Evidence row 2130642

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": "2026-11-02T11:22:37.53142Z",
        "status": "active",
        "statusChangedAt": "2026-11-02T11:22:37.53142Z",
        "updatedAt": "2026-11-02T11:22:37.53142Z"
      }
    },
    "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": "1.34.0",
      "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":"66c5799d211f2c3d9fa0c2a10253b80a1838cb89b08e1a9292c89165e023ffde","id":2130642,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793621912736895,"prev":1541612,"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 2026-11-02 (444186 rows).

1. 0x52f015c5f8399586228f264e74509c4d2f685a880584aeb9c8c1d2aee421ed88
2. 0x41f78772b99fe8f89c9f12420813d544f6cee94d7ac9317f84a1b53b179e4bb6
3. 0xefb4482720590d81dc965ead6b1927b27b521625b3229e23325c3716e2f375f5
4. 0x8a9bfe1ae8f2664c18db4ccb34dec27ab1f02e3f1dece2e2771f6f14d0cf8c10
5. 0xbdad395c7e4383f51dbd35c32ce0b6b1e36d1ad3376027d9c4b9ef32ed6530e1
6. 0xa30b440769868361fb166f677ab99027dbc802cc3ff5b5c59f381287cda2583c
7. 0xcc71b96f5af01875d9f0f3fe6ffdf5f35d7f028f1784f7ad3531f154250d0ba5
8. 0x03edce1d47bb8ca7d5c9638f4d364edb42d0dbf9b70e2ff221ac059f01ffb55c
9. 0x83f6e96c3323715c91c0a43f90d8c2fe3f01ac6aa0275049293526780dc738e4
10. 0x2d9cd715206f30b83a7d5714962d9a4bdf3766e91eb879b8a125d3902a4c6f1c
11. 0xf3842ec1d284b8dd3e855c5753327f72acb17d14a34c74476e1548a808165dcc
12. 0x72adf61d2802939b48d74a549823053f636277c76140db963cda7bbd192a3539
13. 0x1af6bd9d49aa04d9f41d673388facaaa9e6daacb0aa9aad0dcf31353556f6ee6
14. 0xa96ecfe7ab9f1788120ca262a1b69b7b258160df41b4041d36fcd211c95d26d9
15. 0x67c99d356de30f9cfab88af48fbaa18909ef230dd09947e84da060bc03aca929
16. 0x1068659ec8f2bcf26e4ad39786557a8c45d60e5ebba4fce2fb9962b2c9c59920
17. 0xf9973981f80219d4f00fa9186b40a8144accc0c9875572fb79eaea312a21a187
18. 0x4d205063c881c48edbbb37762a8d3bbb7444d4c42daa882f663a231893d25c35
19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e

Day root

0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1

Chained

0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2

Published

On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af