Question 1

What is provably fair?

Accepted Answer

Provably fair is a cryptographic system that lets players independently verify casino game results. The casino commits to a server seed hash before the game, the player provides a client seed, and after the game the server seed is revealed so anyone can verify the outcome was fair.

Question 2

How does provably fair verification work?

Accepted Answer

Verification uses HMAC-SHA256: the server seed, client seed, and nonce are combined cryptographically to produce a deterministic result. After the server seed is revealed, anyone can recompute the exact same result, proving the casino did not tamper with the outcome.

Question 3

What casino games can I verify?

Accepted Answer

WITS.GG supports verification for 12 casino games: Dice, Crash, Limbo, Hilo, Keno, Mines, Plinko, Wheel, Coinflip, Tower, Roulette, and Blackjack. All use the same HMAC-SHA256 algorithm with game-specific result mapping.

Question 4

Is verification done on the server?

Accepted Answer

No. All verification computations happen 100% client-side in your browser. Your seeds are never sent to any server. This ensures complete privacy and trustlessness.

Question 5

What is hash chain verification?

Accepted Answer

Hash chain verification proves that a casino pre-generated a sequence of server seeds honestly. Each seed in the chain is the SHA-256 hash of the next seed. By revealing the final seed, you can verify the entire chain was committed upfront and not manipulated during gameplay.

Question 6

Can I verify multiple bets at once?

Accepted Answer

Yes. WITS.GG batch verification lets you verify up to 1,000 consecutive nonces at once. This is useful for checking a session of bets to ensure every single result was provably fair.

Question 7

What is cross-game verification?

Accepted Answer

Cross-game verification uses the same server seed, client seed, and nonce to generate results for all 12 supported games simultaneously. This demonstrates that the same HMAC-SHA256 foundation powers every game — different game logic, same cryptographic fairness.