Evidence row 1257411

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": "2026-10-30T15:16:01.744273Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T15:16:01.744273Z",
        "updatedAt": "2026-10-30T15:16:01.744273Z"
      }
    },
    "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": "1.16.2",
      "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":"9eb355da7f531a0e5da40f7c2f9173fdb3209fb05cdbd9f8a6f1cf80e8625a79","id":1257411,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793376927952222,"prev":1249421,"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 2026-10-30 (243099 rows).

1. 0x6ca6bdc129fafe030dd6360c84a52fbad12deb829dbf2f6d0c291928dcfa5c69
2. 0x02394ed19fb29cb06af9cfca5fbd694fd700ac2a59c6aa8ed6cdcd962b39caf0
3. 0x91fb149ca7e80fe3cf19e43e5c90df5dad55f3f850e9ebae6f88a8674dbbc2d2
4. 0x4abea165c8f00a2c7af3f212fec6e8876b7f56b95f22c536cdc1685b508d114a
5. 0x43c3d6d969de1447d1b377b6f4797aa08e20d14db62d411d2fce35b6edc99f9b
6. 0x69f142bf10ed026fe2f140ebd052e7edc664b8520a75de2a69eb7104a987dcb4
7. 0xd4af28ccb9c654fe9a1ead5ca3a3ae08fa8dc0e666c91750b7821492b0846f94
8. 0xb4251b053c191d797122a22d56b282baee091c5df21ee8e29218e65857046a21
9. 0xd9730d866c9a2ff7314440bff26be5966788f85c1fad0bf52d0ec39cd063e9b1
10. 0xb232d4e7b7811ac1db9ba7f77df22f7fca9ef6a8e0c194d0dbd0027e05b865a4
11. 0xeeaa7cf434ce258bd104938fdd286b223d22b7af8d5f135c4b1fb8d42293c53a
12. 0xb8ec68922623837ba81250fe50c2024efe5b0857186a060682b8ce9bf2bbd784
13. 0xc225d4c733629f2989cbf475108685bcfcb582ffb150d0eb6a144bb4f04abc02
14. 0x8202f11cea96bc04aa8008604bab4ab58756d5320e52685eb327ac1bb08a0ee6
15. 0xdf25f5d38e3fb54d3e66e3bf876db529f619041e0d21f0bc35b80003418e3d9c
16. 0xdbaaffa44665d1fa60d33d2c4075bd87629b76d01a6ee63e621e78590303b56d
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861