Evidence row 1249516

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": "2026-10-30T12:20:58.067146Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T12:20:58.067146Z",
        "updatedAt": "2026-10-30T12:20:58.067146Z"
      }
    },
    "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": "1.9.1",
      "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":"a7bff8cebf1c09c1fea5f987ab9170029aef7f5b1011f44697e9ed4a26c4fa01","id":1249516,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793366121448254,"prev":1025576,"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. 0xc231a57510314ae779a61c557f919f7ce408c9ccf919ad1ca8757c199f510653
2. 0x7ca2907fd5c34953408cf9b828acbe4c1c3782d0eac8df5014f8c4186d02d250
3. 0x658e6e304212486d847c5f1ab53ca8d33982ea5e59b0fc92a7cab89b2d5594d0
4. 0xc57559acaec50c3ff1a2066f242bb95b82b096e2f0c5f929b6332bd60be3f2dc
5. 0xc2e1ea2215d1f3798f3b225d72dd85d52c5d8b179e152dcd3de8b37d2d7d03b2
6. 0xc0acfa0641e43b9d65f0bd733cf1d55d5450ed891343036b43bf698624eead4e
7. 0x371c07ff859562c2fca5ddbd370660ff13c35df43d07b6ee892d2f57119a9844
8. 0xd129018362fffb3083bb7a011997d575442950219c9df460cb3b5d3767c70dfe
9. 0x411eb468df38c3e542bae0a551144bcf0d77f0dcb80b22eb9844efbaf050b736
10. 0xdf8429287caafd13f0428c4291747a9380cc5b875e66ac894289bb2b1ffdce4a
11. 0x4e15b963370e957234db95dd689b672eb696273969cea8d4b75007b5fd34c438
12. 0x9fb1119d8b5095fdcdaef00d4f92ce423ad5d224a8ecf628aca8fa9c35c3dc5e
13. 0x471b09add521b98a16ea9fc9d6a9b0d36c3550dc29ba4c83971dbd67d002d009
14. 0x342f35813d736e85ba1881bcb69ecc7b4b96d68e557b8417f1f4ec705ab16ab6
15. 0x9fb4eebd924fd42d4eb61d55691812de0db9242fc9c0dabb65c4054447246797
16. 0x0c59b8770d2782eb535aefbb9b2f6810bab4757f51b37e00f5147713a1de9481
17. 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
18. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861