Evidence row 2130324

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": "2026-11-02T11:22:56.850349Z",
        "status": "active",
        "statusChangedAt": "2026-11-02T11:22:56.850349Z",
        "updatedAt": "2026-11-02T11:22:56.850349Z"
      }
    },
    "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": "1.21.0",
      "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":"ce44d72c49d5badbc7de932bce268a8703af0be162d2b9a8ff69bae0ec47184b","id":2130324,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793621910648588,"prev":1541349,"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 2026-11-02 (444186 rows).

1. 0xf078ff2e112f70346dc8ef22bbfafbe2d7265973c7f6ba37467ad1acb0885b06
2. 0x5b96b15d3577b7ed8b5f02010a1724e397832fb21d78ae8fa91bd6653cb42462
3. 0xe2aab60a7b2e79960459350a580516808d9816fbe38ebf47b1840eff8d04f7ec
4. 0xa3c23690297bc7d417c5d4fc860be37d3b6612c70ed1951f0659790c8a1e5ba6
5. 0xa58c13f6f8281da733ceed8c4564590fb99ec85c796e991dfa90a036a4a587f6
6. 0xb52ce231ea9c274e34b22604650851bebb0a75a85bd348e9413641c639b634ad
7. 0xe26f551317b7dfab76505e1c2943eeb76da935a8a38ff76951ec7cc47e7f2f9d
8. 0x1e67dbf0a6203ccc62c477cefe0eea53cb216d2278db0fc0641828a3cd7b6b0a
9. 0x26e88d00b5dbeb32ff5e13021bd68a5122a95bad313958adc17b1947cc905d9b
10. 0xcc62750abfa340f975c5beeaf069f075f98f71f1c4c9df9faebe3ee901fe7882
11. 0x1f629f8654e40ac1eb46a732061a356b88841de73efb2bd0c301a7414c5c5fde
12. 0xfe5fafbda84768aa127517412dad46b6d52750c98fd0471847d383ba9c0ebea4
13. 0x6a66db154e32d45aa1f1ce72719d9372fd5cdf4add16d249006bd3cdb0f7c074
14. 0xbb465466dac90179fd91fd4d3b6985e80736d1ab4662dc57a78b5e5098d6f074
15. 0xde6a8fd6590b70565baa6078cbc8add8d94950fe959ebaf8c3716adcdbd78aa8
16. 0x6dd7e4db65395e8670c7c2747d44fec79e03305934ef4746bf5dbca04ec6ec49
17. 0xec5d643575d83c9e07e65deeef71943b53cbf3007e7e2b9a6ef414081509b0cc
18. 0x252cce55f1a3d5391c16f82d7f62494429a5f69b03486d4cfcfb7b2c96d6c884

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af