Evidence row 1538200

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": "2026-10-31T20:56:45.305167Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T20:56:45.305167Z",
        "updatedAt": "2026-10-31T20:56:45.305167Z"
      }
    },
    "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": "1.32.0",
      "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":"a4237d2092118a9f7412b4d014f97323ddb35410034067c4531e1d85d6756d3a","id":1538200,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793481419708848,"prev":1500470,"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. 0x14dc71734bbeff4494ea6b09cab6b985a5137f3fc9c9eb686d54ed73aa817b65
2. 0x678b18bcda288c95032e390e469e0d54dcb36b82f4caecf44b59283866c930d5
3. 0xe6b1e6dfc80d3cdfef77cc4647ba3c00e6c9bcdcf55a73286ba103add2d7d2a1
4. 0xf4c2525146e9c3083d156e5288b23c2ede6dd265bc47164378f7831d362a5ce8
5. 0x105d9ef9f63e904ef1f34783d85b316cfc14d8bad0ff670c996a08e35b4f14ae
6. 0xf370449e7af7f15edf706af07c9c011ee2ce6a4b400481d6e16d5335eb4c22e8
7. 0x64a4f8aa587d14a90020f0fcdcaf566df61c1ea81992ab07ed839925ac7e8fe4
8. 0x0e3386901bc9b6548b7f9c100d10d8aaa0fc5dcc826e5c64c35f1d59a0700625
9. 0xd30209cbe43b62b437bd223b2454130b5a475d73746a9bd940b8e34eb3cf8b17
10. 0xc21c039a85662b046b10486308f45fe490ee5d28300a8fbded61a10649304604
11. 0x83089b2f1e6a092c7c72a41304ef418058e8ba571e05e233a1a8fdfab934cf9f
12. 0xda136ada4a2f6b271a96ac38822fb0e8491f6d58179c5b77280c01de32a2418b
13. 0xf2b49afd37f6c7a074cb7e2e9bd6248a3e1bcb90308acf1af6b3be8a3c1b7cfe
14. 0x500efd0d65e793a02397af46769412226d4deefe24ac497b68f3a32f6828638e
15. 0x95ec49fc7f2c7be30422eaa1d0d6036836dd63ff46a8ed4027258fcf3eb8cf24
16. 0x2bca4aa3c59fe9209016c64bd8b706423477e3407201a00165afde9abf6fee2b
17. 0x37f13582abb3c002d51c2f190c312129cbc3a39754618fee2c75c2441bb1eb94
18. 0x59f83f7228f07febe2780660e422e171b0359b8aa031ee3be07e991118130c15

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0