Evidence row 26899

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://agenttrustlab.com/mcp"
    ],
    [
      "web",
      "https://agenttrustlab.com/"
    ]
  ],
  "name": "MCP Selection Lab",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-13T13:45:43.413827Z",
        "status": "active",
        "statusChangedAt": "2026-10-13T13:45:43.413827Z",
        "updatedAt": "2026-10-13T13:45:43.413827Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Benchmark MCP tool selection with metadata-only routing, collision, abstention, and holdout checks.",
      "name": "io.github.ChanghuLiu/mcp-selection-lab",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://agenttrustlab.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/ChanghuLiu/mcp-selection-lab"
      },
      "title": "MCP Selection Lab",
      "version": "0.5.2",
      "websiteUrl": "https://agenttrustlab.com/"
    }
  },
  "source": "mcp_registry",
  "summary": "Benchmark MCP tool selection with metadata-only routing, collision, abstention, and holdout checks."
}

What the leaf hashes

{"body":"39a0ef7ecd3403bfd91bfe32e1f095d3d40fcace138e56218e6811fd9b2048d4","id":26899,"kind":"listing","method":"baseline/1","observed_us":1793025356683421,"prev":null,"subject":"mcp_registry:io.github.ChanghuLiu/mcp-selection-lab","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. 0x45f721fa33b18fe56a2f7555446ceb66a0720cd1afe3c7fc302cee732625c600
2. 0x8c09db634729453e9b211ed30b9bc99416dbf0b490aba9577e6df28d5bc0f896
3. 0x775726723f3dd306d1bbd8546fe3cc56b51a755ea4381cceb2aa260c71ca66d7
4. 0x6eb9cfe9f8f6c63d37bdcc6fb69ee7fec86321868b32ffa98f99ae1e65659e46
5. 0xaf7e250ba5ef9df5de7c8fbabbba329c5c880c5c1e67478af4d7a12da026286f
6. 0x05a395ba5bac36638a002b380b0fc4e80e97f382d24d2db640a54acd3429c30d
7. 0x08fa23d742c9b9683569dd6d039c48e1fef78ea9a5f03e8597529243cc5cbf73
8. 0xe4e974ebf3d64d9dca2e444bd8b764f3046890f6e6a2379a65b1dc8bb0498c53
9. 0x98f4ed6c9aca13da1c20894a7047277266eb8ec70dae0529babc30e087104ee4
10. 0x6a1f5a35af750ae279aa449f09e871daec7daf61e24910bcb67b1594232df31c
11. 0x415bf66d9c632a887484603836ad3f90715af6f56ae73f0a5711497372ba0265
12. 0x804dd9d5afe0f1a780e24099fb6b21f5f20545893ea0eeddf5fb9114e2f3edd5
13. 0x54b29089c0a3cbbd6ddbe58944696110984dd5f418275cb1b77f957c56da8eab
14. 0x8b27a4c21bf4ba962fd008c8f4300bc6953764a5032b9ab0cfe696b318c45326
15. 0x4b52a97f7a80ff7778a702b85267b8d2e5c93ce160942656435c29ae7be68bf4
16. 0x2e6a32eb32761c210560e852405e2f865f958ddbe01027894f8b9c1b3433b9f0
17. 0x9a83be955a206deb65b995adfd92c58fa31c95fbbf926bd199d300e70b08b26d
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae