Evidence row 3986895

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": "2026-11-07T21:53:58.194604Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T21:53:58.194604Z",
        "updatedAt": "2026-11-07T21:53:58.194604Z"
      }
    },
    "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": "1.37.5",
      "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":"095d5c7799fd090ee434e5df7b23135a3758fdcecee0f6e5dc8328c92d1dfd52","id":3986895,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794090326221639,"prev":3958126,"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. 0x7191ef0462c19a1e4a990cbf9dac665a41e93b01d7a0d2e13d87fa22ede700c0
2. 0xf73e4c796e7e21e497349e94129a74c22dd1062b52e0f5b195ff3b00e7da98bd
3. 0x425ec7cbf5d1d505fb32f29bc2765d7b0c12cbaac06c3c429e572652226f50da
4. 0x0f46c41f718fbda7f1b41b5d1ca0c20346f7936861b4428cec8636449e0ac3d1
5. 0xde3533995b61a415ee96ec9574f1e9d4d53931285474d741322b3f67998d6e9c
6. 0x272ac755c57411b3f446d266453b303f4a2ea954018225251e0581e563d7678d
7. 0x3cb3484c5e632883f8520f47d612a2069c09206239cd934cdbbe25544ece0ed9
8. 0xbb4e3e2614c16c3964f5b36011500f15f0897bec2d5fc3afa92c35470e4fdab0
9. 0x1a0875cdafae430425f88469ab5aefc2ed1119072a995958a94abef2fcb80da5
10. 0x0d40e4448cffb805f44679b67eedd09020d091e9709d1a46081cf9b01eb8cf80
11. 0x3d94c6a01f432d61e10ed7ee150c62641ef6c4488a0eb7065c4c16d3804e9ece
12. 0x86b32b96c3e608b2e5b16a1aaef313acf9157049d7a9c475bae2c6417846fe1f
13. 0x7d1dd5bb14b5375b9f1486e172c5a59a72474b2313d43fda1b9b089df406ebbe
14. 0xe10968763bf5f376ed7bef52309abc0adc0394947582477a2899a3f332842d95
15. 0xdda41bf8f8b807884588170276b0203d24918e4a5c47ba7f4d5d0217f85e0cf7
16. 0x9108c80d13a11b7549b554924410a7c5d215a2cd03aee9659ca627cb099f1a2e
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa