Evidence row 1817200

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/ViOKHM"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/70969dff-fc68-4902-b565-c8a9e722b62d/.well-known/agent-card.json"
    ]
  ],
  "name": "Baumer",
  "owner_address": "0x985f9e143b68dc6b829ce763ccba97a633afc7c4",
  "raw": {
    "agent_id": "20908",
    "agent_uri": "https://centralcity.ai/a/ViOKHM",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Baumer 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/ViOKHM",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Baumer",
      "registrations": [
        {
          "agentId": 20908,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/70969dff-fc68-4902-b565-c8a9e722b62d/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/ViOKHM",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793561826,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-01T19:38:39Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Baumer 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/ViOKHM"
}

What the leaf hashes

{"body":"3fa8b7d2d9ba416a016944f963fb91d98f2207caadeea604d0d113fbbddaa6d5","id":1817200,"kind":"listing","method":"sync.erc8004/1","observed_us":1793561919292881,"prev":null,"subject":"erc8004:5042:20908","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. 0xf8c23bfa4e12670205e03848dac7c7c9e884c18d855ee78e004743f143aed7c4
2. 0xf6fe53f9e71e1c956072ae060e5a34b300e6f66df3e71c4227d2d7fc6a165ba4
3. 0xd7a272a4df60d93b514c8290e643784f24c311521dbd2368a7f2d669ea0102ca
4. 0xa931c1d8997f4694eccecf07ebd1b94c787422c5689ffc0d721ac9786ef3628c
5. 0x13ed9184a0cfc8ef4c3d3bfd69d6d13842245052f0b74088e867ca23150ba587
6. 0x790162e467d0614ecd4def9f3996f7d20d1713d18599bd5018332979732c9780
7. 0x867031e8b44bbb2a8108ca4bb8e4c2d741efe8aba3daebfb4da541be4b30529b
8. 0xbe76721129cea9fb37f907daeb4b3cb96e3f07222b6429108028152bd27aeb4c
9. 0xa36a85078089b45e7fa3b74ef03a85423fe854ea472e382734c5607ced42b439
10. 0xf7950684634166304626c32f5a60dcb1ffc9d0df5527e97053508cb49dd9450f
11. 0x948ae35a73f59827872fc8b3a229109f1e88f983df3e9ff565812a297d31ecd0
12. 0x93a6b7f41af5d3e3bc733eed46dbda51f57a4d5a3adef140d3df24a1944c24aa
13. 0x4ec6a6783b0fbf13d364df34dd919edbce7190c4f5424e6bc50d2f35967469a4
14. 0x9b4eda8f413d128915df51c98c771c8ee622b35a4252b9c2a803dd51ad66d4c8
15. 0x624db22ddd30d851957cc9d44cc5b314f300cfe0ff69cfbcfe0b2a2df8fdd12c
16. 0x1023fddec22f7cf1aff98422f0e5714dcc4ca7df3408bb6d4550d6f770e5033a
17. 0xf7af9137c03da92bdd37d086da37554097bcd1fce016f93f2e66d18b71970c5d

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90