Evidence row 56880

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": "2026-10-25T22:35:09.724587Z",
        "status": "active",
        "statusChangedAt": "2026-10-25T22:35:09.724587Z",
        "updatedAt": "2026-10-25T22:35:09.724587Z"
      }
    },
    "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": "1.24.0",
      "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":"30b219d1909d15aec655e837840b7a5a0a34b4bcfc2e4d3dff39fdc82a549c2a","id":56880,"kind":"listing","method":"baseline/1","observed_us":1793025440911838,"prev":null,"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 2026-10-26 (296695 rows).

1. 0xc67ff15dae69090ed0aa82a7a72b7ca7ead02b06aa369d019fd5de00941d08c2
2. 0xb4832a8caa9fffc1dd658514c3c2fc1d489f6c2dc641c2a6a90b892aab33af53
3. 0x85a5aa9ccd9bb18cb5108c6f8797aa5ead4a6645dfcc4aa1ae824aca89d0a1af
4. 0xde4e22d1d32cfaada4bde8c7e45262b1e2fb8d57dfb7e2e6754b5692e12e6b59
5. 0xd177aace1fdeb742e8895f53809563151313e43dd84b9385be88bd4b8082adbf
6. 0xa7e3c9bd3f1b81a0e43e6ac3ec195c6e237e1b21d6852f36b334c078ee21f6ae
7. 0x10ac1899793b52c22e5f208b216023d8c3f38efeb2e0dfb47f72065747ca5839
8. 0xe85ed350c0053b4ff5a58d369a878819589de5b1648588d8165b75830f030c06
9. 0x1b9dbe5112588a7f2b1b0ed2aa9b71047b77a5b91bfb1e88df305d0873594c3c
10. 0xa5d93de518cc5a3e0fcb59e9d61337c743409d708b23c5352bebbbec973ca249
11. 0xcf79908a8c2a5f4d274583b3f75e7aa2d8b29ffc384541425852fe761ae31d56
12. 0x9d99c5dad23613921cdfabc849c2dd3c97729992eaa05c4dab5e86e83ed6d220
13. 0x72e35aac89ebca631656c2b1aecbdc094807d9807f12c22a6ddf35cc1f5e21d6
14. 0x5b20d8aab05225a3497eadcce89d2e2a586a510fb31334793d3f46f88f0157c5
15. 0xe94ca5b798e9899ad611e57835af42266e20f53f44977e487d81365e30972beb
16. 0x703f95866af09c5e5d6ead7411e9a10f964a41a2aff64d4a55ff0053c023a023
17. 0xd0651cb9bc8155eb52b5247d506e74b8a935057dc190ba52091702ac25ed3a40
18. 0x9a9024edb5069d88a324facb310a5ce8e495214bbaa968f077bede437390194f
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae