Evidence row 1225311

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://gateway.pipeworx.io/federal-register/mcp"
    ],
    [
      "web",
      "https://pipeworx.io/packs/federal-register"
    ]
  ],
  "name": "Federal Register",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T01:20:50.13723Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T01:20:50.13723Z",
        "updatedAt": "2026-10-30T01:20:50.13723Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Federal Register MCP — US Federal Register API (free, no auth)",
      "name": "io.github.pipeworx-io/federal-register",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Optional Pipeworx API key. Without it calls are anonymous and capped daily; a free key raises the cap.",
              "isSecret": true,
              "name": "PIPEWORX_API_KEY"
            }
          ],
          "identifier": "@pipeworx/mcp-federal-register",
          "registryType": "npm",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://gateway.pipeworx.io/federal-register/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/pipeworx-io/mcp-federal-register"
      },
      "title": "Federal Register",
      "version": "0.2.1",
      "websiteUrl": "https://pipeworx.io/packs/federal-register"
    }
  },
  "source": "mcp_registry",
  "summary": "Federal Register MCP — US Federal Register API (free, no auth)"
}

What the leaf hashes

{"body":"2b26390541e911fa474f71132187d04aff5b7857a82a0de359147506f65e7715","id":1225311,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793326490224798,"prev":46551,"subject":"mcp_registry:io.github.pipeworx-io/federal-register","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. 0x4386adbfeb6f6f4cdb52d041966b4a4c4acd4012dfd0fa63b2fbd8590b433c6b
2. 0xdb23cb862f5fc6e3f1718a5e1dfc57743465f13c217311dda3b771127cb400ab
3. 0xf5235888301516e6216be34baa04637132326bcb07a0c0a4cd404e35aa22f3ce
4. 0x3d0aecec531369968894b09d0bd181c3ea0b0145758c4952daa5276eb7f5eb6a
5. 0xdfd8b43c8f92508f63942706a231338fbc0bc2f5d46155fb7ecc8f81278ed1e5
6. 0xa57c0db3d4b5a2619fe8914ab627c1406072f68591fa31c8d28a3f5357611996
7. 0xf5577e71c8ced8847daa50c6ba3d11c64a2f527a0c277929e106a67d63242720
8. 0x94a1f1c551e413f423ea8d3f1ff26061be1207fae72ef5d45b45db33db1c40b6
9. 0xfe237d1df26049e62c16fc101854814ca4314ac170e48bb599437e908cb802a7
10. 0x879b5fa5b87a45e54714ddcb2a4cd0fcd159ffc535f24c6885f0f10c37538beb
11. 0xcc7dea1427ef0d8fc02dc26c83b2113f19ccb987b70857c457d612df1ca2cce8
12. 0x181303cca10a7aac486a6ea2c2ddaae70e35f5af40f5d77d273e00c94f930237
13. 0xcc206dc2f9e188db598d4b3a17da47efe415d2946ef4b3a478b5d02f3ddb1474
14. 0x775f1cf1eda93a75a3d05aa8e7b45b258d1de91c21741301b1aa3d048fba588c
15. 0xd7d5c71ec079257a487d0494049c896f97cf8bf7d89a43fea539777c548c96f3
16. 0x50ca74d7c8f26a46e9c3b8fb5e7f9ebcdfdcc1b7c863db3b6d2b7c12e24ca66f
17. 0xb0c9ef42e725578748f3119c9dbebf2fc437266bda013df29f98ed3ebe621403
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861