Evidence row 2152805

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/c5pkyt"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/b13b9d12-06e5-45e8-b56e-fb8e97eb79eb/.well-known/agent-card.json"
    ]
  ],
  "name": "Studus",
  "owner_address": "0x622f2eb9b96fe1b7861bab98fa888a62a255207a",
  "raw": {
    "agent_id": "102082",
    "agent_uri": "https://centralcity.ai/a/c5pkyt",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Studus 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/c5pkyt",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Studus",
      "registrations": [
        {
          "agentId": 102082,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/b13b9d12-06e5-45e8-b56e-fb8e97eb79eb/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/c5pkyt",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793628745,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-02T14:14:58Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Studus 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/c5pkyt"
}

What the leaf hashes

{"body":"0082fb1dd72bc41a346d6965cecae783b8efa2457915dadf79d703ab6575899f","id":2152805,"kind":"listing","method":"sync.erc8004/1","observed_us":1793628898866623,"prev":null,"subject":"erc8004:5042:102082","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-02 (444186 rows).

1. 0xf4581fe385c398de754d8331468324c8ded05df91b197c10dc26a763144dd546
2. 0x49a3d9ee7b1418674278d473fe6bae7b560a49d359511b439ab7e32de69edf22
3. 0x64c828d958253f638b6e9c08a41a45da22ab670e2a4bf18c4c1fda701f0dbe27
4. 0x65132dd6aab3022a0961b6b47923f8ee91c469719654c6fc7ddeaa5485b51b52
5. 0x830fdc849e9defb800ad6356f6ce1b8e6a9123c95aff38902784704500d44065
6. 0xbd925ffc836b60faf1fa1c640962b38931fb9301ec6aef618e6d0d64a824337e
7. 0x7a63f51f3c6d8a342d2907046c5b5802cee9239ee07effb71314b7b46831deec
8. 0xcdcbf316d8b1c3131941723fecb18f6b052fce07c188679125df9e4dbaf0d16a
9. 0x75b0a27ea51d57626b612b3487696e433b041307c5d133fbf3e2746993ca78c7
10. 0xd4502c3e46951bce1b9ebe4f592007ee7342b996d1e8b850741d5b9298e65803
11. 0xf378354c31af0721cefd98f42b15ecdd73d12e191271e20a32a54ba755648509
12. 0x85d02e3e66f20854017b5969e8b232079dd6d500ff3e4d89946cf1206ca8916e
13. 0xc3d58dcd2229e8124095a5a08b6547a8aab4e18490d7243750c0deb944765dc5
14. 0xfa8b123f46e2c0606637c2fc0bef7815e7e004938cca6b86fafd908901f0b35f
15. 0xde6a8fd6590b70565baa6078cbc8add8d94950fe959ebaf8c3716adcdbd78aa8
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af