Provably Fair Casinos: Verify Every Result On-Chain

Key takeaways

• Math you can check. Provably fair games publish a hashed seed before each round and reveal it after, so you can verify the result was fixed in advance.
• It applies to originals. Crash, dice, mines, plinko, limbo and hi-lo are the games that carry true provable fairness.
• Slots are different. Third-party slots rely on RNG certification, not a seed you can check, so provably fair mainly means the in-house originals.
• Crypto-native. The feature exists because of crypto, no fiat casino offers it.

How provable fairness works

Before a round the site commits to a server seed by publishing its hash. After the round it reveals the seed, and you combine it with your client seed to recompute the outcome. If it matches, the result could not have been altered once your bet was placed. It is the strongest fairness guarantee in online gambling. Our crash, dice and plinko guides explain it per game.

Best provably fair casinos

Among the casinos we review, Stake, Roobet, Gamdom, Rollbit, Shuffle, Duelbits and Betfury run in-house provably fair originals. See our crypto casinos list for the wider picture.

FAQ

What does provably fair mean?

You can cryptographically verify each result was set before you bet, using a published seed pair, so the outcome cannot be manipulated.

Are slots provably fair?

Usually not. Third-party slots rely on RNG certification; provable fairness applies to in-house originals like crash and dice.