Evidence row 1541358

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": "2026-10-31T21:44:02.908757Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T21:44:02.908757Z",
        "updatedAt": "2026-10-31T21:44:02.908757Z"
      }
    },
    "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": "1.34.0",
      "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":"62faacf094569a0cf391cdcbb7667d974a2b96a942ccd7eeb357bda241b432bb","id":1541358,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793485023234903,"prev":1537946,"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 2026-10-31 (246033 rows).

1. 0xff928dd77e5c5c1aef627875dee736f86b2ca0b216e2114ce1418c7b5a306ead
2. 0xf8f0db5e77072bc4f8e9b16a741b59bf37a91e71cb2d751731c97b19d75d046a
3. 0xdd09628c88f3c2bf1aba2ecceeb928a8643f96b37717f1e701f566fde2021f36
4. 0x93d08b76617e7ec522c4175a2e994d2034f1ae97a479ae45f7e6dde7cfad5f13
5. 0x9541924ebed48b442f5eb1d2e710323d389c6091fd2870bdad68d2119fb1af63
6. 0x56d67bf190dcb9bb4d74bcf53e01eca5e44fdcebff453a31fd60362812a2ad3b
7. 0x3ea4ffb6db08ff7ecac2d2d00d56dd551ac67e657d31b2325ddf6f992083ea24
8. 0x0b8a0b24c4cce1d0b8cacd13b0c6cb6393973c7682b2e21b18f90a8070184800
9. 0x0cf82ebe990cdf2535d2004bba0ce22f45f1e77613dc33b9d4ca4892c4307de9
10. 0x185a1ca2e19a7de76010f9aa1bd931b91dcf0685099381bb68175a7e56092fa6
11. 0x7f9769d405d897d1fddcc100c53b1c1d11360cb30c9421985e441655e4ab5106
12. 0x79a7d3bc40b3cef821530aacf5be4a901377fcbf09be0c5e461295c2bfd385ba
13. 0x5351bb459a6a771e5069a93e1e2e3827a67e432c5691b54849b4102bbcbf5577
14. 0xe2a6611300abdb7312e664a37fe7f1b470ff8ebe48733a7b7064c0db1f012dd5
15. 0xe9e97d8cdaf19b6da06606a22b4eea548063df6bacb661abea4c37aa637b5c3b
16. 0x4befbbd74452b2a3a89b7e1e809ba011f1be78aeb8153059503fda47c454d086
17. 0xa1146af524f673843507e7427a575964580eef01bc0e0eae466a7920df017ab2
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0