Evidence row 1005603

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": "2026-10-29T07:45:30.727971Z",
        "status": "active",
        "statusChangedAt": "2026-10-29T07:45:30.727971Z",
        "updatedAt": "2026-10-29T07:45:30.727971Z"
      }
    },
    "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": "1.28.0",
      "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":"853e467094d7a66d72cd3fca9e9e0aab8ee4ee327a0e31f959acd8fd39861e9e","id":1005603,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793261581273655,"prev":801004,"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 2026-10-29 (242798 rows).

1. 0x033b4704f16f65ba87a1ff8baea5a8fe60a10cf1a801a25bcbd81224cc669206
2. 0x03c418d9c9dc54533d39cf89d95202df61348614d28465fe93927be3ae936c55
3. 0x9d6fe17b8088bef6a162c519c22fecb167273fcfa5dd4e8c0f9673a9550ea4b8
4. 0x112a968d21a0adc3536abc43fdcaf5eed81aa1f262700aee1e4fe9248dbdba06
5. 0x92d1855a47f367971e35b41b92d7010661f20e2ac5e6382bc6f4fc444fe6fe33
6. 0xe450ee4463bed99d4fed9b0b09b2a3ace5747a8f5a233a06d766f7e9ce317d36
7. 0x8ca80cf4840ed15ff33459a9d1c34c3842005c80cb36348303852900f6740538
8. 0x63fdc36cca9f68da3309e8f41faead6f357f0d337e062c25cab829656b0efcb7
9. 0xf96093a4925e1d3029869f20844dc6bd3ac4b51c5d9c90dbc56d3d5953a156b3
10. 0xcb67c0af691b96815e59065bd320b5411eb01bb2c706fb2cfc678b3c4e91b443
11. 0x278f93338bbb3c2f8bce7c5286aee67e3a881cb1fed005ad96f44f4c843d1b22
12. 0x972302c3c856beb9aef759ec688a36820a18e662cda86d749e333afc5a931060
13. 0x7053e3ab64151de697839645aafd596f413959d0f717ebc500f3fb5da9da55b9
14. 0x7806c5d294aa520a3cdaf5e1d58181e6315b37856d332d91c3a1e53dff27254d
15. 0x0507b989510de89f78184f7a10d971f7670a579c54df7d291a2d72f034ae74d3
16. 0xa0a7723889a4c15b3e0bec353fa8dbcaec6c71cf35bb6c346415ad3e664df6a6
17. 0xd76435ead496863d8b0bfab3434f54cd11da3c49d104fc4064b9cb3381567bbd
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1