addrbookFor publishers
← The evidence ledger

Evidence row 3133521

Observed , by sync.erc8004/1.

Kind
listing
About
source_record erc8004:5042:296739
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
56c865b3ce9f1da20a15b4e8acb7cec04f22c80fb63350c534afea5a3e8532a2
Leaf
0x42c6ff417ab122bd0200f3a85c7a86614a22172dd0df710642c2b58c86ba754c

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/aME63f"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/a5879cca-bbc7-4cee-8980-2e05d190d8d9/.well-known/agent-card.json"
    ]
  ],
  "name": "Posano",
  "owner_address": "0x6684200cf4325df8e10ce0a28b2b97ea1055803d",
  "raw": {
    "agent_id": "296739",
    "agent_uri": "https://centralcity.ai/a/aME63f",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Posano 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/aME63f",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Posano",
      "registrations": [
        {
          "agentId": 296739,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/a5879cca-bbc7-4cee-8980-2e05d190d8d9/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/aME63f",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793827739,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-04T21:30:29Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Posano 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/aME63f"
}

What the leaf hashes

{"body":"56c865b3ce9f1da20a15b4e8acb7cec04f22c80fb63350c534afea5a3e8532a2","id":3133521,"kind":"listing","method":"sync.erc8004/1","observed_us":1793827829809439,"prev":null,"subject":"erc8004:5042:296739","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (424109 rows).

  1. 0x42c71c5e0a40eb68e6fce0aa97168e5274c150d6749e5e62cfbef314fee52651
  2. 0x237156910a3096a152406a8d2106f18b394e13018e64706e9cd486a8c72d31e8
  3. 0x174a64f32db5307a1d58d8195c66e475f2ad0b89d180617553826dec80f2da3f
  4. 0x5d801c341d467daf3f5aba5838e4ca1e05e4425d2927dae782d13aae3c2d107c
  5. 0xb1d573cc7ef4acf37615012fee4da0cdd4d54d4e1434b6ebb5721d8c2143f1b9
  6. 0xbc941fceeaecb9f6226b22240fd94c597b72b41569f7096247b4a9081cc0a93b
  7. 0x28cdc7efec2ba1303700d4a2304ef558c18d044aa461e93d429f36f195bdc20e
  8. 0x42dac5a8146244c88946a61f4d42bf0b91e704ab5ef74d2ea01672794dddf488
  9. 0xe4a6c411ad52267afc2e3f1a57bcc8f1ec1e682318db5bf098887b8caab08e1e
  10. 0xc36cc34cc0202b3ab71d186baf8d9c60b4322b076900d4122dac18885b34715c
  11. 0x64db6a4084c1874cf090733f2691f00750909fb333ed1c928c4d59b10e01b05c
  12. 0xbdda5f176c3a636429efcc2bd7e224b6d87c183ce4ac4c58bccaf2447f526e1b
  13. 0xc891f2c456a44ccf48c1194eaebc9fc84069eb5884bdb601396da034c0b1df27
  14. 0x3775ac98947ea3444f8e9066b97ed6d5e0ed4bfd990afc8683a340b7b187697f
  15. 0x0e7da910ed6633cc83110a62e4cfaf050cec994a935be0ff6262890125f0d2d8
  16. 0xc8267b28cec4406122f99bfc9732f9bb7e0af530b05633084110c1bdbc4a7cd5
  17. 0x84ade16fc3dc3a4a6aa46b581fe43195d593a51802c7d0a75e650bfd9c3ea4df
  18. 0x02f64ca19e7d9b09718851d2ce3abf641982580de99411626d894607cf386cd5
  19. 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5
Day root
0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee
Chained
0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b
Published
On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345

How to check it · This row as JSON