Evidence row 3414341

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": "2026-11-05T13:37:39.261552Z",
        "status": "active",
        "statusChangedAt": "2026-11-05T13:37:39.261552Z",
        "updatedAt": "2026-11-05T13:37:39.261552Z"
      }
    },
    "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": "1.36.3",
      "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":"d8a18092ce689e36fd710b1a5a95e9ec1f993bfda758f9b6c07d85a3408a425c","id":3414341,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793888497227052,"prev":3396090,"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 2026-11-05 (322504 rows).

1. 0xf25204beb29a5d1dc1ea21399335c66106611ae5c2f746bb83cd2f6c18e4f345
2. 0x848da1105837debee734191b8974c571e710f8119f86bdb7ecb56f563bb443bc
3. 0x211d87f4239bab90e050c15deae1bcf9f9b5036c962aa172ded7ae2c489fde11
4. 0x6ca36e21992dd37e8a2323447ba1ef17112b65fe6772399cbc59eff841513f0e
5. 0xea224c06bfa615a24f7ea7abce021f88db0e68ba8522dfc57c58b593f631ce72
6. 0x0884c83ee7a7a6c5d2de8de7a219b46aee8fba4680bbb6b6a2ccc5c2f732439f
7. 0x5634f2f08d1f1d3a5a7ad1e730dec215f89f99ecdfe09c3828570f7e9ab2fd59
8. 0x2bd36919767eaae270ec0e22cc9d304dbc4b3caff1e5eed1585bff0b251421aa
9. 0x517da8e056774e2abd0ae9ef7e56f8130ff2e0acb416c6fd182aebd6ea1436b6
10. 0xa189163ebaca0a8ba1237b05555ba5e8ccb3effe67be0ba9ed6c237e4c818b2a
11. 0x9600f90cd0bd439f31057323eb5389d5ab832fce0d53372858b1393594d48238
12. 0x504ae57a285fa6ddf612fc35132a6355342f76f16b27b775c018952bce14b0dd
13. 0x4713b10a0590acf2c2bc01df682f7e1cc4a36ca3862adf6e57ca3459d4320809
14. 0x1639b247a5d5a7c1c147128de55c8214f740b3c69e239097a9214d771bef36fa
15. 0x0f89b13f204fe566641bee24955c02233efcbd2fce2017340ed06cf3c4c4503b
16. 0x46e57eb471bdfedc5371f9f8dd93e03a0ef82a84f79b917a40533d34f61e890c
17. 0x595efddb5b196a921c775c54d0aa541065f1802bfefb8bd003a60b16925c4b58

Day root

0x9f0215efb0252701dc86d5600ce95f276cccc716759bf112525ae863f698d128

Chained

0xc54ddff800630c6cd9656f99e7d6a61adce99bf1cea37121600598b0a9a720d2

Published

On Arc Testnet, block 70942081: 0x88f612ad94ca63af4e4e9faab9f34b665b41f03828afac1571ad013cc62bba94