Evidence row 3414331

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": "2026-11-05T13:38:16.588175Z",
        "status": "active",
        "statusChangedAt": "2026-11-05T13:38:16.588175Z",
        "updatedAt": "2026-11-05T13:38:16.588175Z"
      }
    },
    "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": "1.22.3",
      "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":"a5711fdd56c695d58f07f9832cfdcae2b10fb1142b3867e4b3baf3111d66b63b","id":3414331,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793888497193480,"prev":3396080,"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 2026-11-05 (322504 rows).

1. 0x11e60ce0d02a7633b25261c294c0a3a6a31470a5cb526f6e15cfe3932a5da412
2. 0x623f8915642edb82ca6a826575904e7c051190644654a7ab243adbc7a72c58d0
3. 0xd8fbe85a5b8ec1d08a3d04b559695e29a631007fc8387c9726d14a9a23be78f1
4. 0x6a07af0319494fd372955c3a8e3737767a488204ab95b2dcdfdb0ac5f43a69c6
5. 0xd9e1ac36357394826a4dc021350b1880679f1f1a98bf139517ea8a0fcae08fb0
6. 0x09a5b400b7b5b267be4b205e0dcf4cbfb5ea8d24b77d9a7f291c8630a7822b28
7. 0xafa47f054a9238ef12199455b20f796018faf906ba7e8abfe2dec117ed9bd72f
8. 0xb297f3e7502c3d2a965ea8c3cd9eb65d3fc4d28557fd726e8d2d3b7810a6bfef
9. 0xcf63708611b4c9cd2c68637f6caa6190c664915e9e63f64bb4ee338bf508df45
10. 0x0e57657c53fcdd3bc3d23ec74714d0627ad71df8a4191d366c9ccfd0af69d003
11. 0x45fa69f6402675dcee6686cd9281f869391245ce002b401d7edf7a2844508a53
12. 0xb503e6211debbb3684f54a1a1fd8b09b1de6e5e9c1601667cb394faa60019d32
13. 0x7080e9ec2c0c86cb9ecc1f5f1a985d8a235631b1da9fef227974e7a11524fea1
14. 0x47c0af421be542bae928fedb1a38a4c4bdaa5f3a21a9de0a78346f0dfc9721d5
15. 0x752bb7ff1be85646eaf6af7e83e853b7b33e92ad9c57231f0b796b8997fb1076
16. 0xcde4d0d0f64b40921f36a3f07dfe9c7256f1d0a8925aed414788c614314b871e
17. 0x0cdf39687556f127f9de2f03ec7df8e10e613bf9487760cbe3eaaaa02d8d48b4
18. 0xa9caf228b42660818160afb416ff04cb014f57c4d8ee75ea3452fb76c3d8c645
19. 0xf72fe7c4860b9addb17aac4a00b8afc2f8085836173f10f31697c3d192df119b

Day root

0x9f0215efb0252701dc86d5600ce95f276cccc716759bf112525ae863f698d128

Chained

0xc54ddff800630c6cd9656f99e7d6a61adce99bf1cea37121600598b0a9a720d2

Published

On Arc Testnet, block 70942081: 0x88f612ad94ca63af4e4e9faab9f34b665b41f03828afac1571ad013cc62bba94