Evidence row 57413

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://qianyuan.ltd/mcp"
    ],
    [
      "web",
      "https://qianyuan.ltd/"
    ]
  ],
  "name": "QY Evolution Engine",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-09-26T13:05:35.557638Z",
        "status": "active",
        "statusChangedAt": "2026-09-26T13:05:35.557638Z",
        "updatedAt": "2026-09-26T13:05:35.557638Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "13 tools for agents: pitfalls, results, tasks, capability. Anonymous reads; writes need signing.",
      "name": "ltd.qianyuan/qy-evolution",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://qianyuan.ltd/mcp"
        }
      ],
      "repository": {
        "id": "1367016468",
        "source": "github",
        "url": "https://github.com/alvinxiao2/qianyuan-protocol"
      },
      "title": "QY Evolution Engine",
      "version": "4.2.1",
      "websiteUrl": "https://qianyuan.ltd"
    }
  },
  "source": "mcp_registry",
  "summary": "13 tools for agents: pitfalls, results, tasks, capability. Anonymous reads; writes need signing."
}

What the leaf hashes

{"body":"be07c14e5cb280f0059f2bf1efa274440c4f9569b07119724f6d7d35287bbf66","id":57413,"kind":"listing","method":"baseline/1","observed_us":1793025442829064,"prev":null,"subject":"mcp_registry:ltd.qianyuan/qy-evolution","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. 0x1f19ec10cdd1cc0cd4a5ae3ad0c0b7cd35d214442d30d6550f8b311bd2b42a43
2. 0x52828dd2376ca53c98b3aa3c55f954bce31af55a6e61d84650a5177a32fa504c
3. 0x633e8706d707b149f3398b5f3172ed45700e36c8c871c534018df0ba17e594bd
4. 0x36f1be4df6fa7351fd0a3d568b34bc4ef8537009e34ad847830cf0d811998255
5. 0xa6053c5362abff835a81b797f5130c96cae4f241d335a51a1e25bf5adab91cbc
6. 0x0cc87b5e1c72f62755cba008b89ef908bd2cdbb0c94a1ebf877de46b41bf2cce
7. 0xe973f0c46949dfc3c24ba3d5df92d3c20f0778ba009d37d0ecdda8ae9507d896
8. 0x05934863f4f8cad6dd8bb702dcfa3dfc3da4fe85f0b5e169d89d3c7e8efe5ba6
9. 0x0b10e7dc5ab384895c77da3c730bd0cb9f4778e76a553abb650bf6d65dc1b5d4
10. 0xef610ca79dfed4e1e00208e978a3a887d70d47190be682de5aa9a473137a32fe
11. 0x3e9f4dee30700b7fef683685ce6c4e483a5869ff14413228fe9abfbaa1a7cd3c
12. 0xbd94b9d1458901cf513783d5d2bc701e3babbcdf9219e07ee2be8fb2c897060f
13. 0x42b0d9d5b53af5b0fe99cee10ce29fe484db78b92ce49f97190cc6d098651d47
14. 0x9dfd312f3d4937f7cb144cee3987e8516f222932b4ea286605236d73cfa1ed16
15. 0xc3a6a3ae44ec0da1848b16d40c45d7aac97a67352eea8df18e0f26edabea8a2f
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae