Evidence row 3775302

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": "2026-11-06T20:24:54.885613Z",
        "status": "active",
        "statusChangedAt": "2026-11-06T20:24:54.885613Z",
        "updatedAt": "2026-11-06T20:24:54.885613Z"
      }
    },
    "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": "1.37.2",
      "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":"cf9e563100a9b7a9de7809f1f8ccbd10a3fdac63284f386524806b6435d4e596","id":3775302,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794000217341565,"prev":3764984,"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 2026-11-06 (303443 rows).

1. 0xd3159bd3c88dedce25ab9639adbccdc5c74241a944acbec795fc912b18128e00
2. 0xf9130807acd740b109984ead60cf6d655f829e46af23db2306efc55664408c39
3. 0xb952a0cc89b61fe65e420cae2b9c724913d2ac9eca374b649c8e35d29180bc9f
4. 0xd7310c68fea9e661522b26d9c74cfc8d7dee5bc9895a012603c83b71c91ae511
5. 0x51aca32d2f201cb219e0bdd0f3a29b63d1408afcf06604910ed906b88ba1b2f5
6. 0xdde2a4327a384c8e8774b9f4a87da5606c6e4766aa6aed526741a7419060c574
7. 0x1927ce6abb98b4f46160ded4e5caf48619bdc8c564b7ab00fc177f71cc8919eb
8. 0x8ddfed027739fade188d0d50f7fb55b660e51a5a711c08118df627b3c4ffb48b
9. 0xce7422edef9bc7a478f9567576dc9a6d78f045263c66bdba0f061bcac1e6fc35
10. 0xc9efb11b312ef6175aebaee6959b319867557eac9970d433f7d26d302c91ab49
11. 0xdf6674d4145107a22025080275906a0a55c365bfec79ebe88633818e3628eb42
12. 0x04ad232191b739b9c2e0d247158211b2cb642b82a78a5b5ec2e5521fb69b070e
13. 0x024a8b5d84fc99d367f5fc2abe741b7f1d3516fdc26aefc99daf71bb695fcc54
14. 0x9b0165e4352a0b8fdd80b767eafb2f430d996588dbd157804ae48456ed17652b
15. 0x821ffa0a1fb7e66ffa8ce79fd755aa408c67dd0ef62aee573ea2278fcbd9823d
16. 0xd47209ac9b2ac71257b5162800ce4482f8cf7ea04f074033847ad335ca758d32
17. 0xf19d501fdbc28e10c3244253daf0c37c4752659eae14a7cba585a18c7df9ce0d
18. 0xd422a75f6c3780ed53eca52b50bf40b8f17dc14cffb804142e44fc9f2672029d
19. 0xc0d08d48601d1be90bcfc025e66bcaa0030120d688dd9c919b36c2c4446f4948

Day root

0xb30ccefe7182c6f767e1fcbfb5f64ffd649da831f665f65c5ff39cd40512284f

Chained

0xc383f7ef68d2914082484765aa09e42c12c59a74a096ae64127c562618c506d3

Published

On Arc Testnet, block 71111178: 0xfba13cb7ee4ada7f2fee3702a786a2201596be2ffea37dfc281ab4c8e9942fe1