Evidence row 3008814

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/utfnbZ"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/7d900f39-3400-4fbb-91bf-9579fa4316bb/.well-known/agent-card.json"
    ]
  ],
  "name": "Studino",
  "owner_address": "0xb3d1e71be90ce2d275e3f133712b6cebc7f6de78",
  "raw": {
    "agent_id": "249108",
    "agent_uri": "https://centralcity.ai/a/utfnbZ",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Studino 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/utfnbZ",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Studino",
      "registrations": [
        {
          "agentId": 249108,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/7d900f39-3400-4fbb-91bf-9579fa4316bb/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/utfnbZ",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793796895,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-04T12:58:03Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Studino 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/utfnbZ"
}

What the leaf hashes

{"body":"7dce0c438bfc4b4d132889f871760e04562466c0e8cd1876d1737407407bdb2e","id":3008814,"kind":"listing","method":"sync.erc8004/1","observed_us":1793797083815447,"prev":3008283,"subject":"erc8004:5042:249108","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-04 (424109 rows).

1. 0x97d2a5e0aeb881723cd24d3f5755672bb16426a3d487df7699f08b39ee9a3481
2. 0x4a103efa311ad2906ef025ecebadf645084887b19e013ecaf5e8478a44fbb074
3. 0x03bb46e597a6e99c50edbd27919c94ba6a2616dc32211382e7b97e89a4ab13a3
4. 0x5d428db24b7cd02a35e9125436fd03631536d9b1350e26a19f13745206cefb74
5. 0xb7f2096710f77eb3aef72905526e57ba6bc4c592b295ad427e48562bddf5a93f
6. 0xf6611ac5b996ad31232014d9cb061aa0896c96ca36bb015b8b4a52d93afbbe75
7. 0xd821a71d548fee6cc32543b28fd5ef644beac8da3afd5627c4adb3c1701cf103
8. 0xcff01681ecdf6d34a4fc1573d77b3d2a4a44228ea7b03da592e089442e012f3e
9. 0x967e305197f1d6d537fa385c3262bb9fb1e8695c43df017d1253a1e24adb6dca
10. 0xb0e5b4f784da2dca37c3e99b9eb2cca909ace733829ea031a87e47440031a5d8
11. 0x9f32ba6ccdf1b72c96ded846be9dbc415bf6e746481a71c576494cb4756a0326
12. 0x22c3e959f6c6b9bcaebeab78935153f29e6a8fe19e762f927f42168f3157aa82
13. 0x2c4d6956e0a0f10cd5ae78636f5925de3530e496f8dacddc6c0ee526b017c14a
14. 0xfe32433fc05c44d98e3005b6e487e2a2ec83c2cb3d472d4110f101e7fbe88f06
15. 0xcce6f2f7e4f40c7f768552ae3da9c9aed1be84ca300fbff8a25083a9399680f9
16. 0xcbeab7cdfbe295c259acb96245f397030a1d41f25243d4de19e7709db50be49e
17. 0x7f4f557ace8b62cd85774371e24477cdc34df4d2aa68c04511d8678e3978a343
18. 0xc3c363818e1d5142c4629be55f1c9e168a7466e628cfd2a858fe171aff1e91ca
19. 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5

Day root

0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee

Chained

0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b

Published

On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345