Guide
How Provably Fair Works
Learn server seeds, client seeds, nonces, commitments, and how to verify that a round result was not altered after the fact.
~8 min readUpdated 2026-08-06
Commitment Scheme
A typical flow: the server commits to a secret server seed by publishing its hash. You contribute a client seed. A nonce increments each bet. The combination deterministically maps to the game outcome.
After rotating seeds, the raw server seed is revealed so you can confirm the earlier hash and recompute outcomes.
What Verification Proves
Verification shows the outcome matched the committed seeds. It does not prove a game is +EV, nor that a platform is financially safe.
Common Mistakes
Changing client seeds for “luck” does not improve RTP.
Failing to verify the hash of a revealed server seed misses the point of the commitment.
Frequently asked questions
Parent pages
Sibling guides
- What Are Duel Originals?A clear definition of Duel Originals: in-house, fast-round games with transparent parameters, published RTP targets, and provably fair verification.
- Understanding RTPReturn to Player explained without marketing fluff: long-run average, sample variance, and how to read published percentages.
- House Edge ExplainedHow house edge relates to RTP, why it compounds with wager volume, and how to estimate expected loss.
- Expected ValueEV as the probability-weighted average outcome — the bridge between RTP tables and real wagering decisions.
- Variance ExplainedWhy identical RTP games produce different session shapes, drawdowns, and emotional experiences.
- Bankroll ManagementPractical bankroll rules for fast Originals: session caps, stake fractions, and stop conditions that survive variance.
- Random Number GeneratorsHow RNGs and seed-derived randomness power Originals, and what “random” does and does not mean for players.
- Best Duel OriginalsA criteria-based shortlist — by learning value, RTP transparency, and variance profile — not by hype.
- Fastest GamesWhich Originals resolve quickest, and why speed increases bankroll throughput risk.
- Highest RTP GamesA comparative look at Originals with the strongest advertised return profiles — with caveats about configuration.
Related guides
- Random Number GeneratorsHow RNGs and seed-derived randomness power Originals, and what “random” does and does not mean for players.
- What Are Duel Originals?A clear definition of Duel Originals: in-house, fast-round games with transparent parameters, published RTP targets, and provably fair verification.
- Understanding RTPReturn to Player explained without marketing fluff: long-run average, sample variance, and how to read published percentages.
- House Edge ExplainedHow house edge relates to RTP, why it compounds with wager volume, and how to estimate expected loss.
- Expected ValueEV as the probability-weighted average outcome — the bridge between RTP tables and real wagering decisions.