Evidence row 3945280

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": "2026-11-07T09:16:37.630285Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T09:16:37.630285Z",
        "updatedAt": "2026-11-07T09:16:37.630285Z"
      }
    },
    "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": "1.37.3",
      "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":"c0e60ab9e5c1ce48f2259f9c803b8cb4283965bf833fcc948d24da709cc19ddb","id":3945280,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794043456802569,"prev":3775302,"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 2026-11-07 (195826 rows).

1. 0x9a08ee5585141ce13812e7450a9cf75bacfd55ec3bd7709f01ba905939f7836e
2. 0x1af902c475dee5fabccb7f36961c2a17e0ff82d1e20be79f9c848527d304f831
3. 0xb7c0df6edec35cd51f1501aa2d10fdace85f51d5b1ef8a5b2daacbea5df42b23
4. 0xac473d9fc9303e4531f0e0018099fc21ab5d186af4aa55f7048b5b83298c0585
5. 0xbe8a1d54b9d8e78e00acdef16e6150e5ddb2894c2438caa01066fde6a8612533
6. 0x8008daecc3e0e8e9fcab6e021d5401c210345827cbc9c162e7b53064264c8428
7. 0xffec3ced1d1e4b0983451e8e9a1beacb33612f5d8bdad08805fdf87f5d4c94ec
8. 0xb3e4c936d01f3bfe92b1ccc83b65d7f84debaba266cafee71492eac94e9dad5c
9. 0x11675d15d1b317e0fd110fc91b24963e1d90ef144ff7d1bf4711584712636013
10. 0xda6490cf032d4aa7f8e2fd76f7b222f2e2443d12bbda10e0e741cfacfe20bd6f
11. 0x9ddc02aa1c828db462b13cc6f7fe35dc36655824a7d4c6d1e110c63d85bc4ed5
12. 0xd4946043dd8e8e77ba728f8a5c5bdabf1689330c240241ee5ea4db538ec69148
13. 0x896a302ddb6c3e628fd10f4276effd7379c7f710d1b433719e79adbeaa864e88
14. 0x29f53556c590185a8a72635fbd8aef678cf0c411497b5985f3632d619ce0bb36
15. 0xd43f13f6774b4e9adf7a95c9811fb4fe9b9256ca73bc6f20577cb4cb147ba0eb
16. 0x39ddab61a3a1eeffcb2f54acf6ff87eaec375674f3e77f00c342826d4e1bf071
17. 0x3b69f6d98c91b21287021db092e52491474f0d08438393ac130d6a3c273bcd4a
18. 0xff23fa8a9de3f957315ef0dfe7e8d8f6b1a51dae05fef7615c59794e019ff05c

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa