Evidence row 443006

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": "2026-10-27T08:34:47.624505Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T08:34:47.624505Z",
        "updatedAt": "2026-10-27T08:34:47.624505Z"
      }
    },
    "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": "1.25.0",
      "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":"845fe29b48750c059512fb669eff347fe414e57b7dd1aa270bf53ac142e159f5","id":443006,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793093257119157,"prev":56514,"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 2026-10-27 (273461 rows).

1. 0x11145e4861cbe14e919d86c7c6da373e0f6baed43e5b144f9503fa4c860e7f98
2. 0x6dd50fc1f6c940789faa83f80549903d8484a4dae3e1c0268006717303bb6880
3. 0x7b415ad3f5b41dedd591f52024f00e476aee051f3d143f989b907b46636c3ab9
4. 0x283fe49b1d8c6f4ab4d47acd625145c4cbb7cc9896407e24841f3994d38b081e
5. 0xe8361ef4556150c0230c3dc634a8a48fd2a89c1dbdcafe884f6315e70c1dcfef
6. 0xf7e7b1ce6a07ef4e10d29ca31b7d92922a48ab36345f4e719f07be7580e86b29
7. 0x9fe436dfafe2dbbcec83c9cfe5810fd195e2bddce4ab006afbac0e36f1b9617c
8. 0x3f62534cbc177909426be5aab73016bb2fa93fda05670c17360bfdc27483e68e
9. 0xf21d8e1fd45da615cdb693ce3da90dd6599ef50d1423b9d3011ea6d2d313b152
10. 0x295813ba553f1314ad9c6e9945241a70d67a6cf1b76cbc8bb24024c2da32b553
11. 0x1f45fb42c8950b8677f8b081328341df05c76a2daefeed7f5101116aeb98bd62
12. 0x0d3ea2b5e8eb21cf4cb25a0567ff70340d50d07631267f35ddfc7cd1de74eea5
13. 0xedf6ab3c3733ce137d888d3e5f7006ba77ab04b8f1fe576519f7b056959665ee
14. 0x52c5141da0cbee106a30396ee7d1360fd22f55084aca2ca436c8007892775670
15. 0x6913cb48392acb8dc5c940dcdb6e6fc889d544f85dff11da249551a5f027e688
16. 0x518b93854db03dc9fc938883abf30da6eaae5ae0d4336903968fd32a7df8c71b
17. 0x22c1fb9487ee0b9732fa017a0cc321eb27a60c08450d112f755089796e12cb1c
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4