Evidence row 2546888

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": "2026-11-03T07:15:39.278334Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T07:15:39.278334Z",
        "updatedAt": "2026-11-03T07:15:39.278334Z"
      }
    },
    "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": "1.34.1",
      "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":"e16f710de6bf15d2f5cc056663861713355648ad47a357cc1472af5d7e77f395","id":2546888,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793690351543228,"prev":2130642,"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. 0xe8c9d5a61a0abc19a2db53e0cd56e021d13622b21c2c639ce41f89d094d5b44b
2. 0x9708321b2c0bccf90507edcf6246b947f609a843e1159c33c8fae9dbdc152ffb
3. 0xe0eb5bf04921a81409ccb4a658560d859a3e4af4c62a0426d15490aedfa4ddbd
4. 0x8043892965a5e4c76c946f629ee6144bd4a107ce390a5fe07bcfde75a9838658
5. 0xe28fb9f90207cc4788e9906cb1f1ad2d7c6c711cae83dcccdd0dce2d614a5997
6. 0xaa4a8d2fb255154231254c057de20b9f3f1543ca12bce6490273fc399ee99080
7. 0xf9845532a55a351d49a49f9487094665f50151fdcb5c5ede4e4f7054e3c5244e
8. 0xc648c9b9e6bcd6a04573a22edb49121e70f2f8d78738af771bc6f99d227de3ab
9. 0x38d99713f532e47a3274c6d701591016e38ab1dd5e4725f7d74276f632137356
10. 0x2c41ae4c8b52b752b7b017a5519ec4410e6df05e55fce8924bfaf03a1de999d7
11. 0x9754ff07fc10a16f252b67506de6264eda22cb20364e0f2d3f70e7b1f7c06d9c
12. 0x792fe2c8b779250d39b315920e8b7c549ec8c259fe9808dd30734ecd84783eaf
13. 0x01c4d391183e6afadf7d572bbc89bc89e153cfbcd7d4220372a49faf006c6f90
14. 0x3772686f2a1eb334138050fbc502de05a788284f1b6d6ecca81bfe0056770df0
15. 0x006ca23845a42a2d7f3ffca485568321f0deef0a65ff45709711a78f8e68aa0f
16. 0x68c6b9053bb76224fd0e15585b411d440e30609e5a4fb17301a7d24e9b177e60
17. 0x7075a090980aecb33e9c15c829cb40f5b44385b6d91a159042263db068126b87
18. 0xac5402954216dc6c7020a6405675c8fc3b0828c2ab02943d80de52677a2f1fc3
19. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7