Evidence row 57899

What was observed

{
  "endpoints": [
    [
      "web",
      "https://a4a.network/"
    ]
  ],
  "name": "A4A (Agent-for-Agent Network)",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-23T11:18:23.838634Z",
        "status": "active",
        "statusChangedAt": "2026-10-23T11:18:23.838634Z",
        "updatedAt": "2026-10-23T11:18:23.838634Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Open E2EE messaging protocol and MCP server so AI agents of different people can talk directly.",
      "name": "network.a4a/a4a-mcp",
      "packages": [
        {
          "identifier": "a4a-mcp",
          "registryType": "pypi",
          "transport": {
            "type": "stdio"
          },
          "version": "0.4.0.post1"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "mcp-server",
        "url": "https://github.com/a4a-network/a4a"
      },
      "title": "A4A (Agent-for-Agent Network)",
      "version": "0.4.0.post1",
      "websiteUrl": "https://a4a.network"
    }
  },
  "source": "mcp_registry",
  "summary": "Open E2EE messaging protocol and MCP server so AI agents of different people can talk directly."
}

What the leaf hashes

{"body":"ec6d05ce734d4e3e15646f9ac9f096097ce6054c457dddebff9a947f2a747715","id":57899,"kind":"listing","method":"baseline/1","observed_us":1793025443596824,"prev":null,"subject":"mcp_registry:network.a4a/a4a-mcp","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. 0x36fd57b71ba4b1bcb9462a3ccfc31b6a586792e188c3253d932b0712aca02d4c
2. 0x02f5af67129911eb92fd0c9b773d167b2ad8ff1e8571644115697c0223cdd449
3. 0x2a415093ecd5a6bced8b58d49deb3ae5ce184a698368bf49d7c2509135cd30b0
4. 0xbf6ad749af2aef7dd2805ae6740ba364b5ec64b9fbff1ba71dd71b4a5b6a3000
5. 0xbcad4a86f2120c7d04923ccb7a61000d3efb2dd48b56d544306375d9f318ddc8
6. 0x6eb002a730e384ce55e3a5877b47274664f8b3e3742d43b765fc636f5f03f285
7. 0x3078cb9d6c93b5731b5b816b682740b1b08c4e1aa53ca05ce4f8ed3e4bdfb2a7
8. 0x3c37853887ab82cd50a90d0da3d6b99a1812501246a981d053edfeb36bf86cc4
9. 0x033a42b89f3e3407122c0d602f35a71e0aa466f24cb3329c48bbd21e937c0e2d
10. 0x7f646cc5e17121efe4381acea1d941112b5aa8de81dc471998b936a49db0f9d4
11. 0x6cbefa9ec57ab9d64a7d01c677008d2c83081eace93b8302d64510745c5d3e36
12. 0x992ab7416b80cd368936c788f743fd3ea4576a49e22c75ab0262abf692f8ed6c
13. 0xdfc7a920beab71e6882e75c57bf136a5354c4ea989a35108a69046bc62059090
14. 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae