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Provably Fair

Every result is fixed before you bet, and you can check it yourself.

  1. 1Before you bet

    The server creates a secret server seed and shows you its SHA-256 hash. The hash fixes the seed: it cannot be changed later without the hash changing too.

  2. 2Your part

    You have a client seed. It is random at first and you can change it any time, so the result also depends on something only you control.

  3. 3Every bet

    Each bet uses the next number, the nonce (0, 1, 2…). The result comes from HMAC-SHA256 of the server seed with "client seed:nonce:cursor".

  4. 4After you change seeds

    The old server seed is revealed. Check that its hash matches the one you saw, then recompute any past result below.

How each game uses it

Every 4 bytes of the HMAC result make a number from 0 to 1: b0/256 + b1/256² + b2/256³ + b3/256⁴. Games that need several numbers use the next 4 bytes, then the next HMAC (cursor 1, 2…).

  • Dice. Number × 10,000, fraction dropped: the roll from 0.00 to 99.99. You pick the payout; the win chance is RTP ÷ multiplier, shown on the slider.
  • Coinflip. Number × 10,000: below RTP ÷ 2 × 100 your side comes up. The payout is always ×2.
  • Plinko. One number per row: 0.5 or more = right, less = left. The slot pays its multiplier from the table shown on the board.
  • Mines. Mines are placed one by one: each number picks a tile from the ones still free. The board is shown after the round.
  • Rocket Road and CRASH X. One round for everyone: the round seed hash is shown while bets are open, the seed after the crash. Crash point = RTP ÷ (1 − number), with 2 decimals.

Check a result

Fill in the seeds to see the result. Open a bet from your game history to fill them automatically.

Need help with something?

Our support team answers 24/7, usually within minutes.