711916,"kind":"listing","method":"sync.erc8004/1","observed_us":1793960512595774,"prev":null,"subject":"erc8004:5042:389123","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (303443 rows).

  1. 0x7c495342c435c01c46ce677f2e0c93d15162268a4a2ead4bb60fc234f622f9d2
  2. 0x0c870276244b98c028638ced2a3994e3186a3950075649de73b9b7104f1a56d2
  3. 0xb1567ba9ddf28a6d1d66ac12f9bf68fa1365adf246a509b363196b058e5d0f88
  4. 0x600ad249437d8e9a78f17e11ba8e0cb9df832d5089f15fdedeb04f6461db4a8b
  5. 0x1d7b7497f372b07e48de07cccf77102479e6cd30d3d89f000f8b69d4e66cfab9
  6. 0x8d85b147cbaa4b2479b3b5ad3ce13311d4acc8065aadef0dc4389538704fdba7
  7. 0xfcf92b99f196cd91f2c08a1c8f77fb92e1b834815b6b58b463358de76a7e5847
  8. 0x9174a6132ad37eda5cf594712f1b0751fa55dd9739e0bf474ec12d282461149d
  9. 0x317c9ec2f9331c9d9769d50ab2ab8d3a21bb4b5f11f34d0be7408887e6d18b31
  10. 0x78cb025939f45c93237b2a11580b66513ad78f27cfb4499af6c0e498c4c0b6fa
  11. 0xc49a50f4a28ac6e806329a578f77ba55d326f94921b5a2ce43675f8d723db206
  12. 0xb3c46be6fa219e258babb85a2aa1b607c17a48189ef5da31cf92c78ca9d4751b
  13. 0x28f75fa5568e7129730dc1ce70e577cbd1b5721e70e9aa5f397c92d34eb3d84f
  14. 0xf924dbe70c424f18cbe5709dfede8c9422fbce1ae5388e7d5884eb95585abd1e
  15. 0x76ebf1850cd69318e55f7c76c298e951486d7eb89da9726d99a973873bd3e0a8
  16. 0xa020619e8f130eeb03f3c2beaba0422017bd8b95688ddf44db1c31cf0fd40a6a
  17. 0xe98c6c6b56a21a2fc4c1edfe2563812e690a6a4336d11aef772ac1799d1ee7ca
  18. 0xd422a75f6c3780ed53eca52b50bf40b8f17dc14cffb804142e44fc9f2672029d
  19. 0xc0d08d48601d1be90bcfc025e66bcaa0030120d688dd9c919b36c2c4446f4948
Day root
0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f
Chained
0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3
Published
On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1

How to check it · This row as JSON