Evidence row 54151

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://backworkhealth.com/mcp"
    ],
    [
      "web",
      "https://backworkhealth.com/"
    ]
  ],
  "name": "Backwork",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-11T03:16:19.378053Z",
        "status": "active",
        "statusChangedAt": "2026-10-11T03:16:19.378053Z",
        "updatedAt": "2026-10-11T03:16:19.378053Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Medicare and commercial payer policies, prior auth, claim risk, and medical codes from Backwork.",
      "name": "io.github.tylergibbs1/backwork-mcp",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Backwork API key (bwk_live_...). The hosted remote uses OAuth instead and needs no key.",
              "isRequired": true,
              "isSecret": true,
              "name": "BACKWORK_API_KEY"
            },
            {
              "description": "Override the Backwork API base URL. Defaults to https://backworkhealth.com/api/v1.",
              "name": "BACKWORK_API_BASE"
            }
          ],
          "identifier": "@backwork/mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "2.1.6"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://backworkhealth.com/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/tylergibbs1/backwork-mcp"
      },
      "title": "Backwork",
      "version": "2.1.6",
      "websiteUrl": "https://backworkhealth.com"
    }
  },
  "source": "mcp_registry",
  "summary": "Medicare and commercial payer policies, prior auth, claim risk, and medical codes from Backwork."
}

What the leaf hashes

{"body":"7e9453b7ec3cb8272503a986892981a95b433f2490ada9bf148729a987fceead","id":54151,"kind":"listing","method":"baseline/1","observed_us":1793025424951294,"prev":null,"subject":"mcp_registry:io.github.tylergibbs1/backwork-mcp","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. 0x33fd018b24415bedfc04f7aa900a568afe07f5ad3a5ac35a289543cc354a9eb2
2. 0xf8924847b754541314776775abcbd378d60a08c3848648c43957e07543d0c8c3
3. 0x5406dab6b9f3e6a5fb6b355d00f84ad064de58ceb0edffe43f7fa75fc834fdfa
4. 0x232eab67087a9413fc0221237b62aeea2a8c2b6f836677288c6364cd9667d343
5. 0xfd93058a2d93017129a8d01274cdcf9c7061273a0e0425afc8903c7930288a2f
6. 0x6d7a5cb48012e4cb5b4cd9791a296a941bf13ae0997091e686b1ddf2cf0555a6
7. 0xd165c36ae24a7d2d66e8a1641d85a89b05b365a2124edf8d49980d77243e2762
8. 0x0b68bd3b37c2077b0e1bd8547053a400b9477294857e484264805b5d5d5b24da
9. 0xb0cb876c305275438f5625256195a4633b377ef42d92a57edc6f5fdd90665e5a
10. 0x177012e4764007ed1fc9fe062981493cb1e87dce78b4d705154fc6b59f179dc8
11. 0x25f1494b636c5e3c47bd014c16b8f4b5df5a8fb62efdc32979420416a8736679
12. 0xe57be1a98d96d75db9e9d2122794eabebfd735dea66e9d16ca63347243b3d483
13. 0x08de74b7fb265ddb83e4c673da8a94e5f71829b2e6e7464c71c5138e450f2217
14. 0x4338355a835617a26aa0bfcc971e84eb030d84e2aa840e3c8af958921dd080c7
15. 0x610738e0c43687aded83c613c73de8b5226c73c375858a167436461c522ea213
16. 0x06d71bfa7d8b41d62c8836efc2c601e1cc3772d9453596b2ae4950887f3310ca
17. 0x8c756542e482157df0c36464d75c937b845e4423dbbcfad08f0cf8d5a16b9a13
18. 0x20704208aa6923d6b2450ef74ede87a6e0265d46447926038fe9506e9e154b2d
19. 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae