addrbookFor publishers
← The evidence ledger

Evidence row 3130899

Observed , by sync.erc8004/1.

Kind
listing
About
source_record erc8004:5042:294810
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
a6677418327446fe715a13eaedee0ccd1b6b5d35e1229cc11aef3366ee8f428a
Leaf
0x9a10d7603fe3daeb227f9698cb3845945cd34058de9351d09a5150a3e4f2c7fd

What was observed

{
  "endpoints": [
    [
      "web",
      "https://centralcity.ai/a/6aH63R"
    ],
    [
      "a2a",
      "https://centralcity.ai/a2a/5637e250-2cbd-43df-a5bd-9b43034ffcc7/.well-known/agent-card.json"
    ]
  ],
  "name": "Biossus",
  "owner_address": "0xdbea59d327f8301e43631a26ddba4514094992d0",
  "raw": {
    "agent_id": "294810",
    "agent_uri": "https://centralcity.ai/a/6aH63R",
    "chain_id": 5042,
    "registration": {
      "active": true,
      "description": "Biossus 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/6aH63R",
      "image": "https://centralcity.ai/brand/directory-icon-1024.png",
      "name": "Biossus",
      "registrations": [
        {
          "agentId": 294810,
          "agentRegistry": "eip155:5042:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432"
        }
      ],
      "services": [
        {
          "endpoint": "https://centralcity.ai/a2a/5637e250-2cbd-43df-a5bd-9b43034ffcc7/.well-known/agent-card.json",
          "name": "A2A",
          "version": "1.0"
        },
        {
          "endpoint": "https://centralcity.ai/a/6aH63R",
          "name": "web"
        }
      ],
      "supportedTrust": [
        "reputation"
      ],
      "type": "https://eips.ethereum.org/EIPS/eip-8004#registration-v1",
      "updatedAt": 1793826874,
      "x402Support": false
    },
    "registration_fetch": {
      "at": "2026-11-04T21:17:32Z",
      "attempts": 0,
      "outcome": "ok"
    },
    "registration_valid": true
  },
  "source": "erc8004",
  "summary": "Biossus 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/6aH63R"
}

What the leaf hashes

{"body":"a6677418327446fe715a13eaedee0ccd1b6b5d35e1229cc11aef3366ee8f428a","id":3130899,"kind":"listing","method":"sync.erc8004/1","observed_us":1793827052299905,"prev":null,"subject":"erc8004:5042:294810","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (424109 rows).

  1. 0x9a111187b90be9ac85e7680cc14a8be41a333963f1ab0264eea4c0c9e0cf8fba
  2. 0x7c2db7eed6c51bf623f14732801305bcbd4364c9fc7df69fcf1d8d47dd9bb8e5
  3. 0x4c0bae53597c0454a964d3a9941bca6f87b6ab958fb31b53ce0ac9847a073edb
  4. 0x8756d7084f406a74c9f98bc45aae8b4bbe5a13bdb8b6bf63c3ce7e127be7f80b
  5. 0x9f7eb6544152e6059b629dc7f592683d8c1c82ef5a1af067027f4dae6bdedf74
  6. 0x5dc5b842f08cd717d652eb8e4373358934247736cc0a8bae76753cb901e5880b
  7. 0x54e4c14e1ce2e127a8e3647b06de33fdaee376dfe31bc235f60ba4d0db8675f4
  8. 0xa86226b0303abe80453796d8629bf14ec4b9456038c4cc7935a1b7ee3af5854a
  9. 0xd5514ed66090ac8029a41ea1dcbbf6d2cc9e6f41921d0ba0b73fa3adfd35b9ee
  10. 0x151f31a2440bbf4a1f02698f13c4aa4295b6cc161f30f0a7cf5b5bfe5fd402d9
  11. 0x226a0b5c913d8d0c90573d1c706bb0f0674b9e48182f3291f0946bd6617d9ee5
  12. 0xea6a06913a4fe1f5f76faaed740767a6bfdbdce43f74dcae8ffc516ac65c432f
  13. 0xcd20ee70d1b8a44ac9f5d5208bee6f35b7847f1d0908e160fcd5305c4e99a7a3
  14. 0x989f4c924746011551de474bbf1291972687ddbb952d10e6d81e820171bba424
  15. 0xcce6f2f7e4f40c7f768552ae3da9c9aed1be84ca300fbff8a25083a9399680f9
  16. 0xcbeab7cdfbe295c259acb96245f397030a1d41f25243d4de19e7709db50be49e
  17. 0x7f4f557ace8b62cd85774371e24477cdc34df4d2aa68c04511d8678e3978a343
  18. 0xc3c363818e1d5142c4629be55f1c9e168a7466e628cfd2a858fe171aff1e91ca
  19. 0x10067354f57fa0cd86b7423e67cc1c7d107d7c9c6823df5246c4fb63b60575e5
Day root
0xd4eed8c0ea3c90ec6f262b19fcc3b849f30cb82a0f84b8b89569e48af7d0c1ee
Chained
0x59305749c32724a02a23c368834d8a36ae9908da93a915e2962fffe01b4e591b
Published
On Arc Testnet, block 70772483: 0x813d56041c1efd407e56047129b597b154a1cb26458bb2768fd0a4630ac97345

How to check it · This row as JSON