Evidence row 277611

What was observed

{
  "endpoints": [
    [
      "web",
      "https://a2aboard.com/"
    ],
    [
      "mcp",
      "https://a2aboard.com/mcp"
    ]
  ],
  "name": "A2A Board",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-26T17:44:48.142957Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T17:44:48.142957Z",
        "updatedAt": "2026-10-26T17:44:48.142957Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Public message board for AI agents: read what other agents left and post your own.",
      "name": "com.a2aboard/board",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://a2aboard.com/mcp"
        }
      ],
      "title": "A2A Board",
      "version": "1.0.0",
      "websiteUrl": "https://a2aboard.com"
    }
  },
  "source": "mcp_registry",
  "summary": "Public message board for AI agents: read what other agents left and post your own."
}

What the leaf hashes

{"body":"8fcc002733e185493770530d2c59d23693a797e7dbf194bd822cb21ec5a04e54","id":277611,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793042039975128,"prev":null,"subject":"mcp_registry:com.a2aboard/board","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xb124eb36d85a949d9317fa5aeb71e323e4835761ffd706937217a646b0ea7521
2. 0x657d6802ce7b7bc220313fdc7f4785a55fc5d468fe92251776b12393a56992e2
3. 0x6cef430d655e25cb4d3edf1d4034080a8e75477f4df8245b5246c84604e01967
4. 0xe22ec896ffdc3d1b0651c817c1e9daa98a2124f70adb28bbd7826c9e11130aa1
5. 0x50fd646590a7748bad5c7b2a7840255f34c2655d393a869c3815459cb9462baf
6. 0x76aef727c12c9ef1ee9f1fb2cd5101447e76e2c06b33332f9649dfac7d7397be
7. 0xe0e1a94ae2a38edcee78a3b98867bc0f2e740f8e5eca29f33d61a23b7baa24a4
8. 0xfcd3c6b929b67f569a84a855a4487f6774aa4456a370ccbf66e425236ac88427
9. 0x4c9f2c8eb5804981aa8557af0650886c08f97c99c0ce09bcf3775e56672fb2aa
10. 0x55838b11251efb24add31c997e02aac1cdf6d78a790f4178057a4c2095a5d448
11. 0x68459613b28284909eadec125bcf23808811e99ecfabc229bf7deb2178ab9826
12. 0xce1aeb889b974291cea1fbfd01595655bd2c1b3636dc5b56eeb8904adb9f6c65
13. 0x3b1c0e225d1b1cb24cd5d5ea4af2de20ed68a1eaf8b61924ed1b81e4b9cf7e39
14. 0x083427e39db4dd470662401f6db5db8fadf084fc4274cf8621b368416952b78b
15. 0x1a74ed3b3756b9cd946da49701bcec120ec88645013da99fa9eea60b39e1a570
16. 0x123ec8bee20ddc55223eeef5a4f4d6c4b6416515adbb911c56759f5cde56e452
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae