Evidence row 3986669

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": "2026-11-07T21:55:11.660944Z",
        "status": "active",
        "statusChangedAt": "2026-11-07T21:55:11.660944Z",
        "updatedAt": "2026-11-07T21:55:11.660944Z"
      }
    },
    "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": "1.16.5",
      "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":"ce604e7e17bc6c61edf3e81922e6720114ac541ced03db73c87a6d30227e6645","id":3986669,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1794090324510750,"prev":3957906,"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 2026-11-07 (195826 rows).

1. 0xeb2023e6319605201ae4abe13a55ed41fb773ba405daa004120164e555fb2fcc
2. 0x57d711e06dde81edc5e0e351cff620e66768a662810b3e18851aa2a19fdb6e36
3. 0x1e0f2a5b4520a3528a3948de9a28efe4d3cef4160c4f723647b57e056ed39586
4. 0x7e3cd8f13bd80b3802c4539a97bcbf5a31ccc096cd8ef8668f200af79735305b
5. 0xb5c05ab6d233e74210ac24c11a1ebf585fdd458b9cea6f76a19fa8ca4db1dda5
6. 0x9e0fee1ad0241bb602bd64d1f73c239bc2a5d9246bf3ada67b343b9f90e618da
7. 0x89a8a2f89deb6d6fe7617f938402476b70911ea043f74023b75648ccee3044dc
8. 0xf41a17b6153195d0e4d0bcdca877908e2df23eb8661cf8b0b14d9dcd62ad4845
9. 0x3954f56a21528977b7897cdbc19d694f973246693992e2b05a3b19849446ce4d
10. 0x656dbb86678871b345f0d57ce1b529d5f6ab8139e6163ad6cf9e9bdf5369d6e2
11. 0x3ea6d9f3b2fde4e389bf00ac2bb410edfebf9d5dbaa74ca88ebfa3de81dfdba4
12. 0xf5faf2feb8518deb6bbb259e5a3cea89120bd5676282a940c84227e157395da8
13. 0xe79f2ce46cab03ac264319838ae3b783a627edc1ba5fa188c7c509f21c4e4085
14. 0x6f49c61b0121647381a6cf39821f3b65b9e708380eb6ac63924f415c4db07607
15. 0xe840e410ee5ca60b9428cf31ac97ed84879fffbdab20af854208e002351d4fae
16. 0xbb3be27e5da5ccad91ce4674c6eac53275c0832f3885b89533d2be65d38f2fc6
17. 0x9ea7c2ecc6985da4b761b0f9096b7858b3ac8e3e47717c3840537fb2ff31c6df

Day root

0x17da9e85e1b138541355d33543ff34e3503cd3a49d37728fb53643e2a0416a2d

Chained

0xed34bd4af17282643de8cb9591c84d0aa1b39e1e9ae9864941e543f5a15718cb

Published

On Arc Testnet, block 71280839: 0xc3f6784179e0ca32236ba89472473e882a81d03fcc5ce27ca58ded2e01e112aa