Evidence row 1500244

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": "2026-10-31T17:14:06.168642Z",
        "status": "active",
        "statusChangedAt": "2026-10-31T17:14:06.168642Z",
        "updatedAt": "2026-10-31T17:14:06.168642Z"
      }
    },
    "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": "1.32.0",
      "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":"777cd2f9853ce7c5871a1682a42a06e8f5d6c0225d5e10698448b02ae5d4bc5a","id":1500244,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793466975412740,"prev":1482038,"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. 0xdac59002d57810a9ca13900d0ecd8f2631169589dc5023717b918261654bf5e3
2. 0xe1b24c6f6f67a6ef6e0976e8f6e8eb66e5664a4a4cf8982572a6b32b63037579
3. 0x08d8a6d916b2197f091750ab2b23b387d75a94eb5256ff0605310a213b00d226
4. 0x2cc86b9d05e69e0b33cdd86b0bda6a6aab2d8a9f876d0ec938d364d148e9983b
5. 0x8c35e3b4d030e3128164770711e7aca573df48d916eadbd5466646b3b3b62049
6. 0x15be5b0f1d8a3d82e05a0c0543934e14ff5365a7bf0d98a36cee3e9ffc9e4da0
7. 0x8d45325f8ea610e1954bcaf0445be9afa232ba2455cdbefbfc2f3f3f07aeaeaa
8. 0xd55b78caa415ad89c74a1aa8a6a86a0ecd8e3f94f5e233b20c343d930f1956df
9. 0x9ee108c5579aa849e7917539ae84c79634f4fcae0707cd94103f45b3d548ce37
10. 0x6a3c1a819cbcd30703723249fad73788333de478447d29baee99dc7a7c018019
11. 0x1b6bc9ab50690a64d6b4ff6944cb0ef973e19813671a631f7221a979fc869916
12. 0x0c06adadf19f919a9d5dc3e0de4a333ea84b77c73233c4564014b6745a7cb638
13. 0x38ff5931db651d605476dd5d3ea00904e0ec5807919810f7803011a660e48abe
14. 0x33d6b05cf42539c0ad2d9f9d3b99e4003beca3e59b45affa3d20cf6d400d4bbf
15. 0xad3f03d7f9e1b66264ddfca29446faf13bc0fee7d8eec5f018d0d45302d3f8fd
16. 0x24f03354dcb3a621317889ed99048bdf74b380516ca991bfb585c751d5cc7dfd
17. 0xa1146af524f673843507e7427a575964580eef01bc0e0eae466a7920df017ab2
18. 0x0504a25438f3c7932125463198ca74c5064f23f71a5c92763b3fc96a98cc8b57

Day root

0x24463725d1c0d9894bd6123691d532547aaa79f0762c0e45aa6a68acf1fd71ab

Chained

0x7d4824ff313dee7252a46f9d5c37b452851deb6c9f24a40c2f74ee0e53c82980

Published

On Arc Testnet, block 70093156: 0xedb7b832f4ebf6781b5ecd2ed241c435b862f4d3761541fa31adc1831b8c44a0