Evidence row 3958126

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": "2026-11-07T18:03:04.955205Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T18:03:04.955205Z",
        "updatedAt": "2026-11-07T18:03:04.955205Z"
      }
    },
    "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": "1.37.4",
      "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":"8ba65de7644bf291d952d1320eed5a072ac6ebe49fceddf5a46f2a02873aa28a","id":3958126,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794075899657824,"prev":3945280,"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 2026-11-07 (195826 rows).

1. 0x9ee88c47f584f72b119fc9f42ef1659308d0e2804b49b399b63e49ffc29b290e
2. 0xb0d0d7d8cd209f72b327a8c2e5db0f8f456dbd4bc54b6045c55865aa733bb200
3. 0xf45143469ae39492e0cd6a498cdbbfbb84d9d440a5e77b3bb367b8987544ad1d
4. 0x903d8cd58342a362d8f6b9190cdde592cc4a7040192dc7d961b3ad72921d0271
5. 0x757b9efbef402d7ecc58d0ffe1eba1af7cb4b5f6cd88521a736a1846c6753644
6. 0xfcd79f3ac13cd8a7fee706cc6445f7b23ad67c294ea3f3ed398b524b67ca13cc
7. 0x9b98472c3afe94213b63d5bd20e26bd4b9177fa71a9fa0d6cfc093328f38dc3c
8. 0x3e0f5c961cc1fcbaaa4f802c866f0c807befebf6e7f44287ed25e9020440089f
9. 0x5dab23b2b62cd36f07637c4923c8483d1d1f49b8961db934d41b4d3b78b7f864
10. 0xed196854faaf3248415c5cebacd79736a42ca3fc61cc793338bfb69a060cf2d3
11. 0xc6e2fc1bd2ea3afd35296dbb06d3bca2d23f0948d253b225cb999a5fb4bbdfe6
12. 0x46137e7e93e4c7915aac274a00a4ce75f3c34ba96756aab255a15cff3db3242a
13. 0x454533c58a8b3dfb2df9d9395011549998249a7cb6793d6cf77b5284bd2dc576
14. 0x29f53556c590185a8a72635fbd8aef678cf0c411497b5985f3632d619ce0bb36
15. 0xd43f13f6774b4e9adf7a95c9811fb4fe9b9256ca73bc6f20577cb4cb147ba0eb
16. 0x39ddab61a3a1eeffcb2f54acf6ff87eaec375674f3e77f00c342826d4e1bf071
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa