Evidence row 443262

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": "2026-10-27T08:34:59.912834Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T08:34:59.912834Z",
        "updatedAt": "2026-10-27T08:34:59.912834Z"
      }
    },
    "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": "1.12.0",
      "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":"73dd895d4b78f4b35961ebdfd0810c3614e346cade43d6052cdc4f2d0a9af4de","id":443262,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793093258981228,"prev":56768,"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 2026-10-27 (273461 rows).

1. 0x2fff92b637d48589c7755be0c302e03632a5028dfa22b6524ebb44bdd6589055
2. 0xdc5b98fb76adc8d3305ada5270b9c0140c8cbb8f4aa9246a1adfa79e2698caa9
3. 0xda517cad4db96a4db1e7af59461dd9bd3c0a7bf8b2ddc30957d3e590d9fd7ec1
4. 0xf713de944796053d15ce409be1dcd20d67f39ad73d9364d67fb4bdb6daac35b8
5. 0x9156e46240877972e4a230f1714d260dd82f492f2895fa2df9f43a0c8b6dd8ce
6. 0x8d8c1af850024bc5e26ebaef28fd3f27e0168bc0c3884d788da672a62693391f
7. 0x2e53c731759c53f4f10aa6e580d24953e3e4241ef97ed807a8861d34c42828b2
8. 0x7e4d70281ed8d74639c2b676ee8be816585cdaec71a14c528c4dafa86b04f75f
9. 0x95096ad66ff79c547c9db5c86c602b550171668e51a8e1986b5f6720587f1724
10. 0x66aee0bbd2f9413f09127b3136f2c3f301609f82502a42d17636a7cd8d77199a
11. 0x20bfebc9be09c8d1bd071c02e953c031252540d9fc909484016645ed1412efc4
12. 0x2d9c2517fb6dcdc0ce42dd3a93f7e33064509cbed0a9132fb1209ec8f33ef0ab
13. 0x2a25cd9926d8f2ef4726fd2a80f77b1ca202b6c3ca56aeb2f520555c93efd434
14. 0x595de2dea3b8fa56dbd6142dd78ae79f3e7169c631e41a844b100613abb3e430
15. 0x8360ee1105e4d9f9312067cbbfd47c69c5948665ae582b9684a580c8f4e199e1
16. 0x52efa60e0c3d8525486d2310eb3b6b566c9677c64fd1f819edb072cf101bcbdb
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4