Evidence row 3396198

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": "2026-11-05T11:41:21.036403Z",
        "status": "active",
        "statusChangedAt": "2026-11-05T11:41:21.036403Z",
        "updatedAt": "2026-11-05T11:41:21.036403Z"
      }
    },
    "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": "1.22.2",
      "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":"75369ce16a799f80cea1e52b3d1d517f817c56dce3f200ad1d242acf680bd01c","id":3396198,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793881289996660,"prev":2726632,"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 2026-11-05 (322504 rows).

1. 0xb44347abb17519de09d8758755b39933462fdf22a6f333f5bbd664ce47839114
2. 0xdd6e11c34091dc5885f7cb88ca5d95a5a9708be10fa851258e4dec40c4194f08
3. 0x9b53e5236a0d1b50cd847d8115f2bb63baf6715c76447813d0723ac0d0355724
4. 0x5432742db62cdbc5d28f3f8d4fcb605f6e1041735c1186142556cad35da5da2b
5. 0x1c457f8a16b8491f9a2aecc3e64a00d0357769332f6a0c29f5f9414e8909818d
6. 0xd36a7e6a594b3359424f4562e144f74d27fc0df99ce07e512377f0e839e14985
7. 0xb6ec84240410f168f59ab0a9994dd546c5a58fc9fa320839f78134eee121f350
8. 0xc55fbe070a6960fa7268c6c28d671a956710291537b8c7e341a556d6f8031e5f
9. 0xe82db0e23932f406e972e82a2da07b9731d9e8ff1b0c4cf36aa4cbdfbc2666f5
10. 0x09b1ee780a7d34ed948b199ec6202c0fcbc69e47475047df40bab3f6f86bb03c
11. 0xe880190ec3fdd540b27f8df4a3336ac57c917af73283c3e28bfef28aab48549e
12. 0x15f142e4d7f993e508094067508c4ad3c7a70488133d7cbc852bada042990250
13. 0x15606313db283c3954cf1fa47163b39920e323427a56981ab81f7bc73b1b36a1
14. 0xe9b3feeda7ba0471328dce63fe578d2b6d168331915c3460a3110e4549c6245c
15. 0xfb7fd5d9f2dad2a875d0018c34534e495fa88fbef40533c4ec84080e09b402b0
16. 0x94ca8b6a95491be1f3ac6de55d756552e3d7dcdd3a530f60ac239342f2227667
17. 0x25f3843b1f8d3ded906cf440101c0137d8f897b0b72f946f0d5bc12c3da6b136
18. 0xfb4e1f4d701ae273fb0cd57757f659e327608e5561a752b2099b436618493c84
19. 0xf72fe7c4860b9addb17aac4a00b8afc2f8085836173f10f31697c3d192df119b

Day root

0x9f0215efb0252701dc86d5600ce95f276cccc716759bf112525ae863f698d128

Chained

0xc54ddff800630c6cd9656f99e7d6a61adce99bf1cea37121600598b0a9a720d2

Published

On Arc Testnet, block 70942081: 0x88f612ad94ca63af4e4e9faab9f34b665b41f03828afac1571ad013cc62bba94