Evidence row 443041

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": "2026-10-27T08:35:05.912281Z",
        "status": "active",
        "statusChangedAt": "2026-10-27T08:35:05.912281Z",
        "updatedAt": "2026-10-27T08:35:05.912281Z"
      }
    },
    "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": "1.5.0",
      "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":"81ffc2f1e8c00aa76857cc707a7d0a1194a7ffcddd85c42b03ad3fb0c1b4ab8b","id":443041,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793093257712107,"prev":56549,"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 2026-10-27 (273461 rows).

1. 0x67f1388382c98fdd6c0137e98240866159f791af3b6f66d8d38f40df5b2eb1f5
2. 0xd3cecec7d2bad132d5c535f59b8b83d9a0b9ba303612a27b1bb5488272c17fff
3. 0xa00c7af3afca035de22a26b733970503c1a616e000ca4980c596e4d149979544
4. 0x1f7278a8cbf8422902ec639cb714f70028c9a0527996d06fea4f0da12735b56f
5. 0xbd5ed6af2a7346c43bb7bca0296b95bcfdf88fa28a38fbd592a9c429fda82083
6. 0x621ca2d7d41cd797250c23ef939614a985849babca6509f2184215af4c0c0a8b
7. 0xf1a3423ddb634cf9e77f98edaf3f14259fa546e619939442f22b58a558e7e156
8. 0xf6e727d8a994cca688202ce0af923ee19f001386f49a4acfdb348a0d80d9d192
9. 0x0825d3d749a79aa3e9758cf48bcd8ef3e4a8975a3a655b692eb00a005ca017b7
10. 0xdf60cef688d372729c3bd0374d7f0df09dea956d2629aeb2b309b79f31695c18
11. 0x3b2482479d5e8e62d596166a26d5feccca7716478708e2d2eb271e54277db5ce
12. 0xff1b653b4de97259c183e79b75886676f24cb64cb6bbe1a90b1639f9b46e2c0b
13. 0x927616fada4e04588c09f6e02e8f6e3a1351bac8355e394da3bd0bf249a5c503
14. 0x3c5462812bd2f841e3d7deefc01555f18262fe5e0d5a7eb155330b7a7cb0388e
15. 0x6f00f0da417f4126951ba8ba9b7962c847e91f5c61364ad9ad47e5f979698a60
16. 0x23cf9bb4337ee8be7fcae368fd69d24c62c11fb45882127b4cd919bb96a19996
17. 0x0e01aa9525097570a6edaf32bfc959de57bf5c24317cf10c0716affea85ca60d
18. 0xa20d48798a34aba12eb9c7297722982d910f06c148f5e27ac59307422964a585
19. 0x9fc354c0ea3efc3f1b6548bb77ea902a50f2c9647647ea61592efce2bd795699

Day root

0xdd77e5e99da32c3f154180d63e3c3e6fe11e896a2c6896412ef6b5c4bcf7e795

Chained

0x23bb4dfd09f55c15ac3962f53578e02c6114d5bfd9bb451cf8794fb6e2817ef4

Published

On Arc Testnet, block 69414147: 0xb2ebd83aafeb765a0ce66e76aefb133ed06606c98038fd56191e2bcd1dcb77b4