Evidence row 1025576

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": "2026-10-29T12:34:26.514978Z",
        "status": "active",
        "statusChangedAt": "2026-10-29T12:34:26.514978Z",
        "updatedAt": "2026-10-29T12:34:26.514978Z"
      }
    },
    "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": "1.9.0",
      "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":"50a553d83970a1c43309c61a732cf630e14c5b4f34e6a52f3af37f0fd391784e","id":1025576,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793279589396337,"prev":1005262,"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 2026-10-29 (242798 rows).

1. 0x89133c7c825aff476231b72ee89a0d977abaefdca7bf6a7ee6b57aa94e80bb3e
2. 0xdd4a992fd969db9ff9d633f79f1124ec2a0e50578abd835d6094e85f8a652093
3. 0x0583cfd4a491deb2d082e91baa1b778b3151093d8f592857a115d407e8fcaebe
4. 0xb476799cb4015ac72933f48c9a1cb26c21a8894c93a53a9fe2a6bf6e2c5aff16
5. 0xfa1802bbb4ef77cda733d80e33da5220f3c686aae9aa40926e6ca891d6757f07
6. 0x8a8c702f26d3952c61df00572f9fa3684773eace98b8fe4d0cb867e31983f6fe
7. 0xbe68c78952fccae7f2cea4ecf1e285b9dd29732c90db3dc7e8c7242ee4699902
8. 0x30ad7cae1c860ad4f90b2a0fcb8132f8e654ffa87783d09fa453b826413e3dc5
9. 0xa2345623a3862e5d8955a50c71f849ecacefae7810a9eb6eaedd954752b1126b
10. 0xde51bd2e419efa27054306c38752f48bc6666e6f131b4a90df344a4d112390ba
11. 0xa6e913c831aadc38ce6d754f84dfe209426bab1739a1687e3f93774c916f87eb
12. 0x91694dabe0e5115ef33bd6f7847592fceb3b65dcf3ce703dad697c5c50c4cbef
13. 0xd519d8cdd088f59ea3d3ee0d8729b8119c50d1c5b73da014b21e94026cb1006c
14. 0x738c5bd29ff2d2f8d7fd631baca705f1f09ba7c5f714efb8c3ec3626affb304a
15. 0xcf94ad18fb19d78b9bda4e21e2e80e6fbf3504f3f83fee3273c11933743525c4
16. 0xe2d603cd6f987214550319ad4fa39952b6098bc5c1b20893b6b80e8d82a79934
17. 0x91f12a2db1e2c1be07cbe4de3981a37a33051a36d3c3eee5a260804add6d1d75
18. 0xd56e61af23709ed9f460471e3c08400c0142ee83e1fd9057e46350d12edf9c07

Day root

0xc050555c6b023f2aefb6536efb9f0760b92c30a0d06c572b7daf63db259ea17c

Chained

0x4cde8bae2042512e1bec11650628f0293556311cc4ea74d99ffddf02b671a7d6

Published

On Arc Testnet, block 69753317: 0x9e85c340732f416e431b111fae72f7624870125f7f379af2732eb6c2ba8cf6a1