Evidence row 1228403

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": "2026-10-30T05:48:37.460941Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T05:48:37.460941Z",
        "updatedAt": "2026-10-30T05:48:37.460941Z"
      }
    },
    "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": "0.19.1"
        }
      ],
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.groundmail.dev/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/Groundmail/groundmail-mcp"
      },
      "title": "Groundmail",
      "version": "0.19.1",
      "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":"ce95fb448f4bdb9c86dac6bd538da41e3b664e6d13473010f84fe47ca6d8750b","id":1228403,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793340894062879,"prev":1227156,"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. 0xb31fd6fef59e1cb54ea2208b277b20dfb4050b196e82aacd5458430fe21cfaae
2. 0x0a1d021bcda6fe6809e63c154fb46d979860a0c4a707c51cee46e2235e4f5d91
3. 0x7bb23643f15de3dbacc12dd0cbbfb04682169261780d02dece4863b05936b743
4. 0xb190a051018c9114c468456484e127f15a065dcbb6197a6ab24950ba19e824d8
5. 0xca24469fee886946ae3ee229b89f0304ff4bded1578da273303f277d47f6edab
6. 0x5030ff39ebdcf9c86c833f307cf375dc9c1eb958149c73f8585f9820349526af
7. 0x5fe8e05d815e2e7871758974a51d4cadc48c9d6d4242b70837ca6ebc4a1d0521
8. 0xa5862f76efc32a910a10c7ee7bb1d68979ddcfc0d98e1265346cf75b6b721626
9. 0xc96aa9666372b0b63cd7a696d1e899f601153e89d1af72d955629da1d7ea4fdb
10. 0x69576613f7b74f249cc8304ec427706c6aa2f7dc862352e570d5c461fab6dab4
11. 0x0d11d63d3959474633554f523a86cca0daf431692407491a97cf1e22f13fcd4e
12. 0x4fccc542268f83b50a8225aef38b6d5a288a9225c50ba8862f1d909b28a1a6d0
13. 0x6d3f5dcc69c62fa01ce1c449d5b1e64f9183cf6457008284fb115d3a05c4b11f
14. 0x4943cf5368ac3124a50a8845e933556cda4f3f7ee527441ef6351afbceee79d8
15. 0xa0b1f6bc1eecfaf70581673c1a7f638b96d1769a5c578c460337f7db0dbe963e
16. 0x0c59b8770d2782eb535aefbb9b2f6810bab4757f51b37e00f5147713a1de9481
17. 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
18. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861