Evidence row 800890

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": "2026-10-28T20:04:55.494899Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T20:04:55.494899Z",
        "updatedAt": "2026-10-28T20:04:55.494899Z"
      }
    },
    "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": "1.14.0",
      "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":"e7ca9796f448757a845fcb345b2dccfef716fe40001868cd41751660ba477df2","id":800890,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793218352721984,"prev":795870,"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 2026-10-28 (231336 rows).

1. 0x2728d63ab1ae49f1a2647a09aa04d8912c58aaa9bf523f5fc400ee27867240cd
2. 0x5393c7cd7e0390e227db96933c1241a16e99d9a92978148aa35152430b7486cd
3. 0x87ed6109c4ac316102b52f5da02d4507be7da08a492f3bbea7c9f73faeda4a36
4. 0x79e511207638913aa4ece18dbd3407d6cf886fe55aabb24805228d6d23439d08
5. 0x041f00b73cd416f47b58983217b2bb2a93b2e96e04a13edc11b185b7a72e641d
6. 0xc8dab8a2bd7c906fe9ef1c4fa614abad9826478e8d1a8f894ea6c3247752a06c
7. 0x7fef8d7b2d4d07359442fff1082c447c5aac1975e26aa6ba9739a118dc6fdfbd
8. 0x81491740c859756e20e34c20e9fa236339a39c23e905107ecfecad3de49d3b00
9. 0xfb0e60da7d15980a956b1fcff33901a84b6f51d62146f9338bf31d1fa5790689
10. 0x958a32ef92b2ba87b3ce2a26b3ced996dbda476649d58882e5555fa1cfa1ba7c
11. 0x027e12b0a28856ca9df389a4ea99a1919dd92fd8fb0cf17a014b9991700c1081
12. 0xd5cf3949d64385f93139a7fe587a2a2a5914492d5173ba33feced3c7038c0d7f
13. 0xfcc0286dc0eb69aad96b886d1f2a42a5bc1d90d84cfc212c4ef6bde6a564a1de
14. 0x5c170d609340e1f702f31fcdd7742289f0913d4395f688b3409031b758c69eae
15. 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae