Locked
Before the deal, the deck’s seed is hashed and the fingerprint is published to the table.
Provable fairness
Every deck, on the record.
Most poker apps ask you to trust the shuffle. Polaris lets you check it, hand by hand.
Dealt
Cards come off that exact deck. Nobody, including us, can change it mid-hand.
Revealed
After the hand, the seed is released. Anyone can re-shuffle it and match the fingerprint.
Try it
Re-shuffle a hand in your browser.
This runs entirely on your device. Nothing you enter is sent anywhere except to fetch the hand’s sealed record.
Verify a hand
Enter the hand ID from your hand history. Your browser re-shuffles the revealed seed and checks it against the fingerprint published before the deal.
Try a sample hand:
Sealed hand records
Raw data you can hold.
Download the actual sealed record of any hand you played, from your hand history on desktop or phone. Each record is chained to the one before it, so a change anywhere would show. Replay it in the app or check it with your own tools.
The generator
A shuffle built to be tested.
Decks come from an HMAC-SHA-256 generator with 256-bit seeds. We ran 100 million shuffles through statistical testing and publish the full results.