Evidence row 1541447

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://practice-better.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/practice-better/"
    ]
  ],
  "name": "Practice Better MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T21:44:28.564883Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T21:44:28.564883Z",
        "updatedAt": "2026-10-31T21:44:28.564883Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read Practice Better clients, sessions, availability, services, packages, invoices and forms.",
      "icons": [
        {
          "mimeType": "image/svg+xml",
          "sizes": [
            "any"
          ],
          "src": "https://usefulapi.io/icon.svg"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "256x256"
          ],
          "src": "https://usefulapi.io/icon-256.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulapi.io/icon-512.png"
        }
      ],
      "name": "io.usefulapi/practice-better",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://practice-better.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/practice-better",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "Practice Better MCP by usefulapi",
      "version": "1.20.0",
      "websiteUrl": "https://usefulapi.io/practice-better/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read Practice Better clients, sessions, availability, services, packages, invoices and forms."
}

What the leaf hashes

{"body":"405fa8bee3c500b4872cf8d5929ae6e649371aebef862695f7e99a87622ef28b","id":1541447,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793485023816429,"prev":1538035,"subject":"mcp_registry:io.usefulapi/practice-better","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xf86e08416cf0769a6713eac4faaeac2cd0bbe2133497de9e26c4493f21120843
2. 0xa85152947f57f3b673dd1a804323b35090426816cb2412e7d230083ed10bf8ab
3. 0xe5d4b15944095f19a095efcb887608bd5bfda8b131c14872bf15f0d42ab3ee26
4. 0x08c100e5748a1603334bc66414d40f7ede34db7aecb8fd1eeccbf804d2b6139b
5. 0x6954adcf8fe80bf050e5d9c3bc7c3f25c44c773aae166343c5f3ddb210ddf2af
6. 0x73e4de8d6485fdc9f6f8dfa0588220d52e781a9ce8e506faa82699cb341eec58
7. 0x4626bbeefdcd815d8ed931a3337397aa14dc90ef91f36f472fe2aa3c0dba72f3
8. 0xdb50e1b6764a1ab49155c7e19d3bdb2ec238cb7f41e1d57919a95d3ad07a2866
9. 0x47781d1e89252b1af39f973096d4d6361e277de1b8c9944e83b723cb2c58d2db
10. 0xd4c55e36e16eab703d0725fcf75f0f862ab53ac7accd8965be2737a44ee6d367
11. 0x57d04e8c0dfbc48ed42709d97edd65eaa6f019b6e775d93d626d53b8f8c8fb39
12. 0xe88490f2b8597b4ba31fe5cd2844c81e5da21890cc3a4b4c1dadbb6a939407e7
13. 0x6c4324d3edf63f1c5818a600ecde74e6316cc337c4218b73b366a817b8e059b6
14. 0xe2a6611300abdb7312e664a37fe7f1b470ff8ebe48733a7b7064c0db1f012dd5
15. 0xe9e97d8cdaf19b6da06606a22b4eea548063df6bacb661abea4c37aa637b5c3b
16. 0x4befbbd74452b2a3a89b7e1e809ba011f1be78aeb8153059503fda47c454d086
17. 0xa1146af524f673843507e7427a575964580eef01bc0e0eae466a7920df017ab2
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0