Evidence row 1227156

What was observed

{
  "endpoints": [
    [
      "web",
      "https://docs.groundmail.dev/ai/mcp"
    ],
    [
      "mcp",
      "https://mcp.groundmail.dev/mcp"
    ]
  ],
  "name": "Groundmail",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T03:56:08.631294Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T03:56:08.631294Z",
        "updatedAt": "2026-10-30T03:56:08.631294Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Send transactional email and manage domains, templates, webhooks and suppressions with Groundmail.",
      "name": "io.github.Groundmail/groundmail",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "Groundmail API key (starts with gm_). Create one at https://app.groundmail.dev/api-keys",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "GROUNDMAIL_API_KEY"
            },
            {
              "description": "Optional API base URL override (default https://api.groundmail.dev)",
              "format": "string",
              "name": "GROUNDMAIL_API_URL"
            }
          ],
          "identifier": "groundmail-mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.19.0"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.groundmail.dev/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/Groundmail/groundmail-mcp"
      },
      "title": "Groundmail",
      "version": "0.19.0",
      "websiteUrl": "https://docs.groundmail.dev/ai/mcp"
    }
  },
  "source": "mcp_registry",
  "summary": "Send transactional email and manage domains, templates, webhooks and suppressions with Groundmail."
}

What the leaf hashes

{"body":"f956970408c82e46703b2dee2b3e0b9a78482baced1407b1d5a9f7c7455325ec","id":1227156,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793333692324399,"prev":1225270,"subject":"mcp_registry:io.github.Groundmail/groundmail","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. 0x5f16281f489198cd5455148ae79280da7b6ddeba663bf6c430a06ce92f46fbba
2. 0x96e872f9b81515b1f94672dc3afbeef0ec29b03c81a555d53a2d91c50c206474
3. 0x6d7b1b562e48f05401452fa779b1255cb6e3808ae3bee44ec9190662f6b3144f
4. 0x2b152cd1dec2ed6fb8460962351caa3a3152d3755f91cad21ca3c4a9756ddfc9
5. 0x759454875ff2d42b74b47b6115ca9f30bac84899b6c22f7cad6e46c3853fb025
6. 0x67aab1b3ddaa92d17b5dc83e9cd5a2f04f28fd9f3796928c002c37fe186c2d90
7. 0x7951adf98174adf39f582bf5a6877c27c70fcc8a4734dde2ca6627e909206596
8. 0x9409994a2b5a3aa47b2aa0772769dd7f2737ba69d0ece2db37f14331c6be7c57
9. 0x53375668c2ddc90325cb9884c8fba2fbabdba35ffe226d53ddbe50f2894b51f9
10. 0x5e5a5ab0fe414c90ed54ed19558345d9523337518bba714f9c97ce2e8dc4f48b
11. 0x0937a4b35cf4f92a1eec6d511e4b67c720fd0d7a85144e1e3e3b574a7f95e4f3
12. 0xf367c0b1df2ffc15b764b5ad0caaf07526aeec73d9b9a4fd7bcc5de033506aee
13. 0x7ae0971906d125dd6b90b4b23f9b0f031568e95c77c8aba07223b5ef3ee3e226
14. 0x863694f188c4b3bb5062c468823f130a2c1762c9b6bf2ce9a68fd27f465427d0
15. 0x7ecc532de10b728de98de2eb2a81fbd8da2254ff32b38b6ffde14af9964fc470
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861