Evidence row 800668

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://customcat.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/customcat/"
    ]
  ],
  "name": "CustomCat MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-28T20:05:01.059798Z",
        "status": "active",
        "statusChangedAt": "2026-10-28T20:05:01.059798Z",
        "updatedAt": "2026-10-28T20:05:01.059798Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Browse the CustomCat catalog, your products and designs; check shipping; create and cancel orders.",
      "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/customcat",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://customcat.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/customcat",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "CustomCat MCP by usefulapi",
      "version": "1.7.0",
      "websiteUrl": "https://usefulapi.io/customcat/"
    }
  },
  "source": "mcp_registry",
  "summary": "Browse the CustomCat catalog, your products and designs; check shipping; create and cancel orders."
}

What the leaf hashes

{"body":"e72e2426c16485c37decd7db428ac24cdeaa1530ca816900f466e855cc45323f","id":800668,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793218350749567,"prev":795646,"subject":"mcp_registry:io.usefulapi/customcat","subject_kind":"source_record"}

Proof

Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of 2026-10-28 (231336 rows).

1. 0x6b8b4c8b2415e3047ee0437d6a3c97ee5a26eacd05e3ac464d580a238eed33ca
2. 0x3b734bc760b835ceff53b959e72e2b676f43dccfad5b732137fa39809e234d41
3. 0x4485924027d9d5d82230c3200aa11ad8e9590e4ee6419bed5a3d810045e4c8f3
4. 0x0ec6538a2f056428e19d2ab018fb7637a59ef40c9a080d7c91ed10432bba6997
5. 0xae8bc6ef9d14c6dae69989f2965715ef27501d700139c96e7158cf5a26075d59
6. 0x08c4681dd4c25456baf8a4c23845bb0ce20f7620fe8492f36f145332b38ee1e8
7. 0x57f383e1723bdc5aefb36111d1d02daa2f9ae1dfee6986cb36ed213335841e3e
8. 0x77cdb4d5291e562cca64122cd52c7fe00d052fa9b53c4f6d3d710400fc67e0d2
9. 0x6407933c53e4b32b6d3b4b9b9ac6ddb6cd32dcf35cac43d7e6312d57ed9e0673
10. 0xe2737b8ba08e348856857c20884e6bb20cb62c0a8a75865ba8bc8c7f15752ccb
11. 0x42eedd651823d0b3a92aed33892f70bc8deb0fd1d2d57009c673bf637b3d5a12
12. 0xa5dc8bde09a0592357df20e8407be89c2531fc0bf17e0d5a15a0464d79e7bf90
13. 0xc0e02389eb414c04a7dc9b6703be98601510da00046cf6f744adbfe5e43bf146
14. 0x9629b9515160844aacc33a6aff292bbb444ac65e0d773f2fa899885c3481fa54
15. 0xe6054de1f67b1e6f15bcf16d2b6536cf35dd9705fdf6ce59853e79784693ab5f
16. 0xa99a40fe210d675bb6ab72d4bb72ab40eb44ac345773c457fbe58e67a47b03df
17. 0x7a743a0a09057bae687051274e1d45bf973bd36a1a4ba16a191b5d29e3bdfa2a
18. 0xe027395fafb7fc41921c42ca0542524ea22204cbd5908b70b27f3d5fb26f5d0f

Day root

0x2c19037464cc4c493624565f01775d6446fc78eaa118fc6865bfe2bfca9ff78e

Chained

0xd1d7dee8322ceff8f4c8d83aa1fe4a4466825c2af1c97dbde3d35db61234f7be

Published

On Arc Testnet, block 69584042: 0x8bae2b1d097834c8b458513862d70d29ee807e98dc2e863b27250131c15b35ae