Evidence row 795793

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": "2026-10-28T18:46:01.353265Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T18:46:01.353265Z",
        "updatedAt": "2026-10-28T18:46:01.353265Z"
      }
    },
    "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": "1.27.0",
      "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":"43f61734efd513bf75e32b6ef61ca9a575add7959b8851d3e23880fc364a0023","id":795793,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793214747316877,"prev":443185,"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. 0xe83f981feed56ecf80cba1a27a5b74efa43948498c263929a53596221378702b
2. 0xfffec5c1fd24d42189e7395892652913da4299c19b686da98101dcec263d002e
3. 0xeadd1b22093451f48fb9a31558a635a6c46e745633aa4ae4499c0ca0075bdb5f
4. 0x393abe7f8f0d04938d6b4f8e5e500c70e2848583c156ddd62dbea02ddc646cae
5. 0xf9da9192e821ae4cd8dc3d81d202471487fbe4c0d16d0e55080c80db65ec774d
6. 0x31d81c07a6dedd35f05a157935edd88be0f542444c1840dbb95bf240a69e55a0
7. 0x23f5fcb61a18994ec64f38474c58054e495475d375c2f8bc95bb14f59cc01440
8. 0x07c1c9c2d4cff1444dbc56035e99f95ca301677d570918b1afc98309101cd17e
9. 0xecad4fba0420969c463d061c7c3a74ff4a47a7043198c0f283d140c05622ee28
10. 0xc9f643b6555d823123a2e556704cf110e936cd23bd3de6ca1d8a1063138c6d34
11. 0xa5eddaf2bd61ccb4eaf970907a60f2a764548efc6dc3f0ce7f607c0b5ae50342
12. 0x72ae11d66db4afe4de2044c5b5b64f7a6bdd78106aca4858fb7d4a5e23c608a2
13. 0x93734b8bff0a016dec91589fbdfc90085588c9ce3a15ef260e78280dd1028c89
14. 0xf43a767076988041f743c8dc00db52511a090e0e09c248c9cac00d7742dbc563
15. 0x334629b51e7dfb2339fa4fd14202e288d70dbaccb3e5b04d2d5fb8f0d489ce5e
16. 0xef2ebd45f2cfd41dc3eb213cc4cc144c46b7e9ead2de0b9f627463bad16e3ec8
17. 0x67e9ff3e48c515135fcf3df2675aa4996d35d4a328ce41588ee1a7d93347c823
18. 0xe6cfe00ae4e02bc12327e45b5f3334ea5850ba3bcc8e3101d30a8189856a95af

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae