Evidence row 1243151

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://fitssey.usefulapi.io/mcp"
    ],
    [
      "web",
      "https://usefulapi.io/fitssey/"
    ]
  ],
  "name": "Fitssey MCP by usefulapi",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-10-30T11:13:16.966041Z",
        "status": "active",
        "statusChangedAt": "2026-10-30T11:13:16.966041Z",
        "updatedAt": "2026-10-30T11:13:16.966041Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "description": "Read Fitssey schedules, class capacity, stock, pass pricing, sales and attendance reports.",
      "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/fitssey",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://fitssey.usefulapi.io/mcp"
        }
      ],
      "repository": {
        "source": "github",
        "subfolder": "servers/fitssey",
        "url": "https://github.com/m190/usefulapi-mcp"
      },
      "title": "Fitssey MCP by usefulapi",
      "version": "1.0.0",
      "websiteUrl": "https://usefulapi.io/fitssey/"
    }
  },
  "source": "mcp_registry",
  "summary": "Read Fitssey schedules, class capacity, stock, pass pricing, sales and attendance reports."
}

What the leaf hashes

{"body":"901479da8248c2be8420bd58f10e5b4f2fd7d0f592ad5c77dddf6d78a7fb5f3a","id":1243151,"kind":"listing","method":"sync.mcp_registry/1","observed_us":1793358918693924,"prev":null,"subject":"mcp_registry:io.usefulapi/fitssey","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. 0x9d3e63f9ec0379c9265836e0e0d109ac0e887b391139ec2f4c3caf337add3724
2. 0x812e689331cad0f47a30a268e885e02a4968c693d52013c8cac917e8a5ec372c
3. 0xb7e6dacb552a4dd981e29e6bac8b422c959af14f84ababf47830ee4c6fc0b009
4. 0x8c164125b6144e65e77d1555d12b81e067c1e7e9378ccc67a35c5869eab781e2
5. 0xa86538caaf9862361aa5709ca18b407a5f675591ed9227fba9f1682b84e4d0c4
6. 0x545e60b048f2eec21499846cd2c0ab7024ccfc8f8109ac0b3cbbc97dab92f992
7. 0xb76e587d7e44aa2ec438df4c50f8f2e9d8f97739790661c8eccf610d6e675027
8. 0x1e204d8517d32f8c64c680c19e716abeaa05175db0a9b2befb455b7ea51b013d
9. 0x867317ea8ff25ebe3c59947f3b18b89c91a62a3dddbff339952ba994387e9825
10. 0x82e22b328af00dd3bf6560aadcf5052196b47d8d5c860d8ca9883ca90af667bb
11. 0xde70a2ccaa80cc0239ec3f715e1fc13f26b5ddcfab00063a85ee6705513e5b58
12. 0xdedf30b66ee512346cf034daebce53fdbd82fa50d1fd252211d1926d97098963
13. 0xd39f7d64cb3206788e8e31ad1bab3700ff64ebd64c54c91e909d88aa713d003e
14. 0x1eeab2b7eb6c0e44e79a2d3d5d5f63d9c0f269f286347cee11c002d3e7c1c75b
15. 0x11b43ed362a2fd4976e11eceb94ee4b7edbaf6823474ee1c36489f8f0a0496c4
16. 0x835211170e79bdce1a823ec914e3532e128f77751e9074286da35091b0200284
17. 0x61ef83255d34604cb052882568ca1d1386ac3cfb8284509715bc1734cff77831
18. 0x0c43c73b62a5d49ee1444b5dc4195fc5b16b141d3f4458e2e9fbd5fd6ecb367d

Day root

0x0826c7ad6039e06a2360ca0a4a3a4fe7f2626c6dc19f71a37599386f78b39875

Chained

0x36b4c8a1063758f0b8765fa1bdf75fa92fb543cc183add3e261880ee2bd1f822

Published

On Arc Testnet, block 69923247: 0x8704744146c6967c8abc9e9a99de4db7283b29e840922ea83a69b6fe776e6861