Evidence row 2726846

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": "2026-11-03T22:29:21.308598Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T22:29:21.308598Z",
        "updatedAt": "2026-11-03T22:29:21.308598Z"
      }
    },
    "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": "1.35.1",
      "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":"51477bf3814c4e38244efd8a1e4323c823d6c85f72f032767042eadf119486de","id":2726846,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793747995181642,"prev":2564992,"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 2026-11-03 (425475 rows).

1. 0x3411a105176dbf0c577a8282ee5b66b793cd75713ae3f8a0475c9fe40961a6ef
2. 0x713d9d8054ad66922e60329595399b7b944ad3d8f63fe6e12c98c00053904d35
3. 0xe69756560eb1b185951bf6f66eb9f50eae5f0658e12998d65ef806ab6ce7f0fe
4. 0xe469f7fafacf2228aa3ccd6caea02d2622b943a228fe667fb1656d0f94e8c0e6
5. 0xcf14b81e1d2995018e43f03f360a8b88671f475a5412f4680f7afc4119824a94
6. 0xd94019a94809fb009b9ea8c23dd3f0313532032383e84f959943e3f609009c57
7. 0xf6b175e08784d898172cd5a7abe2266422901096cc735afc167b8b1ddea5f9c9
8. 0x08dbf787dd5ed22f70b1c73b4ef2f4a7b8a771037dcbee3d85d81800adb2fd05
9. 0xf23966b4587750652ccc65e2f8f1326cc687b4dcea6224259fe7e5106c29cbad
10. 0x49f25cd5cf2deea258bc0c8411cdbd7457371dd174c887bfb9a2f9bf066b0c23
11. 0xbe5357f9cf2063fcaba76741ac98b6cc09b746a0e2aff0d2a2c40a27406ccf12
12. 0xcfd9446c90f7bb6597850caf8f11253e5ca7e0cdd95d04137a924f1c4ecddcfc
13. 0x013a4e21b3841f82a4251c6d3dbec726e8806f20823e735f7a5fb54b861e55a6
14. 0xe2bf4675db929800e127e8a752f51484d14d8f7a9d806273bdc68a1dfd125e44
15. 0xb1fe1f6398b7faed977bc6cc75b0a8404ef5a6cb386ca30aebdb7450b7bb6dbe
16. 0xb1804d44f1a591de3b8b8db8fe72e8ab6695e6d154862ee8ea77b6ac2b43b67d
17. 0x87df2ed9052c264d606c076742aa7e54b69fc8344b21e972ebcb19d020b7ecf3
18. 0x012ad914f3f945da3b6b48eddc7a1388613e4afc04339deb76c609611864e9b9
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7