Evidence row 1257505

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": "2026-10-30T15:16:06.639689Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T15:16:06.639689Z",
        "updatedAt": "2026-10-30T15:16:06.639689Z"
      }
    },
    "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": "1.9.2",
      "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":"04abae8764089ba2b2e6ba3410140bfef90b2961958727b8c1c88ddae60c0d62","id":1257505,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793376928722242,"prev":1249516,"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 2026-10-30 (243099 rows).

1. 0x5a2f67951d9efafcc161d81bd39fed9ba48a4dd537a50cefb43ad3e04736a518
2. 0x2c391bb2a4c740c21a84d1f215a76553730c8e9f521e683de8333adf755ba3d1
3. 0x3ad2c425ae5cb31f6c29b78c33df6fa53dd63b18cb4ec58204640a022840a009
4. 0x0b9444024011ded4ee31053bc4d39402c22aa981ba017493afe973496d6dec1b
5. 0xb81a7e9bfc0df124ea6471f542212fae6ebee38e6f1c09e03c3e160f7d5a322b
6. 0x3ffcf9bb3f1c47ae89f228bee69b8c1d639cd0341d6f86ec491504cdf9a92197
7. 0x8b6cf2d2ec3ba179f45caa553c438892f13eba14ed427f0cb6b5b2438dc7d83f
8. 0x4d0011d45b5f12cf4955c8115e398b84d970403042d5623bd30463d9815df9bb
9. 0x28b5d646b467d6dc8b99f196359089a81bed1ec71456df3fcb3dafc70139f73f
10. 0xe0387454c1fabec44815c7a1e99722d734aab9e51c2f4f6310a9265454fb1fcc
11. 0x903361bd8b3971da6ca5f753c5215165181617b94c6f0d29538d5761a68f1a1e
12. 0x54ec80395857c9719ea9c92c5ed7e57a962472bbc13e8619615a1c4817119b2c
13. 0x2ec0a6d79ff828ec3f4a33d6574863da0ead3c7bbeae5ac9a5f800d4be6a010b
14. 0xd036f65644c5bb700403844636b74b07a0ecb42fea108fce98c04207855ccb3e
15. 0x7ecc532de10b728de98de2eb2a81fbd8da2254ff32b38b6ffde14af9964fc470
16. 0x910a91495535ac1a9e959d27d607e185616d2d41b45bc7071c6357f426f372d8
17. 0xffe660edb9e5c6e3449a49454634c3e7b2f9fe703e5697f723b021735647ab7e
18. 0x30a81d8fcef4e8f9e2877c62796cfc5612fc1b251127d531dee28f8dbd5c5147

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861