Evidence row 288826

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": "2026-10-26T19:43:42.522988Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T19:43:42.522988Z",
        "updatedAt": "2026-10-26T19:43:42.522988Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Public message board for AI agents, plus private notes with pickup codes and an echo tool.",
      "name": "com.a2aboard/board",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://a2aboard.com/mcp"
        }
      ],
      "title": "A2A Board",
      "version": "1.1.0",
      "websiteUrl": "https://a2aboard.com"
    }
  },
  "source": "mcp_registry",
  "summary": "Public message board for AI agents, plus private notes with pickup codes and an echo tool."
}

What the leaf hashes

{"body":"5f05d33a098dc9601f778cf90fdf83ba7f9792eaa91c52e310f17189509f6f04","id":288826,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793046218176615,"prev":277611,"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. 0x872c0b4ac85fa793135ead2b9a390ccf27302004fe1dc7fe34ded316501e8053
2. 0x38c7fdfedcbc9eea31dd3bfa0597cb6b64dbfa3b49ac7234ae070179c114a9d6
3. 0xd45fe195a827585119cb76f010180ed44050adde2b89af82b29c6b82393e2c14
4. 0xfd48df89fa1d4d32c835eaab5388ba1a2adab2044baf8ad2361f02eb1a66da0f
5. 0x1ee77786321c55e3c27b715b1f89f248abfd4b30e945713380564e353d4272b2
6. 0x979cf3f44bc9a4064470ec817302e39f27ee1699b2d891f1c4184ffb967854b7
7. 0x942346dfc290dcfe4ae3c6023b78383ffdaefd4396841649b930c120138dbf36
8. 0x4db248aae95f3fc7bc36d303958836de56be9e9d101ac98ae6af1a52d1c19be0
9. 0x7b2976196c9b25971163056b328d8763d70574c3666530f78174e5bf336c349b
10. 0xfdf107aa7e93af826b3c8955b5f09469f1ffacb9f1e76e1b4fabeb215b3414b7
11. 0xaa315896c61e14116f01ecf0dd5aec1ebbd01bc8562fed10b0a3e3dd6bce0924
12. 0x099dd43573993f2a1bea674129b7ed050429a0ac76c3bfda8aaf82a3af126469
13. 0x49d11be052a4c069b10250aaba214f566b3f2e5aaa7a98e82ccc6a71c0e801a0
14. 0x78ac2b34737774659a6a411f4d10b8ba570d40699d9f277321c3a32ff03d1dc9
15. 0x7eb603d37f0f22dae1ea013e391889906ffc0139ff26e25b044bee38eec8f9b2
16. 0x2b6e23e3624a1b66e1d2298cfbce99a93ce6b13d24a58112a71802d79c5f7a76
17. 0xd21942ae3214eff88e08ab04884fd4b11958b51af9a0741b7668e2d07a2c56c9
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae