Evidence row 3987236

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://updown-io.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/updown-io/"
    ]
  ],
  "name": "updown.io MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-07T21:54:29.303091Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T21:54:29.303091Z",
        "updatedAt": "2026-11-07T21:54:29.303091Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Check updown.io uptime checks, downtimes, response metrics and status pages, and create checks.",
      "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/updown-io",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://updown-io.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/updown-io",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "updown.io MCP by usefulapi",
      "version": "1.36.5",
      "websiteUrl": "https://usefulapi.io/updown-io/"
    }
  },
  "source": "mcp_registry",
  "summary": "Check updown.io uptime checks, downtimes, response metrics and status pages, and create checks."
}

What the leaf hashes

{"body":"b6f43ff3e741b392b5480186403fa1f8fc042a322894dce6bc10fbae4b904704","id":3987236,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794090328795276,"prev":3958452,"subject":"mcp_registry:io.usefulapi/updown-io","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-11-07 (195826 rows).

1. 0x5170ee160e21593f3645561499e4b908cf07709fa41186fd80609047ff83ea48
2. 0xec44fc5f3bf69467611e3a7023ead95ebc5476df8588030be89ace0702eb5313
3. 0x9a0a2106691fdb5223917beb98f75f7ac3ea6a5fee974805eb2026d0252b6c5c
4. 0xc0403c31af7a9164727913274f3e6dbc428ecc7beaf1eaddb20730b8907206f8
5. 0xb4ef9eb52888e207b7acf8ae0b301e3685d2d0a2bdd297b6f1020c2d18d2ae5c
6. 0xf3e0ec955a627bf11b58d6527d36a0a59481970a6a7f8ea1afeaa583d9d0a635
7. 0xc22d3f4ceadf211b45ef0e5b8f2f9e7a3453349c97aa8ec17a3e9bc0d1109b4c
8. 0x81f6a5a723986c970defe98d566e8eb45b0f556b01fe2e6d4e1348a786c82f99
9. 0xcd39a63556d62d8809e0b4a07aa793557eba619e3ed2eca794c9ce85b5fa39ed
10. 0x1965a748328bac8f114b4c111ddbdd4455bf74024e7dd9f28cb956d214dfd7dd
11. 0x8227afc251b839c63f77d3946406e6ee61001f9e42a53844d7982c89360c6762
12. 0xc9c30027da6a1f08b5b880f5e0e6b8705017580d111e182bf33863e42bb0dfbb
13. 0xc4120aeb12547f09661af6703e81437a23bd38ba065b3075f70bd20e35771d53
14. 0xd65824e287abd80d02260ba918668ef1c4c1d016243891677bfc31ebb1eb16e7
15. 0x1440bd4864ece4f3cb1a2fc48e88ddbd78cefd359ae16ceeb69a13e36b55021a
16. 0xf0a56561418cd0342a328707933cc222d8fa725efff7ffd081e0226ee8c46c0b
17. 0x54292a94f447f1fd33c01b5c99da465043f11022958626a2ea562c457fef697a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa