Evidence row 1826721

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/BybE1o"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/48bf9275-3e5a-450d-a56c-325c156995ea/.well-known/agent-card.json"
    ]
  ],
  "name": "Foson",
  "owner_address": "0x53bbf1079db7bc7772a738be3f7fd493631abf8f",
  "raw": {
    "agent_id": "26732",
    "agent_uri": "https://centralcity.ai/a/BybE1o",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Foson 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/BybE1o",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Foson",
      "registrations": [
        {
          "agentId": 26732,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/48bf9275-3e5a-450d-a56c-325c156995ea/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/BybE1o",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793566723,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-01T21:04:21Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Foson 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/BybE1o"
}

What the leaf hashes

{"body":"0da555b722db8b04f75bd6c72531a4f4d586d23e1ee42d2fdd827fe178a07d3b","id":1826721,"kind":"listing","method":"sync.erc8004/1","observed_us":1793567061364872,"prev":null,"subject":"erc8004:5042:26732","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. 0x9e8040c2148bdb02b42836da99a0fd9337096ec2f0f42740ad14bf22c9066694
2. 0xe924d81c47b5defb6c777ea39a01c3f2f66d2ca4a97bfee0afb5fb084fc1343e
3. 0xa488a8f59d0154f733ea5239ed32131c3eafea5a69dd4f5dbd28fed70d1fe02e
4. 0x7104958fc2eba394f66e145b0562b61a16517c45068d726d6613c6744ee05cf7
5. 0x8705532f4fb9bc324ad54fa80c962bd63177320d1ab4167293f1d5c068f08e0f
6. 0xb2be63cf8d4bf25c54b0559b48ef1b7624e8597642c112a94c94ab932fc198a8
7. 0xefbf4adb879f28968343b7969094047d2279e1e4cd5a780d909d23deaaf025a0
8. 0xed7174c22aa654f67fb1e101ddd8ed81a417a7f8a29d3de5f179e60a6bab3173
9. 0x87b93b5d434c11ccddd63e08aea245ff1497bfad3b6af0c7a428958028d9eaad
10. 0x35a57ab548f4a1fa386c14586ba9c45b98c2eed858731ac4b539d02fc374baaf
11. 0xa83222592fd6a30c344ee769b2efb6f00f46ed22fbc4508896b7b1a4e5bf26bd
12. 0x4c89b8c09ddf598c7b5444153280a7fec7f433b49f71b6e32e97b70a3a7df093
13. 0x1924cea6ca8d851dc6c770385cf3ddff5f03087e38b2b95faa540dab71151946
14. 0x82d96787431d530f2599d2a77b24c7b5e6f2bf6720f7cd054b4dc0d4ba248628
15. 0x4a900ec4cce00639b2e45adc5a7ba556793a171aadb927fa15d539147429570d
16. 0xc2b1c84ef3531511a3d8d9db5ff9eeca2725a3782e7f9c4ac87fc0f1588349fa
17. 0x0c618c42b286ad61acd8204aa6dcf024b8b041d3759aa585bf4e221abc39cb5d
18. 0x6142ac48fda269c17791c79da99c2456ac6acfe98268f4d168a404fd6040c703
19. 0x3315fd2757fdd435852cc277377234a3f3909a6d2a089d0e36f6d59aacfda910

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90