Evidence row 1025540

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://castle.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/castle/"
    ]
  ],
  "name": "Castle MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-29T12:34:10.500651Z",
        "status": "active",
        "statusChangedAt": "2026-10-29T12:34:10.500651Z",
        "updatedAt": "2026-10-29T12:34:10.500651Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Investigate security events and manage the allow/deny lists an analyst acts on.",
      "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/castle",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://castle.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/castle",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "Castle MCP by usefulapi",
      "version": "1.29.0",
      "websiteUrl": "https://usefulapi.io/castle/"
    }
  },
  "source": "mcp_registry",
  "summary": "Investigate security events and manage the allow/deny lists an analyst acts on."
}

What the leaf hashes

{"body":"02d564656a989bf0ed919e027b0e9b5ba1c24c59c4d5c7f4712c947f36b41f05","id":1025540,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793279588897436,"prev":1005225,"subject":"mcp_registry:io.usefulapi/castle","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. 0x4d5aa2f34f671bc3d67a83aec37e1dc5e3f8de158024ea13de24fb0df6d3a3e9
2. 0x309760a73513190906092b8c10c3cc8bec52c85387624a95aadf6540b69995fa
3. 0x8c4f6d68c9f820aa0131825883548ced37e208087bca1c80f36532be4f6a5981
4. 0x5939220cb2de7b42d89972d24a3396ddde4c24764644a31764f2eb512b0feaa6
5. 0x666f9a7e022ba4241d4953d6dbdd4f06381587387bfd3b9943a846d48ddf77c8
6. 0xf9d2c48a2485bc54267a378d273c3544fbec506e440b73535f112d6a5c3ccf2b
7. 0xf63739d385741ab08e30323fa4fc49f2ae079b5096f1cfc0bdcc7c03df2aebad
8. 0xe658721918104302fba52ba47559f51e5ae00cf4c2f80d8a38891fb2c5443770
9. 0x98aae66532270915d8df6bf3631dff3ebc3bc9e4c797d104b690fb7d09266098
10. 0x4c040fa5cd46885dff3742403fd24ce2d3288d2680ec74c60b18570dba573b0a
11. 0xe6ac0d837012f4a37198cc3b492484d0093f2e9ff7108e782a697ad8ed5ea9b3
12. 0x67e9f947056da96126d9e1726e1fb4f2e7e79699a668a04b64a80a2142ffa546
13. 0x631d9e4d32a0770b1547484c1f6ccb27bbc012377527b96eadfe1ed1aad5997e
14. 0xba203712cc4170d9697121c2026471be02b4061fd0831c90d2971031c905f0c1
15. 0x0bc4adb5c11d6f42a54004eb9a86e4a9294c3fb793d78af72f971454ecfe5b44
16. 0x976395aaca1b771b7e37710dee4157412909d2398c44e306a2e1e3fe83b984fd
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1