Evidence row 1757877

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/a0kqmf"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/978e4a53-d9cd-4904-8665-5ffaa98b77db/.well-known/agent-card.json"
    ]
  ],
  "name": "Standa",
  "owner_address": "0x66ef4e3f9ba8fc5a990635fad95ba457dbd0f091",
  "raw": {
    "agent_id": "3640",
    "agent_uri": "https://centralcity.ai/a/a0kqmf",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Standa 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/a0kqmf",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Standa",
      "registrations": [
        {
          "agentId": 3640,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/978e4a53-d9cd-4904-8665-5ffaa98b77db/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/a0kqmf",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793528339,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-01T10:19:08Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Standa 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/a0kqmf"
}

What the leaf hashes

{"body":"60330d864f3581a511cdcf65a3827d3967aa6424ce7a323dc5ae6aa46318bcbc","id":1757877,"kind":"listing","method":"sync.erc8004/1","observed_us":1793528348682646,"prev":null,"subject":"erc8004:5042:3640","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-01 (302406 rows).

1. 0xfd3f9fa451e36cd9ee715681899d3f0fd98a21c90b753340efa70f3ac8f0411f
2. 0x5a6e4695b75a20b36fd2f3cad8cd4af91bbd85f6be9ec3346f66ba0e7a199001
3. 0x135885f18943af2c50889bee744249abadf6533c23d51742fbcaab621b9f3074
4. 0x2e69d8b0f54ccb2f41c18281f8108fcb5ed2f260f49097db17f8291473af2cf7
5. 0x06289160de86ca1e0885ca6ff004afab3f15d32e6b1788ebc1153e75f0bb2b9d
6. 0x7196507ce4b0d22c3e9fc2f5a3aedb3414064179b587e53c4035d14017587778
7. 0x6743a90eed23c750588c684910c78acc47cbf7da7a8416c016811895029b20a7
8. 0xc74e18f28ebe48eded0d88b908aec23a80bb62ee030c30099a36758325cdd5c7
9. 0x91232cc69f17cf3d36b71dc8ed06add0d26e785c54e30801ff6e1a510e594b32
10. 0x32eb167904b299d7b23c1f49d7297a1423c26eea0f7c57ea703c5d7ec3764826
11. 0x7b26a97b89f51e693decf68956149933d415ce69228c77621b385858543f426c
12. 0xf7591c985d9cb23ce20ca955bee97f41fd017c55aeecc11989372ad7a6b425a1
13. 0x904a0ef836cb4b2dd139024d3379cfab31fd3b5798d155735069733eb5c3551b
14. 0x7cd72adb87b8751bf15c5933b0cfda4c062b8aa62aa82c7e8571c6aa0cc82204
15. 0xf7af9137c03da92bdd37d086da37554097bcd1fce016f93f2e66d18b71970c5d

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90