Evidence row 3987010

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": "2026-11-07T21:54:40.40377Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T21:54:40.40377Z",
        "updatedAt": "2026-11-07T21:54:40.40377Z"
      }
    },
    "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": "1.23.5",
      "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":"b7c2dab75b4ad1e124b06baca8909a702c60dbea5053dd2598e5d0ade42ba185","id":3987010,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794090327018799,"prev":3958240,"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 2026-11-07 (195826 rows).

1. 0xbf8c388eb698c1d5a056ab8213b13b6f7c936cd770322802b065bf7cce37c2d0
2. 0x4e5312549443a24d426d4796518879a654d23e52923d06cff3079cd528d35d53
3. 0x3cd1ce652b4cb0076b946dcbe23ce989a7777f38819c4058d07e0fc52910ae09
4. 0xadab062471474ba6f010d9187c7d5dc8be039ff1134f44657898e8c5d316152c
5. 0xedcbb1582dcd469457aa355f6a7a816abcc3ff99857bdb4e66e922651d2ec6b3
6. 0x26566937c6aeaa5a71c887e849a35d6a40a3050063d7c04aea3fb6d7faf59f85
7. 0x169c47e7f0614be9bc6edbc93c21b0ae466f9b71d14847a2bd800ff00994782b
8. 0x12c294c06bbaebe8194a6b6b2953fed3828f4b2bbc95eb2bec858e63bc414d89
9. 0x49a15379b38b86c2ad33eeb374a80cc460fbf2d5701994a54028c2436345ceca
10. 0x72fd68125f811a4d26d228537a0150899a60df20bfc4cf26ed5279e08d3f431c
11. 0x36c5b3ee5e891cf1fc76af30ee991b9728fe93e4ad66bab082ae4fac86c7a1d1
12. 0x9f5f45a0cf6b6d16c0d7801faca5d304f239229e7e703d4bc0499c6f97f5ff22
13. 0x597bca2edd57bc2e06f826c348f71c9868f1f1c93c364b62962fa5d28f3bb182
14. 0x7720754cd1d565acdb28ae2e3c2e759562843c986908d08656bf4c41e785a347
15. 0x2afbeaef1e4de4b2a6d70326e3dc41f9f1c65d4fc46630d217fc932790b0680c
16. 0x3235c8a33ac14441f1a12a6515f670286d48b48fa98eb1dce45d902e053abe01
17. 0x9ea7c2ecc6985da4b761b0f9096b7858b3ac8e3e47717c3840537fb2ff31c6df

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa