Evidence row 3764418

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://addevent.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/addevent/"
    ]
  ],
  "name": "AddEvent MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-06T19:35:00.511537Z",
        "status": "active",
        "statusChangedAt": "2026-11-06T19:35:00.511537Z",
        "updatedAt": "2026-11-06T19:35:00.511537Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read AddEvent calendars, events, RSVPs and subscribers; create and update calendars and events.",
      "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/addevent",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://addevent.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/addevent",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "AddEvent MCP by usefulapi",
      "version": "1.23.1",
      "websiteUrl": "https://usefulapi.io/addevent/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read AddEvent calendars, events, RSVPs and subscribers; create and update calendars and events."
}

What the leaf hashes

{"body":"43df43d297e1c373b7ab007abe9a8174ccbb5f303dcf97ce97846682cd6a6e58","id":3764418,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793996581118523,"prev":3723253,"subject":"mcp_registry:io.usefulapi/addevent","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-06 (303443 rows).

1. 0xa248252b8fe392010819cff41b8d341a8923d1afbe18e5fc3c8381bf98c695fb
2. 0x3e1a68001cd95a0279cb63819dd6cb21ad0ff1ead00a5f8baffde8e3c8d43c96
3. 0x85f5e54cf97d7440a1b0f90210e1eece7810f81e4a4a27411e34fd92f074a9db
4. 0x5059846207b687e93903f0251f530d0787f02217229a919a14449a8fab5d2a1b
5. 0xc5cf99a6922929d183ee68d6fb3eefcb918d3231ed13d2dd32360c16a74d40b7
6. 0xee7caa751f2c437e8faddc11cac6f7d622e9f83e3c7e6a0a3ebff697e1fbb774
7. 0x715fc34f4818bfe907841fb5fd608ce451340b9fd82ccbc75465214bc04df819
8. 0xf39d79a8ccc53252e2bb2c1a9552cc80dc7ebcccfd7abf441e531caf7937e168
9. 0x51a611dab47c87391a41b33e235e0615993ebcf558947098ee6f0274b813a2d3
10. 0xc27ca95a0c96c69e9fd620f120508c9b0ad1f790f49e04e3328290793fceea0b
11. 0x3fe6289bd20818ae555042acd234a79f5756922a7009cd699e37772d65f58d7f
12. 0x7cce6fffbe22244741d44b5dcb72e4a10108cfbb61e00838d7bb22693ae35f9f
13. 0xeba58732869624de8ad69d27c52fb854ef5dbc382a5c87153e289214c07f17e0
14. 0xcd45cd6804cf7e7d1e6909626f817ebe91b3e48cfef9aaae97c8bc90ff284ab8
15. 0xd0ea1c67876a6aaf3607745d3124ddfa46a7db70cb95b8b0331a1db5672bf932
16. 0x15b694ad919111e31e8112077ed1645b2f3c0d6f1433eaac3aaf1fff1c7c8aa5
17. 0xe98c6c6b56a21a2fc4c1edfe2563812e690a6a4336d11aef772ac1799d1ee7ca
18. 0xd422a75f6c3780ed53eca52b50bf40b8f17dc14cffb804142e44fc9f2672029d
19. 0xc0d08d48601d1be90bcfc025e66bcaa0030120d688dd9c919b36c2c4446f4948

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1