Evidence row 800814

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": "2026-10-28T20:04:48.295594Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T20:04:48.295594Z",
        "updatedAt": "2026-10-28T20:04:48.295594Z"
      }
    },
    "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": "1.28.0",
      "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":"d97a907446557977a6d0192e2e30bd408e9d0f90749ce5d336a124fa9b946de6","id":800814,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793218352152124,"prev":795793,"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 2026-10-28 (231336 rows).

1. 0x2e6e1a93251f646710553591dcb26193a6559ec1fc61e7f0d3c4a954c15cabfe
2. 0xb4529d24a9d74f48d9636ff4a571529691447cf41a381a1e1055e9bd20ddbd75
3. 0xdc829b61a9a361daad08719c133774bbdf6ad06a8c10a8ae0b9ca08fc18bc1fb
4. 0xc6ad59ac7ad98fefcf445426f25d60d96321c606f19272f7eb7d41016b8e7925
5. 0x86e212b97c7d8e864e487a4da3f4b8553f51c4aa8be9b05836ca39d3c9c9341e
6. 0xa9bbed84bdc2519045fda566927f1b6128735daa9e2df24c080033705178dd5f
7. 0x23acb6c9a3236b95b506171eaf00893b4b19780799989c881122a754301f7649
8. 0x419e82ea8b9252aefcc31edc2c591ff3e943de5f065a5ffec95f3ec3135a9a86
9. 0xb13cfa160beba9c310a66fb31b91e4fbf7e5c8501de2f59a841714237fef510c
10. 0xe69bf76fb5872815ad6044918ca9a8732cf5e9e98c0c0e5b59cf083fb19c446a
11. 0x5177a90fe1db35842c16715c6853f0eebf60d23fa47c98ab0125cd2db0a27032
12. 0x0383fe3255c79fb178376a593551d0aefd8c75bd939df4c4f78d5b4cddb8108a
13. 0x812d7bac70bc08f291fb19afa5eb8416c90a0b364e6f03602654beab04a997ad
14. 0xa96695bb231e3cabeb4f03cab216cc6730b71e2304bf5be1e6c0447ea577aae6
15. 0x8d500b42a7bdba5e17ebd9e6a404f2de5260cf3420865b41e7de8c69434ce413
16. 0xaeb1503e5d0d358b256ba97a10178c357ddb8f55cc961925ccf0458aae5ebcae
17. 0xf078ea7d84d98dbeffed23d8e67b36751e60464ffd4cfdc005e0aa6f8cb9b459
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae