Evidence row 1541612

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": "2026-10-31T21:44:21.45377Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T21:44:21.45377Z",
        "updatedAt": "2026-10-31T21:44:21.45377Z"
      }
    },
    "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": "1.33.0",
      "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":"4d4e3ff7280504e4cb3e5d171e7f994fd775103fb2f702cf922a68cef1655139","id":1541612,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793485024772359,"prev":1538200,"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 2026-10-31 (246033 rows).

1. 0x91066f4ab5f3078674b77780e0423af082c18bb00e7d365a8caa27036db8e291
2. 0xd434fc981928bdb243f0b51172e82a0c3c5136ae547b31a802670c176cdbdf00
3. 0x1c961d4fbf9d143a396ee6d9176ed18c3529fc934cfd8598ebfdd47658e5ce4c
4. 0x07cd233bf982c4305cb93978bfdf57fa4d3ebe77ce1fbbf1aced3042cd967fec
5. 0xf301d99c0091d5623611acaf5ea5b734a9bab54f8cbd88fb5939455a90668833
6. 0xc701455e5f1d6e5634b66e7beccdb3584e86795ec6203dab561153b43f136661
7. 0x9f2fb891d03302980cd83a73f5df119ac74a3aea0e0a5873a2ed5a7e75de4299
8. 0xf877bb59c187dda56e35b0b568d62dd566216a9f96192f074ab19211852c968b
9. 0x444d6486ccfe19d44f2e5de87ec1465eb8037a8451f0aa9efa3a2f768bdfd462
10. 0x9b81ea7563df671e304c5c97d1e3a0664c3add22bfe056377f538fda08ca7cee
11. 0x2a7d242a292260f3be345ffd35911d65de64d07e77e809d8aed77bad6ce221dd
12. 0x00b55142778c2749a063cf357330e2ddd510866e60fb9d39bda15086289b1e9d
13. 0x0b96c0f13719918b931247158322b454f759d79392d95e46336e8f97f2324aa6
14. 0x4703be8cc879d73c92037a4dad5a432848a2483b2cd09dba8d5baecb22a1919b
15. 0x91bc1c2b25f148b9b56bf377304983d0f2e68d0d8c3f65c9aaa8adb083331d11
16. 0x8605635b6c6bd33c6547585212170cc076018c2dd5f81f35a5ac4ade689fbb12
17. 0x50003b3c3045b653f8be4232e95e80582cf5c54c14c509ba0a9a197b9e5005cb
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0