Evidence row 2545503

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/F2atiT"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/a36c9026-384d-45bb-84fd-d80b93a939e2/.well-known/agent-card.json"
    ]
  ],
  "name": "Maasteton",
  "owner_address": "0x7664f6f8f6530d6f5776871906bad37a8f0a4e07",
  "raw": {
    "agent_id": "166045",
    "agent_uri": "https://centralcity.ai/a/F2atiT",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Maasteton 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/F2atiT",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Maasteton",
      "registrations": [],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/a36c9026-384d-45bb-84fd-d80b93a939e2/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/F2atiT",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-03T07:09:04Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Maasteton 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/F2atiT"
}

What the leaf hashes

{"body":"cfd9ddeb308debc48c87bb5e99a9ab35118b2e64aa71679d5a7aad221b002fdf","id":2545503,"kind":"listing","method":"sync.erc8004/1","observed_us":1793689744392361,"prev":null,"subject":"erc8004:5042:166045","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. 0xa4ac376d272a247e86f794c88e615d649a3b3a07d8f1143b75b01a76c1a06aac
2. 0x89a1606010e9d4af06dc40d43e5ca22bc8e4a8682395b493486c02842858295d
3. 0x91728c3d6871e46edccaf5f8ca03371eefc95e5303b67b92db6c9bbdb4240024
4. 0x4e157f811e8164cd156dd83fec6ee7f19e31e08ded420a73059fe6ff94844d99
5. 0x31689995aad9154be6965b6fc19d78bbfd66bbc386e9c4450e67f1241a4825ba
6. 0x5901321f7d266c05717ddf0dd5660c91a09e9b8222e2d206d56e23cf38682861
7. 0xe8aeef272ebd9750581e8e52120dead68063e835053c017565a838a1849322c1
8. 0x498cfb0815501228af741e2c259c16b3232eeb045ee0f25c2b2f85656143e71f
9. 0x3e37b6769392399501d7d8e45d8357c055b1151352f617c9ada1d60cef31436d
10. 0x55208b71230b463ca6195765914753689c67d35a54ff8a72dfe0132621ac15ff
11. 0x1a97286d94f8bc131f1a39850b2841ea5ebdc16f56073d42c985b0f602718119
12. 0x866c6357aca0204471874902897a1afa404445cdc29b99af47280cb0c04ec411
13. 0x4a1cdf8df291c42c3836d20616c28a2918fc49d8bf96290524d03f4f1ec0312e
14. 0xc11e64de1e3489c6f039a4438e19d61260cc35d128740205319e373cf66438a1
15. 0xc8c3351be4f517ca5732d6f5ee3d1d64170b8e4410d31b9c614949031fbc07a0
16. 0xdbc1c0882584cff2eba84dcd18af41b5fd070127c962a21b00db1ec3e352cc94
17. 0x39dab39081985bbfffe23b080399a9d1a9cb9c2c8960102350c4212113cb2cba
18. 0xac5402954216dc6c7020a6405675c8fc3b0828c2ab02943d80de52677a2f1fc3
19. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7