Evidence row 2564309

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": "2026-11-03T09:54:23.155804Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T09:54:23.155804Z",
        "updatedAt": "2026-11-03T09:54:23.155804Z"
      }
    },
    "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": "1.22.0",
      "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":"a9ce01439b8cf724f67ab6a9eed27c3afe92fecd70b8c56d22b6b4f16f0a9d54","id":2564309,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793701158476383,"prev":2546204,"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 2026-11-03 (425475 rows).

1. 0xf09feae5994048a41703232e29328da3728b71ffe2a01aeb76b6df023fb3217f
2. 0x1b50601f32c911577c1a79f28683b827cad7f63f45702470001635ea6be6578c
3. 0x09587f26a64fc8353e32288761da2fe40c1b8d1f5096f58b9f1bb462177cd3e1
4. 0x69a6abafd92e4daf241f7d340ead736267263c0bea9b62be9bb65398be71b002
5. 0xda36463e49451c2c69126ac671c218065a9e1c2c109a8101f4616ac8883ca4b9
6. 0x07121612f49455948b4c69bf8282273d5d5e7d89b75479b97ad01e7a9aabafed
7. 0xd60d73c28a1c4cbbb23cdebe0df04003ad3f31122df90e49d2b835e580e36076
8. 0x4bae1510aac68f1575527b7b3266ae9e3183b8e73e9485463461ce47e3efd801
9. 0x6783f1cc0b0331844c1cffd3e00159b0930bf605e9f8e3799f7ca7f3f83a23ef
10. 0x363450a72ed45cffd7391998877c0bc0c047abd567745163d46b5a9959e0f6cf
11. 0x883ce8fb96bbe499d16bede50ce6a5d729db16bef3ebc5dde8c7937cfcb56267
12. 0x901c24c016dc6da511831e817ad3fe1ceee6eeae1e8a1c2772c3925e3a13e6a9
13. 0x392d1f8e0d95573ecf5e48b86b7c22bc722ff63cad3e9bbf07a0e4b39157384e
14. 0x2548979bbd7b1568b5a14db6fca0201979c48165192f2b55f45fa21471031e4f
15. 0xa29933ab8020ad948edbcf3e65194e73a6b113a0063231c1105b56c2d59ab97d
16. 0xd60b16e6a71fbffc93a233ee89f916e50c0206a56f52c852b85e5a246b6b417c
17. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7