Commitment hash
Published up front so the reveal can be checked later.
Provably Fair Gaming
Every game outcome is mathematically verifiable and tamper-proof
Interactive walkthrough
See the proof chain react in real time
Change the client seed or nonce below and watch the commitment, HMAC, and outcome update. Same inputs always recreate the same round.
Nonce 7
Each increment creates a brand new round, even with the same seeds. Derived round secret
This is the secret material the verifier recomputes from the same inputs.
Game HMAC
The HMAC is the deterministic fingerprint the game logic reads from.
Sample outcome
A single deterministic roll from the same seeds every time.
Why this matters
Live preview readyIf you can reproduce the same outcome from the revealed data, the result was locked in before the round finished.
How Provably Fair Works
We Generate
Server creates a secret seed and shows you its hash before betting
You Participate
Add your own client seed to influence the game outcome
Game Runs
Result is calculated using both seeds plus a unique nonce
Verify Results
Check the math yourself to ensure complete fairness
Supported Games
All games use cryptographically secure provably fair verification
33 games with full provably fair verification support
RNG Games
Single random number determines outcome
10 games in this group
3 core verification patterns
HMAC → Float → Roll value
HMAC → First byte parity
HMAC → Crash multiplier curve
Dice
HMAC → Float → Roll value Coin Flip
HMAC → First byte parity Crash
HMAC → Crash multiplier curve Limbo
HMAC → Target multiplier Wheel
HMAC → Segment selection Rocket
HMAC → Flight multiplier Roulette
HMAC → Number 0-36 Slots
HMAC → Reel positions Craps
HMAC → Two dice (1-6 each) Liar's Dice
HMAC → Dice set generationWhy Provably Fair Matters
Complete Transparency
Every game outcome can be independently verified using cryptographic proofs
No Trust Required
You don't need to trust us - the math proves fairness automatically
Open Standards
Based on industry-standard cryptographic hash functions (SHA-256/512)
Provably Fair Gaming
Every game outcome is mathematically verifiable and tamper-proof