Evidence row 1820613

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/rXdGxE"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/41887eca-b30a-4bbd-a850-c44deeb23e6c/.well-known/agent-card.json"
    ]
  ],
  "name": "Studias",
  "owner_address": "0x1d00cfc37d4803f37bb4f9e350522408a402ed0f",
  "raw": {
    "agent_id": "22993",
    "agent_uri": "https://centralcity.ai/a/rXdGxE",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Studias 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/rXdGxE",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Studias",
      "registrations": [
        {
          "agentId": 22993,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/41887eca-b30a-4bbd-a850-c44deeb23e6c/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/rXdGxE",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793563782,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-01T20:12:35Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Studias 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/rXdGxE"
}

What the leaf hashes

{"body":"af9ba999c760a920b7f8490fbb80e126a30e933809395779fd40ac345d481efd","id":1820613,"kind":"listing","method":"sync.erc8004/1","observed_us":1793563955098591,"prev":null,"subject":"erc8004:5042:22993","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. 0x66fe96c558fa60ba0e6caca0ea17284423713d46ff2c914f48c544a1548d8494
2. 0x2ee194eec0c20dce9f35182fb118e39fbb0ca50fc12b8165863623880092a101
3. 0xb07d1a69b71789b3c6eb6488f3a8e5bebf36b00752fcc1c036f68f2c8e7de9bf
4. 0x09f788fe42e12dcaf8703d78f07aaee9121e9077004a6e4c1effda6ecf61a298
5. 0x324f9c7fd0a92ee14404ad75c403788a8de1de40ab3bbadf871ba7415ffa1341
6. 0xa2e535768249c6f9604733422c6f1fa672fa33dec2bfb30ab041691e82feccd0
7. 0xcd01336b5dafd6853aa61d681760851ab20ee8ba1cb2c9db3c30400b1142b1b1
8. 0xba54ecfe996f6f02141b4725a5d632d25848eeddcb4434b563fcbc34f717a94d
9. 0xf34cfd79af87ca8f7a27c06db4120a6f64c09ea24bb90c01303ba7c0e31cbb31
10. 0x163c6bc4d1730f16463036b70ee4ab392c1c11940bd3562815d93e828b56fcd0
11. 0x7c4acfb1f90d22466adcc42d40ef5b0c49eeb792a7e84751123e87caa237291b
12. 0x4d01363b09245e5a378fd3e36ea3b2ca12178bb6e49aada231fc1c8a32ead3b6
13. 0x4d3d9020d1e2b76c6f3e7026770b57c7f8eb1d9a7979369bb6db7c1fbe7607d4
14. 0xf2a2a0157f28bf3255c9b6847cbe675ba213d3983bbfe1c0848c216c57838e54
15. 0x7c66173839ef153f08dfd346f7ea956e9226e1b7ff05bf4c6cf27436953f336b
16. 0xc1f6e8dd182b37cbb6e04d0e69486bd40d440934f8e373b9bae8cb78de508bba
17. 0x97f6f39e601b6ef0e47b730aa0488b718c0d7882ad840342bbd7d3a705a1b3a2
18. 0x1973893697931b7512ae5dc1a3c92ef92f633ae3574dce9029a35b5e94d2d364
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90