Evidence row 2564661

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": "2026-11-03T09:54:30.483304Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T09:54:30.483304Z",
        "updatedAt": "2026-11-03T09:54:30.483304Z"
      }
    },
    "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": "1.22.0",
      "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":"ea671791411216ee658066825f56ad82ac6a2402da14c41ff2b4005f9167b200","id":2564661,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793701161674057,"prev":2546556,"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 2026-11-03 (425475 rows).

1. 0x06981f3178e4bef6c127bc57eea764032c955d104bc26977102c4b47ff60e0fe
2. 0x9e0054dc9c9aa81558764080417d999169767133eb9ade31049f3dff07b4e8ce
3. 0xe5e018f085a7e08cfd5a40e71ad96844dc61618a1467a631a25c642835d7caa3
4. 0x9f639a182b30fa78fca04681c12a48b48e86012e435f34c6ed9edf67cecef3dd
5. 0xb4609ee79f2dfa4facc95a3021ff5b9b6367f1d5b71855a8def081a5b11646b2
6. 0x422f2faf965835a8367637d98a2dcbf649a3da20b9da5430015d3977246b0fb9
7. 0x5cd8e6a67832a8c0500a22df93c02b505cfdc0662aaa79e49b327a350e7c350c
8. 0xae48476d9adc25eee2648d456a0dbd88a26e937d47b1a7608a4fb501d2ae6cf9
9. 0xf775ae4a2ee839665dced601558fa2623537eb1adcd552854c52194b53aa0f83
10. 0xb7bdac6195c86d251d9af344f32b1b73fb488b39cc973929474b69c224e12408
11. 0x28af510117971e0a14cff23cc0c14163bca41b85bbf8f031c5b9b87a02a1f8fa
12. 0x03ee3ea4321cdab90fbd09c4031a0cefcea1b5b6bf7acf3c1e5f0b9e515098c7
13. 0x4e70d4f3d8061ba1880699efd21e122cab4e2a786faff4a0cdc4700d17a75055
14. 0x93ab7dcb2777a66a8864a3266602159fa29a49683bf095a1ec2a005ab2d78703
15. 0x4c65946e46ac859ee8bcd510bd1ff838776ef9d9a553f743da25e2fd4c4ec5c8
16. 0x06da6e1933d86a9ec29befc4660e18827c5663bfa2083536fe460228c0434945
17. 0xa82fcd0af08a38380e777cb578b71498d941c589c6401f31d445e1685adcc978
18. 0x012ad914f3f945da3b6b48eddc7a1388613e4afc04339deb76c609611864e9b9
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7