Evidence row 1258127

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://api.spacepost.dev/mcp"
    ],
    [
      "web",
      "https://docs.spacepost.dev/tools/mcp/"
    ]
  ],
  "name": "SpacePost",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T16:33:01.255815Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T16:33:01.255815Z",
        "updatedAt": "2026-10-30T16:33:01.255815Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Send email and manage domains, contacts and webhooks on SpacePost, the Resend-compatible email API.",
      "icons": [
        {
          "mimeType": "image/png",
          "sizes": [
            "512x512"
          ],
          "src": "https://spacepost.dev/brand/app-icon-512.png"
        },
        {
          "mimeType": "image/png",
          "sizes": [
            "128x128"
          ],
          "src": "https://spacepost.dev/brand/app-icon-128.png"
        }
      ],
      "name": "dev.spacepost/mcp",
      "packages": [
        {
          "environmentVariables": [
            {
              "description": "SpacePost API key (sp_live_...), created in the SpacePost dashboard under API keys. A sending_access key limits the server to sending.",
              "format": "string",
              "isRequired": true,
              "isSecret": true,
              "name": "SPACEPOST_API_KEY"
            },
            {
              "description": "Set to true to expose only read tools (GET endpoints).",
              "format": "boolean",
              "name": "SPACEPOST_READ_ONLY"
            },
            {
              "description": "Comma-separated API areas to expose, e.g. emails,domains.",
              "format": "string",
              "name": "SPACEPOST_TOOLSETS"
            },
            {
              "description": "Set to sending_access to expose only the tools a sending_access key can call.",
              "format": "string",
              "name": "SPACEPOST_PERMISSION"
            },
            {
              "description": "Default sender, e.g. Acme <hello@acme.com>, used when a send omits from.",
              "format": "string",
              "name": "SPACEPOST_DEFAULT_FROM"
            }
          ],
          "identifier": "@spacepost/mcp",
          "registryBaseUrl": "https://registry.npmjs.org",
          "registryType": "npm",
          "runtimeHint": "npx",
          "transport": {
            "type": "stdio"
          },
          "version": "0.2.1"
        }
      ],
      "remotes": [
        {
          "headers": [
            {
              "description": "SpacePost API key (sp_live_...), created in the SpacePost dashboard under API keys. A sending_access key limits the server to sending.",
              "isRequired": true,
              "isSecret": true,
              "name": "Authorization",
              "value": "Bearer {api_key}",
              "variables": {
                "api_key": {
                  "description": "SpacePost API key (sp_live_...)",
                  "format": "string",
                  "isRequired": true,
                  "isSecret": true
                }
              }
            }
          ],
          "type": "streamable-http",
          "url": "https://api.spacepost.dev/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "url": "https://github.com/404-studio/spacepost-mcp"
      },
      "title": "SpacePost",
      "version": "0.2.2-1",
      "websiteUrl": "https://docs.spacepost.dev/tools/mcp/"
    }
  },
  "source": "mcp_registry",
  "summary": "Send email and manage domains, contacts and webhooks on SpacePost, the Resend-compatible email API."
}

What the leaf hashes

{"body":"b97beb11c5f451694886da16a0f149a8fd962fc10280e2f95b45e03b4c885add","id":1258127,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793380532494843,"prev":1008937,"subject":"mcp_registry:dev.spacepost/mcp","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-30 (243099 rows).

1. 0x645bc5fe9442eac25867515468f4a3ce50f53d58c0c9315bff00fa3c505d88fb
2. 0x8eb38a33611048a64768754c40a0d1914cd6525b4d208ba8417f7d5916158cb8
3. 0x689506c601992c0bc9b0c386e671b6f066fe97a7bc307e86d03e7213663e5b61
4. 0xbb77db5f702b74914423b26f72bbf794ae129d439e68c3a9f6e916427c9ebc16
5. 0x6ef807749dc0c6bc968bf87f1be69035b117300280a8c87775e755ad6abe103f
6. 0x7a374831dda4b0720a759411e4dbdec84600cb9c2121752dce8be0c55437c2a6
7. 0xec9bb8eb646d4928398278a3215c6c1eea13a7f889c5afd0b5ed22033487d7ab
8. 0x3a3f2ff514c37fb4eece10413ef7a73e93f18cc791dae322de602761139707d9
9. 0x0cc91b3a6f01582c56c9b370435baa7a85cae4240a825720a470bea4cb00dc83
10. 0x23fafbd6d4e4abded4b0b274570010f4df465333ed1d656609adb07b518c32fe
11. 0xf744ff3d422d401e5ad565c5ab0e0a5f3802bc1346a721c0f1ea087b6b601f6b
12. 0x3af23ab148f0bbaee09307fb949963ba200b63c08464f0ff3807500afab9898f
13. 0x71866e46af973a0dfdc12482585dfcdbcf016f95832fc06f75f5454e82088a3e
14. 0x863694f188c4b3bb5062c468823f130a2c1762c9b6bf2ce9a68fd27f465427d0
15. 0x7ecc532de10b728de98de2eb2a81fbd8da2254ff32b38b6ffde14af9964fc470
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861