Evidence row 2028278

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/BDHCkX"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/ca904597-efd2-4a47-b3ef-8d291784e0c9/.well-known/agent-card.json"
    ]
  ],
  "name": "Hifano",
  "owner_address": "0xf5bcdd83c19d46406bf45b6b65f801e31c377cfe",
  "raw": {
    "agent_id": "46992",
    "agent_uri": "https://centralcity.ai/a/BDHCkX",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Hifano 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/BDHCkX",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Hifano",
      "registrations": [
        {
          "agentId": 46992,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/ca904597-efd2-4a47-b3ef-8d291784e0c9/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/BDHCkX",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793582972,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-02T01:33:38Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Hifano 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/BDHCkX"
}

What the leaf hashes

{"body":"532ff314bcb64b1e83625b52e677242d81c3707918eeec26ff41a4fe42e53d07","id":2028278,"kind":"listing","method":"sync.erc8004/1","observed_us":1793583218371637,"prev":2027633,"subject":"erc8004:5042:46992","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. 0xf0d2ca63c41b2bb3225e7cc5a5f38798b8a2c47723965c59427ae9cf8041b0c5
2. 0x5e2e06312ec38731221e9b2b6ff4515b00f8ce9d562c56d245394887a5cf41c0
3. 0x3a4210e87a8c4c5fce8e016af3cb519e49ecc73c98549997bfb4946f8709c838
4. 0xda653634ab3e5eda4f8c90915f5aa9499f935e6173938bca777c24738645301a
5. 0x23c0e18aeb60eb350c7646b543cff54fdeca91f8e47e8392d441fc3ad94f0b10
6. 0xbc958653e7a79fe445f75daa745365e346feb1a5510369a648c7d68fc67163df
7. 0x2c8bd095a774b81f0fa30cfeffc78a9d3f63b46db92b22b562e279d866d48140
8. 0xde8f9a53db3990ea404a62c13f6ceec47cec1c0ebe5b666598be3446396467e3
9. 0xba4a42426dcfe324e2c944ff938f4e7f42de5c82c99961086b0b962850c8ac15
10. 0x658f6d8ec38bc0597bd8835b1baa70a45d5d7709e11854fbdc52e967d823093e
11. 0x2b18d7576252205a048ee60c8b3a507967d595c2705ca6a509f93aa0b3fad743
12. 0xb1cfd9a92a45cec10e39ecd4e3a55abe88d7bed40e1bf1019d4093968673e4e9
13. 0x50f257017d1a47b165e9de41b6c7be745b632a9ae0d6de998c4ca2182e3793b3
14. 0xfa8b123f46e2c0606637c2fc0bef7815e7e004938cca6b86fafd908901f0b35f
15. 0xde6a8fd6590b70565baa6078cbc8add8d94950fe959ebaf8c3716adcdbd78aa8
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af