Evidence row 2726525

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": "2026-11-03T22:28:59.261133Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T22:28:59.261133Z",
        "updatedAt": "2026-11-03T22:28:59.261133Z"
      }
    },
    "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": "1.36.1",
      "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":"2c888c0e30bcf16e37f5832a92abf747f68e859e200932a2937f375b59e5d2fb","id":2726525,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793747993085912,"prev":2564671,"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 2026-11-03 (425475 rows).

1. 0x8184af19009f28e1cfb6273d6d0ea3bac1836add3c5dbfdd85b4dadbaba264c6
2. 0x5ad2ebf8a7872080104e9b1f0a4e12ef84d62f56175706897590bf60f57ba130
3. 0x2d629442996cdfe35b923caa9a3e0d2854a850a651204be775bf38ad8b56de50
4. 0x22e0b2be67758439499ff7ccd584eff4a0941d5f30494eb4e6c8e64d8cd3731d
5. 0xb2d1d04e1d85e7c88cf13f543bb0b951402c38dc60bcafbe528e4fb8682f984a
6. 0x882e74ec04cab0fe1610e1ad7889b11f3bf198138fa8f526972434aee34debf2
7. 0x13d9ef840e508a2d393d5aa0da0b89d1d17c75514235fe6f83a52f9fc8cd91b4
8. 0x61bf3884cc7456e15f16af5b6a2cbd121fc54960c7b1ffe96a79548474fbc27c
9. 0x93f25660c4cf2d4a5a811318fe4937abde39ccc60612a82b77d952435445b8e0
10. 0x05c3f25ff0000f51c1fe39b388c909f6f8312dba388cb99227fe2a00974e3377
11. 0xf01dbe4c2634681e818cd6b368438f3c6c80267f7f89e578e42d3612eb9ccb01
12. 0xc6e642391f030893fe7f66a15e69811e6a25de963bb9b00c10fbfe5f4de0073f
13. 0x4607f3c9a6344785c28144331cd5f69653994a97f95db7809922902bd2d6862d
14. 0xbee84d3e599fe34053b7031286879fa3c8cfb9cc2a5d0992b542033701205b5a
15. 0xd7fa57d9cb0ff551366a474cfe5dd932be199a84a12f0b57b253725627acf8dc
16. 0x4f4b24a0a0ca0387085210387f5358e81c7f788419e50cf11713524585340a3c
17. 0x271a5f715272513f57457682f93389885577f2664b5ae5dcea924ad10a098eb5
18. 0x717b5d7cbc24826c5b1f7b7433bf30b76e9ba1370476af4e1b494a5211897cc3
19. 0xe35032d4b064b015fe60638756eeb0bc24e7c7943586468d33349341ee0ed3d6

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7