Provably fair poker

At Bullets Poker, every hand's shuffle can be checked after the hand. The game runs on the Internet Computer, and each deck comes from on-chain randomness.

Play Texas Hold'em at Bullets Poker

How it works

1. Before the first card is dealt, the game records a commitment: a fingerprint of the secret seed that decides the deck.
2. The hand is dealt and played from that deck.
3. About 24 hours later, the seed is revealed to the players who were dealt in.
4. You can check that the seed matches the commitment, and that it produces exactly the cards that were dealt.

What this shows

The shuffle can't have been swapped after the commitment without that being detectable.

What it doesn't show

It isn't proof against every kind of cheating, and you still have to trust some things:

• The game holds the seed and the deck while a hand is played, so cards aren't secret from the canister.
• You're relying on the game's code, the Internet Computer network that runs it, and its source of randomness.
• Collusion between players isn't something a shuffle check can detect. Players can report it.

Check it yourself

You can verify your own hands in the app, and export a hand's evidence to check it independently. The protocol specification and threat model are public.