Evidence row 3958452

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": "2026-11-07T18:03:31.16172Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T18:03:31.16172Z",
        "updatedAt": "2026-11-07T18:03:31.16172Z"
      }
    },
    "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": "1.36.4",
      "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":"30b3516047c2ec1ed2b49666f5850959b874cc5d55f795fa004d98bf4dae91cf","id":3958452,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794075910243212,"prev":3945611,"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. 0xb6cd64823787badaac5e33574d660df1fe17df5c2f69142b9b8d0491c90d66e3
2. 0x21f3d0fbaa279892d17d2eb8a0876458447abfb6a5125f4e98cf85af9dd47951
3. 0x1f224aa09ecf8cd557bb63730bc8b7fae5525a552ee661a72045c6b5aea6acd0
4. 0xf331cfcf8691e4180a9da98642753bc79740d0374bb557277b48940b6b13147a
5. 0x05c276111388274701d4dce278552b5d4602dc144a9c1a92a990976a2cad8747
6. 0x42c09fb0314e0ec23dce356bc13eeee65c4622977f988a8bab96a4ab0e0bdbe1
7. 0x415046189da9f9b83bafab41104206a17d8dba53c9cf5899369033ef7be6dabe
8. 0x7921b278969610883db2af0fb7ea25a6f48c3611f034bfcd5ec1867070db7a67
9. 0x708307a0695f81c00fb4cd25f552c846fbb4096442832297084372ea26ed79d9
10. 0xd3e9d8d614b25a87d0a1a946fb6bf67cc6bfc4dd2f023d1a9417dda0569eaf6d
11. 0x49c0c4390dfbcf0d2d0982a7796385256d7c281a09e3d1c7db01bade17a076c7
12. 0x4bf5ce7834d114514a59b9c89689bbf9b5c705a0a8e935970399516e01533119
13. 0x0d8c5e754523e6e4a876e7fe9341fa7b94a14cd11d7a341b370800104a0ac37d
14. 0x7720754cd1d565acdb28ae2e3c2e759562843c986908d08656bf4c41e785a347
15. 0x2afbeaef1e4de4b2a6d70326e3dc41f9f1c65d4fc46630d217fc932790b0680c
16. 0x3235c8a33ac14441f1a12a6515f670286d48b48fa98eb1dce45d902e053abe01
17. 0x9ea7c2ecc6985da4b761b0f9096b7858b3ac8e3e47717c3840537fb2ff31c6df

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa