Evidence row 288956

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://lob.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/lob/"
    ]
  ],
  "name": "Lob MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-26T20:01:48.667729Z",
        "status": "active",
        "statusChangedAt": "2026-10-26T20:01:48.667729Z",
        "updatedAt": "2026-10-26T20:01:48.667729Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob.",
      "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/lob",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://lob.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/lob",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "Lob MCP by usefulapi",
      "version": "1.25.0",
      "websiteUrl": "https://usefulapi.io/lob/"
    }
  },
  "source": "mcp_registry",
  "summary": "Verify US & international addresses and send physical mail (postcards, letters, checks) via Lob."
}

What the leaf hashes

{"body":"2533bae14467fb3c4c567cc2f9a70cef82c8238f1be432caf79df8a9efbbe2d3","id":288956,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793046219067234,"prev":56693,"subject":"mcp_registry:io.usefulapi/lob","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. 0xfc6f4a32afe18d896961e45f308c73179ef1252b591cc68a04bae91f0fd47b59
2. 0xbf5e8599397882c8e52cbb68e9560e113b4dd873a81eeaff8d0c8f7c1bbc99da
3. 0x5f3d552bf31ce012598c41d2c9e38973a3013993454728bd1f7e6bf5c3ed94dd
4. 0x36f5e9a0ec41084dc4580f82e5b675eba129ac25292baf4206b15e47240235d8
5. 0x6966ca7ed7c80d36ce4a83b8e67b173f529b6a45b66f31559c1a859edd32ad12
6. 0x62d872e03f8ef7232e79a29d5614009b400ff979bf4f56da789d3497db02dff9
7. 0xdf5739179ef80a5f77c42a42be59925a6cb384ef88855819125a06ef5bfddd8f
8. 0x4165c0cb0e8c78a03561e1f87bc6b0492b7b3143650cf8b255a233fdb24cb642
9. 0xd5e84a76f08a9f9783e8b3ad62be6916de98755223b57f9f65d3166696157302
10. 0x3a8d3d4169cff276684d88a4f127811b670ead57557bd0903bd3af277772b2c1
11. 0x51bc8fcd224b36d2c60fa49f46f383ee8328191b9e73209ce8018f2612c3d42f
12. 0xf8173f36b7a27e1bb0f6961a49501bba1d99349c5e11449d0d557fbaa910be0a
13. 0xbee644d57738676bfb20eb90d6021f364bf883a8d54f8d17e9dc4749b4074c3d
14. 0x44945ea9ad8b24e723ad5a8fd6d014024a49531783f74ff9229c2ab6930e84c8
15. 0x68d296b1e00b4899fb83c3fba36fffaefa311eac2903067dbebfe776a12b4a9a
16. 0x5fb5dda563336cd1bc1b9f44c52b76237ae72ed2145cb9290f39f304ca7dd678
17. 0x74a0a08e4e7ab9aa5bfbead33dec7e1c7e8e364cff69a63720d764bbe987aadc

Day root

0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8

Chained

0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a

Published

On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae