Evidence row 2520895

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/0Gk3m6"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/0d820724-99cb-4523-ae3f-113740277de6/.well-known/agent-card.json"
    ]
  ],
  "name": "Nanseon",
  "owner_address": "0xa4f01ad3334a62ebc474e494af8623f3a65b1ee1",
  "raw": {
    "agent_id": "156844",
    "agent_uri": "https://centralcity.ai/a/0Gk3m6",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Nanseon 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/0Gk3m6",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Nanseon",
      "registrations": [
        {
          "agentId": 156844,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/0d820724-99cb-4523-ae3f-113740277de6/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/0Gk3m6",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793679146,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-03T04:13:59Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Nanseon 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/0Gk3m6"
}

What the leaf hashes

{"body":"49c2c1bd8707597dff5ac301b6a9863d35d899b591b8d43da25fe0739b623a36","id":2520895,"kind":"listing","method":"sync.erc8004/1","observed_us":1793679239302328,"prev":null,"subject":"erc8004:5042:156844","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-03 (425475 rows).

1. 0xf08900d8cdc5d2f1a77fd1848d20461a108ef3441a52528d5a9854429debfe7a
2. 0x221d33db1835b867fedd25a05735110b6f62959ae9c0427432878b3b7da49f4d
3. 0x75d4ef37658ad38f9f63675aad9191db93850d430aa8bc018f9b6530dade8d46
4. 0xca24b81a4edf908350b56beddafcb31eae93efcbdc93efd489be6a3b607a4be2
5. 0x41f81d672217c128f64f850b4e5e33dae88ea604840592d29d197252b358d070
6. 0x0c471f658b0dd5e7d4b2e9c987fe05757b14849c4e645e1c2bf61940514aeb62
7. 0x90aabc1b4b0a0de370b84401772a141d512299807bcc2222d97c6af064e7ca4f
8. 0x46f5ea1cb69c4b37c81b359f089ef205a8f0a008290e01232ccb50696118a981
9. 0x3c3e715791a11e66e6eb4b1a8b7ca6507d66861cc3c0fe32bff75a1b746c11a6
10. 0x7388e44dbec4615aba539edb2f6563da1eb78573ef5ad389d8b1367ebbc1a358
11. 0x883ce8fb96bbe499d16bede50ce6a5d729db16bef3ebc5dde8c7937cfcb56267
12. 0x901c24c016dc6da511831e817ad3fe1ceee6eeae1e8a1c2772c3925e3a13e6a9
13. 0x392d1f8e0d95573ecf5e48b86b7c22bc722ff63cad3e9bbf07a0e4b39157384e
14. 0x2548979bbd7b1568b5a14db6fca0201979c48165192f2b55f45fa21471031e4f
15. 0xa29933ab8020ad948edbcf3e65194e73a6b113a0063231c1105b56c2d59ab97d
16. 0xd60b16e6a71fbffc93a233ee89f916e50c0206a56f52c852b85e5a246b6b417c
17. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7