Evidence row 1482030

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://lessonspace.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/lessonspace/"
    ]
  ],
  "name": "Lessonspace MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-31T10:53:22.252835Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T10:53:22.252835Z",
        "updatedAt": "2026-10-31T10:53:22.252835Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read Lessonspace sessions, recordings, transcripts, spaces and users; launch spaces, edit sessions.",
      "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/lessonspace",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://lessonspace.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/lessonspace",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "Lessonspace MCP by usefulapi",
      "version": "1.17.0",
      "websiteUrl": "https://usefulapi.io/lessonspace/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read Lessonspace sessions, recordings, transcripts, spaces and users; launch spaces, edit sessions."
}

What the leaf hashes

{"body":"3ea5af7f06763d2d58a41a05d554fadb1e166abef41d7c38e55e321ecad7fdb4","id":1482030,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793445360314959,"prev":1257652,"subject":"mcp_registry:io.usefulapi/lessonspace","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-31 (246033 rows).

1. 0xb30dd14e4c3fe1586480cab162a66c1129de23ac89305fe283a23476eb781699
2. 0xca937349ededf9dccb8df68468567b3c50814641820699386bf6060bbe46a2f9
3. 0x29a6ffc8d942d8060a4d87276dedf54419753a0c429f73fa1ca8e8d98669c56a
4. 0xe6b671897d64a772776d47a7ed133e74c8ed7379f7f2a24e62dd8ab36e75a8dd
5. 0xc0911a51dec1b0ec9e6487fb65b8c1c041d1cbfb49176fb503d0458f3ec98ade
6. 0xc38c27936bc0ce551309bc8a954d95859b89a1819b82fddbc19ec064358d3dca
7. 0x9eed05aeae9b99b5c389104e5f1848757baf9bbfcc51eddeadc994f6b44e831c
8. 0x7b622409442bddcc4e8a306e7dbd36e3ba75922cff0062f8561a4ec65bec4fe8
9. 0x0a5a16eced0022ab86fea3927911fe638782e0df7dcb46df54285d3616e7daac
10. 0x3e33a796f22b48876daa3d0887de153e16d62cef8e95285a322447da4b1c71be
11. 0x2d3d5a3a9e470b1df6a1bff3880777c94c30e8e3a3884417149a2533c9ef2454
12. 0x5ae0a7b65cc56319c356f6c30697c26127f3d1e7e67bb05a5e0fbc4d103968fd
13. 0xc3ddb373f637398d9ec8fb5c1463a1261a97d1401cfa2b7e180df020e4d48003
14. 0x8185eeafe9adefad89b2d62fb2c2a6beb3fde0409e51deb7d5c1a3c4cb40d65a
15. 0x57afe240b626bf60f6af8c76404811e95ea5519f217fac382bd159177a8ec870
16. 0x2e1cd25ce4079da9bfa6219d7ffec992149add4cd7d5c5b2cfee9908c1c8a5dd
17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0