Verify a round

Every result is generated from a server seed (locked in by its hash before you play), your client seed and a round counter called the nonce. After you rotate seeds in a game (⚖ Fair → Rotate & reveal), paste them here to reproduce any round yourself.

How it works

  1. Before you play, the server picks a secret server seed and shows you only its SHA-256 hash, so it can’t be changed afterwards.
  2. Each round uses HMAC_SHA256(server_seed, "client_seed:nonce:cursor"). Every 4 bytes become a number between 0 and 1, and those numbers decide the outcome.
  3. You can set your own client seed at any time. When you rotate, the old server seed is revealed so every past round can be checked here.

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