Evidence row 2564671

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": "2026-11-03T09:53:52.778908Z",
        "status": "active",
        "statusChangedAt": "2026-11-03T09:53:52.778908Z",
        "updatedAt": "2026-11-03T09:53:52.778908Z"
      }
    },
    "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": "1.36.0",
      "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":"5e705677212cb3a7378ceeb83b0ea85b17e829c341870d39d530a903d4037e23","id":2564671,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793701161708197,"prev":2546566,"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. 0xc3955b960fd2c25306ba656f00d08ffd0bc2b91e3f7d2b9e15db80ab2b98e940
2. 0x334be8129c3314cf802a93ca76635f7eb81396dd6fc0d6eebe21bf016c668bca
3. 0x71e10da2ac4c709b3b67b040e26219d6fa45f1b21c1b35aa2cbdf78992a848b2
4. 0x77665ddca4a0d8c0c2ded38c1468f2854ea7fb5c7ee76ad70ff8839cbcf95fc0
5. 0xb8adf86df3194603101f27bfe99172a1293110a51af241129d8d6219c26d4bc1
6. 0x3c291c58e12ad90290eb374c99e7b27bb3f55ad320459125996f792842289b6e
7. 0x934fe1fc25b864c777cfc6aab0d21d38c2d360aa2c66c65cf8a32d55c115112e
8. 0x0805568955588b4e9790a2f44c19808eaf4554ae4b7c965378b051ce2af82ca4
9. 0x600c8aadd4a8c97709a7344e0c0adb5a044e0525cd2b221a294cce9cfdb59fe5
10. 0xe1f92876480029d7e6fc4c2a7c705731cdc2dcea1081eac39bea10f5a98c7302
11. 0xba8a1ddb47918868f0b7a37abffaca79c309a43f5f99dee8102b0aa410074b6c
12. 0xdfd9d421308e6272681c7a863c1a74ec5ea8af2c6f0d90f5ff2dbdc578721501
13. 0xea5662e345c3629b99f3561f2bce8ac753b4bed58f2a329698d8e798b051984f
14. 0x1d666a17ae41c2931b0c5276dc8bd8c2adf9827a61eb629d06ca3a33ee6a051a
15. 0xfeca812d56a4bb476433459149c92fcd8a270bdbf2bbbce1949fb4bf7848f5ed
16. 0xf8c1a0cdf4ba2eb105bc3e83d2f2b121cab4a34fb5a3846fa592909906f7fdaa
17. 0x39dab39081985bbfffe23b080399a9d1a9cb9c2c8960102350c4212113cb2cba
18. 0xac5402954216dc6c7020a6405675c8fc3b0828c2ab02943d80de52677a2f1fc3
19. 0x85f3a27c16056a361d9ba33355a575ca7123f86de901b204c88953c4b8ea441a

Day root

0xb646ffa569e24bf8336b0a15a9d98d0a2f1239f58e10c2b18a9d22e43343566a

Chained

0x35e926359fd19031c6b5e08fb3b44f2524386a57c8fdd353336c185603f53d43

Published

On Arc Testnet, block 70601990: 0xa5f9dadba13cde129126b950e64b815e6833cb8ff53b75026c9dbe769c3768c7