Evidence row 801004

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": "2026-10-28T20:04:53.447292Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T20:04:53.447292Z",
        "updatedAt": "2026-10-28T20:04:53.447292Z"
      }
    },
    "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": "1.27.0",
      "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":"88ab230b242bea713207fa4dae03116bc698a641c64cacd3939038fc2f46b46d","id":801004,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793218353245023,"prev":795984,"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 2026-10-28 (231336 rows).

1. 0x34cf8284588b3d83c937fc7983f14b8eb7587a582b5451dbd0b3e4cf182e2550
2. 0x2981a4f2b852e276921796a5bc3b0fbd715f25a2407c58497cb66c7adb2c2db1
3. 0x23356d379b24e3050ce843d5a793eab7dbfd0f4620f4e4d3f51f20fb12367396
4. 0xc05f32d1403ea7d51dbb02845738bd228631a57706b180ad5b1091e283411e17
5. 0x7db0f1fca4da65f823968823560c5ab73b82650ec44d7bd21ab059d587135e4e
6. 0x6449ce6245335c72e7f3d394f02d767db1a67019bb00392bfb52530183d4a68e
7. 0x88e68333d75cd01022853ec3367942938719226e4a41cf6d10cf6970e7c0c699
8. 0xadba07b8046012ac8a82103d006553df137228f1c7682e70d272fb32fe58e60b
9. 0xeac03c1146a95003c562af6ad13b4a27e00bf3194d2d2f6c950631c020e8d714
10. 0x90c9369b827cee42a2657cd28919e22d4e890a5d8a5068e6e262e0cab74995d6
11. 0xd51e9db45253cbec56eb7c60a0a9450b0baaed8d38d8991895013b195f0471ae
12. 0x7507b360b17505c4197fb7d72731d075fed685fd145a0763f8fcad3207ed9a25
13. 0x3d9df6153e051ebcdc2683b4402faae304acff7f1f03a085bddf9ad34187f068
14. 0xa96695bb231e3cabeb4f03cab216cc6730b71e2304bf5be1e6c0447ea577aae6
15. 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae