Evidence row 443185

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": "2026-10-27T08:34:50.965739Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T08:34:50.965739Z",
        "updatedAt": "2026-10-27T08:34:50.965739Z"
      }
    },
    "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": "1.26.0",
      "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":"b8fed0a42a5ad7babfa5ba8446392bc85b535fc0b885e85d1e97e03f7f4ee28f","id":443185,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793093258467171,"prev":288956,"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 2026-10-27 (273461 rows).

1. 0x99cbc89172dd803d552374bd392f9654424e9a5aefcb76d1529f8348e007798b
2. 0x3c2926b2d8f6ba441b88d988029b1585cd3e09ae430ebd9fe6160af36150a8cb
3. 0x02905275409a80352d42e0838772d20b76200117b97aaf17b9da861f416d0645
4. 0x596d2bd3ba221fe28b004ac796e1f089604f30ef237e1adbc1927858e827d75c
5. 0x13fc13d8e713bdafcef84b044941f63947a8c1de1a93ee6c977f208dcb455653
6. 0xc5242b85c5b55e30b901e1d8b1dbf996c8602e552303b214d2a8368a057ea3fc
7. 0xed3942f21e87df0fccf4d598dfd7192f7e00af6813a2ccb21eba0dffbc00ecbd
8. 0x69bee9e4783030bd36ed5b2512c5aee736705c6ab61d4c799edd243a4488ae8e
9. 0x1e9805b0148f53e69b1c5200006b450268a29510d527a1caf36632e92ef4390b
10. 0x1399d91736acaa3e26e22c422b8bd56ec5d4892f0cc98ed074ae378d878f10ee
11. 0xa41abe253efa912fb9578616717d0a43d778c1509c3109fa4cfcc00433d8500d
12. 0xff66a3c0db6d61623a5ee399a8625355b32e95a4eb77e6d9f9ca4ae4dcbc5937
13. 0xfe6d2e9a468b7e99de9162a2ef30ac0b0e3b318387b4356bf524493aa67b295b
14. 0xa3c9c760ee424c178bab782711c2b9d3e15a80a6fde99165972cb75b306bb8b4
15. 0xb4f7223140c8a36cb87a63d77cf617086d9968dc4658f03e102571ebe06e9ed6
16. 0xfecf3d4646dd4984a13dd715499e842c3fde63692336d97394c2bfd8e877ca5d
17. 0xf30fddbf4811226c58e8f0daf36fddd79fc5f1356b592bb1d99a8061ddbabe66
18. 0x2bf8151e5f157dd183b9de6fa00469551932a7a6e3f33a694895000ac9061197
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4