--- title: "Provably fair checker: verify Stake, Shuffle & Roobet bets" description: "Recompute provably fair results in your browser for 64 games at 6 crypto casinos: seed pairs, hash chains and VRF proofs, every step shown." url: https://gambatracker.com/verify rendered: 2026-11-11T12:33Z --- # Verify a bet Recompute a provably fair result from its seeds or round hash with the casino's own published algorithm, and check the commitment it showed you before play. 6 casinos, 64 games. Everything runs in your browser; nothing is sent anywhere. What provably fair means 01 ## The casino commits Before you bet it shows you a hash: of a secret server seed, of a round in a pre-made chain, or of a signed random value. A hash cannot be reversed, but it pins the secret down. 02 ## You bet Your client seed and nonce, or the round you joined, go into the result together with the secret. The casino cannot change the secret without breaking the hash it already showed. 03 ## The secret is revealed After the bet (or when you rotate your seed pair) the secret is published. Anyone can hash it, compare it with the commitment, and recompute the result from the casino’s own algorithm. That is what this page does. Passing a check proves the casino did not change the outcome after the bet. It says nothing about the odds: every game here has a house edge, and a fair result is still, on average, a losing one. A failed check usually means a wrong input (nonce, an unrevealed seed, the wrong salt or chain), so the page says what to look at rather than calling anything rigged. Three schemes Seed pair **Stake, Shuffle, Roobet, BC.Game, Gamdom** The casino shows you the hash of a secret server seed before you bet; you add your own client seed and a nonce that counts your bets. Once you rotate the pair, the server seed is revealed and every bet on it can be recomputed. Hash chain **Stake, Shuffle, Roobet, BC.Game, Gamdom** Every round comes from one long chain of hashes made before launch. The casino publishes the last link in advance; hashing a round backwards reaches it, and a salt chosen after the commitment (a Bitcoin or Ethereum block hash) turns each link into a result. VRF proof **Rollbit** Each round's random value is the output of a verifiable random function under the casino's public key. The proof shows the value came from that key and the round's request, and the game outcome is derived from the value. Pick a casino Every game is checked against the casino's own worked examples or verifier code; see each game's vector status. [Stake 13 games](https://gambatracker.com/verify/stake) 11 seed pair 2 hash chain all with published vectors [Open verifiers →](https://gambatracker.com/verify/stake) [Stake's fairness page](https://stake.com/provably-fair/overview) [Shuffle 13 games](https://gambatracker.com/verify/shuffle) 11 seed pair 2 hash chain all with published vectors [Open verifiers →](https://gambatracker.com/verify/shuffle) [Shuffle's fairness page](https://help.shuffle.com/en/collections/9401315-provably-fair) [Roobet 12 games](https://gambatracker.com/verify/roobet) 9 seed pair 3 hash chain vectors from Roobet's own code [Open verifiers →](https://gambatracker.com/verify/roobet) [Roobet's fairness page](https://roobet.com/fair) [BC.Game 12 games](https://gambatracker.com/verify/bcgame) 11 seed pair 1 hash chain 1 with published vectors [Open verifiers →](https://gambatracker.com/verify/bcgame) [BC.Game's fairness page](https://bc.game/help/provably-fair) [Gamdom 9 games](https://gambatracker.com/verify/gamdom) 6 seed pair 3 hash chain vectors from Gamdom's own code [Open verifiers →](https://gambatracker.com/verify/gamdom) [Gamdom's fairness page](https://help.gamdom.com/en/articles/9742227-gamdom-originals) [Rollbit 5 games](https://gambatracker.com/verify/rollbit) 5 vrf proof all with published vectors [Open verifiers →](https://gambatracker.com/verify/rollbit) [Rollbit's fairness page](https://rollbit.com/provably-fair) ## What this does not cover Only originals the casino documents well enough to reproduce are here: no slots, live games or sports. Where a casino's own sources disagree (Stake's limbo scale, BC.Game's two classic dice verifiers, Rollbit's X-Crash edge), the page says so beside the input it affects. Chain commitments some casinos publish only on social media must be pasted in. The site's own figures are described on the [methodology](https://gambatracker.com/methodology) page. 18+ **A fair result is still a result with a house edge.** Passing a check here proves the casino did not change the outcome after the bet was placed. It does not mean the odds favour the player, and no check improves them. Gambling can be harmful. [BeGambleAware](https://www.begambleaware.org/) [Help & limits](https://gambatracker.com/responsible-gambling) How these figures are produced and labelled: https://gambatracker.com/llms.txt