Evidence row 1249672

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": "2026-10-30T12:20:50.171623Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T12:20:50.171623Z",
        "updatedAt": "2026-10-30T12:20:50.171623Z"
      }
    },
    "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": "1.30.1",
      "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":"b653700f2ddc32bd1714319401bf9a6989aee408f2be72e19980a63e031d1dee","id":1249672,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793366122579764,"prev":1025724,"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 2026-10-30 (243099 rows).

1. 0x5f3fc79bdc2eb0cc64310f2b49f49da83a09096cf872e40444622a548d6614b5
2. 0xa13255c019fb7bc191ffa874a3bf51e2cf81239297f99ced5ff1fb613da8c97e
3. 0xd293c3ac0f3a785062cfee80b8f8391b55c23cee505357140f4b7a8b7bf82de0
4. 0xe4d05c286661e7dbedd7876e193a78f377388283217d73aff8e2252f6fb2b3e3
5. 0xfcf7acb5cac5230fde69a3c03243442f2efb0916b16c1f90b533afe7b6f0dd80
6. 0x068541076657292992ed3029bf49ff0de605bf3ec721866e0d793d5821300ca6
7. 0x5e5bdd7f21085726ce0aba27e58e1ed6c4277022b8c9e3eca08fd530f272051d
8. 0xe782c2247bdd77f8627925a2a5ed94e9df33d42fccbf98814996d32fb086cd0a
9. 0x87d95a44debffea3d5edd81c59d080b87e66cf1def13a643e2dba480499ff4bb
10. 0x5e5a5ab0fe414c90ed54ed19558345d9523337518bba714f9c97ce2e8dc4f48b
11. 0x0937a4b35cf4f92a1eec6d511e4b67c720fd0d7a85144e1e3e3b574a7f95e4f3
12. 0xf367c0b1df2ffc15b764b5ad0caaf07526aeec73d9b9a4fd7bcc5de033506aee
13. 0x7ae0971906d125dd6b90b4b23f9b0f031568e95c77c8aba07223b5ef3ee3e226
14. 0x863694f188c4b3bb5062c468823f130a2c1762c9b6bf2ce9a68fd27f465427d0
15. 0x7ecc532de10b728de98de2eb2a81fbd8da2254ff32b38b6ffde14af9964fc470
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861