addrbookFor publishers
← The evidence ledger

Evidence row 2044800

Observed , by sync.mcp_registry/1.

Kind
listing
About
source_record mcp_registry:app.usefulwork/useful-work
Recorded
Previous row
None: the first of its kind about this subject
Body SHA-256
ba71dc665e321180dd711a99f7c252c794746278354dc707fa356e6ebae84388
Leaf
0x2c1abab373593cf2e7524114070f2d31931f623da0b99f10c45ad47b6a0b4653

What was observed

{
  "endpoints": [
    [
      "web",
      "https://usefulwork.app/builders"
    ],
    [
      "mcp",
      "https://usefulwork.app/mcp"
    ]
  ],
  "name": "Useful Work",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-11-02T02:38:51.69893Z",
        "status": "active",
        "statusChangedAt": "2026-11-02T02:38:51.69893Z",
        "updatedAt": "2026-11-02T02:38:51.69893Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Find and fix mistakes on your live website: wording, broken links, slow pages, certificate, domain.",
      "icons": [
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://usefulwork.app/icon-512.png"
        }
      ],
      "name": "app.usefulwork/useful-work",
      "remotes": [
        {
          "headers": [
            {
              "description": "Bearer followed by your Useful Work API key. Make one at https://usefulwork.app/app?page=connect",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization",
              "value": "Bearer {api_key}",
              "variables": {
                "api_key": {
                  "description": "Your Useful Work API key (uwk_…)",
                  "isRequired": true,
                  "isSecret": true
                }
              }
            }
          ],
          "type": "streamable-http",
          "url": "https://usefulwork.app/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/dav3trad3r/useful-work-mcp"
      },
      "title": "Useful Work",
      "version": "1.0.1",
      "websiteUrl": "https://usefulwork.app/builders#mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Find and fix mistakes on your live website: wording, broken links, slow pages, certificate, domain."
}

What the leaf hashes

{"body":"ba71dc665e321180dd711a99f7c252c794746278354dc707fa356e6ebae84388","id":2044800,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793589494525563,"prev":null,"subject":"mcp_registry:app.usefulwork/useful-work","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (444186 rows).

  1. 0x2c1a42f96cfbb8d8fedb29a62863f8daa52f245239aa48805e8d805d06861b49
  2. 0x104a54b0321d14eb5c6b5e979a0c8a35fc548acc1f2d1ae6ba8f2fb16228ed00
  3. 0x28dc80548bcf20d3c418b4dc51044850328439e188edcb88751be9328b6224fc
  4. 0x007453b1f8b59a38b5397ee37ff1fbd0ba3b845376ca0e89d979ff8b24b82d8d
  5. 0x7c3c08e68784caa8729b70265128a2ac4c00f44ee4ea2f6da004ae20c8c90a1b
  6. 0x175bc3988a59296f29adcf0249c23a763a23fa7043d4de95ae830e24c81dae18
  7. 0x5d971548d612de27c1d49873ce4224a7c14c154aa9c2e6db5408365ce73ce699
  8. 0x1115b489e6ec22e57cfc51169fce79a2b062e642fb098960144dc5b6f7d300d6
  9. 0x1f8daca3ef1c79375fd738b599146d29dcf7a03fd30a40bc2044a149f447f414
  10. 0x0554e71e55f452a6a37fbf72f872a448e4eaff3025337e2d27dd5bb8b21cfebd
  11. 0x2bd69db067e141defea23a9fdb004b1bd6b05d176db7b580c856e30ca4cb1eba
  12. 0xb428466fde94278d2667279c042debfdb8e243ad01fd69fdb5ab640b257ec942
  13. 0xdb8f582c0e06dcc12f31eb42bfcf649e95cea3ce20a525db7917ecfd954357bb
  14. 0x037a66c2ea899586d58b52761f6b950a97cda22bb80294e40013ebea171a684f
  15. 0x9cb76be6423133397c3da69f801d6af35dcce77b458aa17bd796c877ed7bc8fd
  16. 0xd42916b5c6441e9c8d91ff91715af1489cb83dee26d47e7da107caa4d2a68b65
  17. 0xa20b9be86af7d690e040c9060a373b2fc5498edf3432f43c26f74fa2febc1e9a
  18. 0x050f2978b537f7afb21ee1551577cdf146d1c56f4df12d24315ae5e69366b0a4
  19. 0x365b161a4b68d750dcc4b3ecce1154a2163c87b08762079428e68f0ebb6a754e
Day root
0x78fecaabbe319e56f5c4b80fc02e2052e198ad24781da8832a475ff65f2002d1
Chained
0xdc35957db5d1371ca382b9152878ffece28ec7c5cb4f98fd71ddb367f8b999b2
Published
On Arc Testnet, block 70432815: 0x56b814612eb2e3e544153df3e91e1f7199106d1e430c7d8c6b653feeb9ebe9af

How to check it · This row as JSON