Evidence row 1828751

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": "2026-11-01T21:04:23.493555Z",
        "status": "active",
        "statusChangedAt": "2026-11-01T21:04:23.493555Z",
        "updatedAt": "2026-11-01T21:04:23.493555Z"
      }
    },
    "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": "0.2.2"
        }
      ],
      "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": "0.2.2",
      "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":"214703f03168588a7837feb715edd91330fe020aedb4285462fd86cfc9753424","id":1828751,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793567868284712,"prev":1225311,"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 2026-11-01 (302406 rows).

1. 0xfebc80f10427f319fb971d86cb92643f3d058510835419b7f65caba04baa7661
2. 0x48da7f830090f8cf4fe11e2821cbf5998395e9a64deb7b27eac2c80244a70a9f
3. 0xe83fc3cb6d3d899ae9176a243fc1f4a935152c693736dad008a05de0c5b41022
4. 0xd6f444d23590fb8a5d6e0eb371b643c41cce0636d1752c69c04eee57d604eb9f
5. 0x43207b089a4e3849589f066213b6c93fcc4ce98404f20ceeec48be76494ccf0f
6. 0x72c2bf7dd06dac71b493dec577a69b89022f0c8fd88a2d3fbfaab0e3e54ca5eb
7. 0x22e55fa85a8cb36fbbaa3c9fcf39a2b36953ac0dc8db606a34922af5faeed28f
8. 0x75b7839f1258609c8fa0e6bdda609c39e42d73187f74b7e8415f09b9eaa4c737
9. 0x4664dea642671b48bfdd742cb12facba223aaaceef68e0ceddeba7975e625295
10. 0x564bca6f173e82154fde42703fb10c739c2073924fb48e5d7b4f3a4b784b03b6
11. 0x427f55fa61b79f8cd2e998cd7af23451515617d28a7e55fbee0bf8cbe2607585
12. 0xf7591c985d9cb23ce20ca955bee97f41fd017c55aeecc11989372ad7a6b425a1
13. 0x904a0ef836cb4b2dd139024d3379cfab31fd3b5798d155735069733eb5c3551b
14. 0x7cd72adb87b8751bf15c5933b0cfda4c062b8aa62aa82c7e8571c6aa0cc82204
15. 0xf7af9137c03da92bdd37d086da37554097bcd1fce016f93f2e66d18b71970c5d

Day root

0x7fa2cba1cf3d6b35630896f5fe1a650adb307ea2c376e80a5f2d9276b7cb5ab3

Chained

0x577ff89ba012beeff3197bcff7fa86752074bdf54205a24359cc437be2a952a4

Published

On Arc Testnet, block 70262758: 0x435bc1b9331471d72e1998f2e420983b5189d4da65ffbd6f27ef40daf5e1ea90