Evidence row 1257866

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": "2026-10-30T15:15:57.738052Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T15:15:57.738052Z",
        "updatedAt": "2026-10-30T15:15:57.738052Z"
      }
    },
    "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": "1.29.2",
      "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":"1d86c6030704ecbde80a3b5ec21e7750f7d6a1875584152bbd28c6f8d0e2aebd","id":1257866,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793376931172085,"prev":1249880,"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. 0xfe54bdfb4751a0bc3bafc37dd19b9d94f380d7a8c1704d8d2eb02afadc711d05
2. 0x46d66ba29e77d325b440f1ff9542710a7a675dfde18bfe4599bf88e88e3845f4
3. 0xd7f3d9c93aa77c5c83f06dd51c03e632824ae22e97427a6d85ba49ef8d9b3124
4. 0xf8e51979d836883d745ad4fec31a1fe3c2a922d0892f322987a3352355eaf3eb
5. 0xc2314d51091d612f2f2bbd479086ff65e1b5d2b78741ea54007a09418294b744
6. 0x8f492ca19cb5429de2018651732864bb39b63a4f560bc51426c9a65cfe4c9e0b
7. 0x81d29decff7ffb1fffe75a80074ad47bd8ef29849076cdbd1d2d4314a3871e50
8. 0x1a30b0f663aac6697917510f7e81b916b5b960a25acb0a707bccb63300857557
9. 0x1550daec229b683a01cd5fbf9071f0fa73569c3fe94fb01b7393c13f6e6dab52
10. 0x757c6814fa7432e6c21509d4aa46315f5d71f54717921134f2c9a592396c3d2d
11. 0xc95b51f6d1ff81f347528d7e9741cdee03e2e04a7d0bf5e8abfacf463870ffaf
12. 0x46187d2b159bfccec3c24ebc2f1e41e82133e3b171e192c1282c5434fa6d11d0
13. 0x79594d72fb70613c6a2b4c1ecd92ae15b13d4b81445a6a934b9b245d994a0bef
14. 0x030ea611a04a437f2c80577f6ab0971a98e22d40a72366c4d176ac9c95399553
15. 0x70547116135ca2b169483009739d1d461bcb7d178c352479612fae712aca3f88
16. 0x71e74c274b23c9047354edb6dcd2c654415e3986b8bd875dae992996ea12e22b
17. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861