Evidence row 2546673

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": "2026-11-03T07:15:40.575136Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T07:15:40.575136Z",
        "updatedAt": "2026-11-03T07:15:40.575136Z"
      }
    },
    "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": "1.21.1",
      "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":"4cdf54b3565e8db95831473c246625ba0eec7bee0c613ac8558bba4ed64ba4b0","id":2546673,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793690349554447,"prev":2130439,"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 2026-11-03 (425475 rows).

1. 0x3598d66c01e801da6ff1630ae0678062ee62b0db91ad9baf41c411ea6fd35177
2. 0x665e16e2e7cbf08af4b5c7b1adcc9d1356269c88cb6fc4da04befaec52c7393d
3. 0x1e547007c38332bd221bd300cff65f356972b65a25fc25677030b381b8106a42
4. 0xffc5729b016e57948cfa8c04e1bd0b49be1d9540bb4f95cc55c33e4d73981072
5. 0x8c720972990d69736531cf849d631860d1f3dc4f00591f2d20c57463c0bf8412
6. 0xac03e0004c7fdba35ab426b669d3af4df3c6d4bbbe2a3c7a18bedbaf76904db7
7. 0x9fb28f54358f20d17cbf532b46fea627a62714197f325a9557be165ad8a14874
8. 0x4a51665425d6a97001fc6e81d1d9dbb1aae2e39d823f46d3ff53749dc5da72ca
9. 0x36a4e23da05c094781b1e75f736046ec28465730f5d80e3ddaa38f533109de25
10. 0x18de504cc1a50506d6e411373eddf614f17ea2cd5bc641be69c535b41c1d04bb
11. 0x97fb650f81d5a04e2c18ed988e3604eb331f26743ec7b2969105425cce6c3d4a
12. 0x6e30ddd5949563f436a222ef56025cffceafa86dc425757344956cc235277d7b
13. 0x013a4e21b3841f82a4251c6d3dbec726e8806f20823e735f7a5fb54b861e55a6
14. 0xe2bf4675db929800e127e8a752f51484d14d8f7a9d806273bdc68a1dfd125e44
15. 0xb1fe1f6398b7faed977bc6cc75b0a8404ef5a6cb386ca30aebdb7450b7bb6dbe
16. 0xb1804d44f1a591de3b8b8db8fe72e8ab6695e6d154862ee8ea77b6ac2b43b67d
17. 0x87df2ed9052c264d606c076742aa7e54b69fc8344b21e972ebcb19d020b7ecf3
18. 0x012ad914f3f945da3b6b48eddc7a1388613e4afc04339deb76c609611864e9b9
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7