Winna Provably Fair Verifier
Verify any Winna original from the server seed, client seed and nonce. 9 games, the operator's published HMAC-SHA256 mapping, nothing sent anywhere.
Published 2026-05-21, after our April 2026 audit placed Winna in the VERIFIER_ONLY tier; that audit is superseded for the algorithm question. Same byte stream as Stake (HMAC-SHA256 of clientSeed:nonce:cursor keyed by the server seed, eight uint32 / 2^32 floats per digest) and the same event mapping for the games listed, with two operator differences the verifier applies: Coinflip is float < 0.5 = heads (the opposite of Stake's Flip rule) and the Hilo card table is suit-major from Ace (♠A … ♦K). Dragon Tower is Winna's Pepe Tower, same LEVEL_MAP. Not listed: Slide (hash chain), Plinko Extreme (inverse-transform table), Coin Climber and Blackjack (not implemented here).
Winna games you can verify here
Published 2026-05-21, after our April 2026 audit placed Winna in the VERIFIER_ONLY tier; that audit is superseded for the algorithm question. Same byte stream as Stake (HMAC-SHA256 of clientSeed:nonce:cursor keyed by the server seed, eight uint32 / 2^32 floats per digest) and the same event mapping for the games listed, with two operator differences the verifier applies: Coinflip is float < 0.5 = heads (the opposite of Stake's Flip rule) and the Hilo card table is suit-major from Ace (♠A … ♦K). Dragon Tower is Winna's Pepe Tower, same LEVEL_MAP. Not listed: Slide (hash chain), Plinko Extreme (inverse-transform table), Coin Climber and Blackjack (not implemented here).
Keep what you worked out.
A free account saves your bankroll plans, sessions and the results you run here, on every device. No card, no upsell.
Frequently Asked Questions
Where do I find my Winna seeds?
In the bet details for any bet in your history. The client seed and nonce are visible at once; the unhashed server seed is revealed when you rotate your seed pair on Winna's fairness page.
Which Winna games can be verified from a seed pair?
Dice, Limbo, Mines, Coinflip, Plinko, Hilo, Keno, Pepe Tower, Roulette. Games the operator seeds from a public hash chain, or whose event mapping it has not published, are not listed.
What does a match prove?
That the result you were shown is the one the committed server seed, your client seed and the nonce produce under the published mapping. It does not change the house edge and it cannot predict a future bet.