Evidence row 1249880

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": "2026-10-30T12:20:53.551359Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T12:20:53.551359Z",
        "updatedAt": "2026-10-30T12:20:53.551359Z"
      }
    },
    "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": "1.29.1",
      "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":"0620ba726b3677ac67f1f9599df60c9fbff4ce8af3e7f9b9ad08e7c4437db0c3","id":1249880,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793366123722426,"prev":1025916,"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 2026-10-30 (243099 rows).

1. 0x2b9f5bc08b90df833d97764029b48df48153d7a4155564e619e81354390de378
2. 0x7087862ffed507ecd15cbc664022d42d694b4f03cd468ae92ce120cf25c2982a
3. 0x25a1e7607e7ae1466e4adbc25cde74eadd51bc35aab427b0bab0c1c0422259e5
4. 0x286ec55ef5cbb23a305627ab4bfba8cc7a685b7d8c346bf3e50fe631ca032a32
5. 0x609b8f4b9b1c1355fa8d8d44ffb3666e5898ea18e0f08ef10fda714fb74e805f
6. 0xab00db232966987f2bd2f45b2d66773f865f76cbcb419afa8da0780becc430d8
7. 0x6fc6f1f0f6ae0556e0f5114495adc76868299e8ed79f420f3b1d7928075e6c16
8. 0x6e605a632ba9335f169ad6282c9b1467da9530b34f9758768f4053d9dae059bf
9. 0xed3dcfc4fb2d485195e26442a54a5932d18c08b1cef16bf4c4a90e9ce2b7ddd2
10. 0x4e13386eb1661b85317cd68c43b9d54f6d74ac5f82b97a63b809f09d1619b46e
11. 0x9c8d21f84cc7c9c77dce54af1978d990bba76a3d671aed04180a196e1f719918
12. 0xaf72951917c27614280b44cdb8110490708a025fb918d036df31d7c4af487f9b
13. 0x5b5e717bd9d8c298120f6843230f201682f4ad6accca2c97966539b2c900f6f6
14. 0xc1162ffd606c8e0e72ce94a16332c19bf77c27df8032f71c95d5690246968bbe
15. 0x6222037db785cc797fc8809e52e551d945c928d389b7ac947c037fb9af818562
16. 0x50ca74d7c8f26a46e9c3b8fb5e7f9ebcdfdcc1b7c863db3b6d2b7c12e24ca66f
17. 0xb0c9ef42e725578748f3119c9dbebf2fc437266bda013df29f98ed3ebe621403
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861