Evidence row 56732

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://nppes-npi-registry.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/nppes-npi-registry/"
    ]
  ],
  "name": "NPPES NPI Registry MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-25T22:35:04.61379Z",
        "status": "active",
        "statusChangedAt": "2026-10-25T22:35:04.61379Z",
        "updatedAt": "2026-10-25T22:35:04.61379Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Look up US healthcare providers and organisations by NPI.",
      "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/nppes-npi-registry",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://nppes-npi-registry.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/nppes-npi-registry",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "NPPES NPI Registry MCP by usefulapi",
      "version": "1.24.0",
      "websiteUrl": "https://usefulapi.io/nppes-npi-registry/"
    }
  },
  "source": "mcp_registry",
  "summary": "Look up US healthcare providers and organisations by NPI."
}

What the leaf hashes

{"body":"25a1a6241b4bcea9a38d37871e9b644d3dd38078216418eb89a38e1155b0cc2d","id":56732,"kind":"listing","method":"baseline/1","observed_us":1793025440347090,"prev":null,"subject":"mcp_registry:io.usefulapi/nppes-npi-registry","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-26 (296695 rows).

1. 0xef7227ed8917f984ec5d3e2be07780700e1edd910ca79369cdda6fe671d95151
2. 0xddef7e8b941e6645c212a05063d1e41112baa673b49430c589e06256da585944
3. 0x7bdeaabdbc6b3d35c7b189913526e563e21a372bb63b98c69e0902ea640be0c9
4. 0xb7cdc741fc14bd90fd9d05e8acd79f2c823626c78a283ac320196bbf56e6fe8d
5. 0xa3c35af5f0197b9f775dd635bf8305a965c7842e9d38bf50306b2cc5c2696551
6. 0x611038ab84ae530875a2659510ff970ca799f75490418e67e5fde87728da37d3
7. 0xfdf3475003f2ab1a2e1d3782510d537dc5dd664e11a7fedf18d9fc85e4bf0e8c
8. 0x9cebcee453d0c34046c9354d4e4108340469dbce1fc163aaec69c754a018c7b8
9. 0x4079d79418de24ad0e2e3115116c66b738df060f283fbce8f65c511e8293682b
10. 0x561cc4451e40804fde77fce39392adfcb80c38ec84eb38d744520de2446c6e57
11. 0xd1f02e907670bf2f4c72056210a7d4ee252934850293a927f852acd3952f44a4
12. 0xb0cc0b4ce5a68e83d3e3e55b0387f828adf6f5eb6cfa666d75f6e16ed9d89c1f
13. 0x746e9e5b6765727b6b96f41204cc115b0302259f6c67be0cf0efbf245601d500
14. 0x614d844c9e0509d9f9e63697aa2935555bce5f13695a8dc0047aa9e9898d70b3
15. 0x95657a7d540ed6cac0bde9995782333b2562a9a6641853269ac95148827410f0
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae