What does provably fair mean?

Provably fair is a cryptographic method that lets you verify each game result was random and not manipulated. You can independently check every bet outcome using a server seed, client seed, and nonce.

Which casinos offer provably fair games?

Crypto casinos like Stake, BC.Game, BitStarz, and mBit Casino typically offer provably fair games, especially for their original games like Dice, Plinko, and Crash.

Is provably fair the same as RNG?

No. RNG (Random Number Generator) games are audited by third parties but you can't verify individual results. Provably fair games let you personally verify each outcome using cryptographic proofs.

Can provably fair games be manipulated?

The whole point of provably fair is that manipulation is mathematically impossible without detection. The cryptographic hash system ensures both the casino and player can verify fairness independently.

Last updated: 2026-03-01

Provably Fair Gaming: What It Is & How It Works

Provably fair technology lets you verify that casino games are genuinely random. Here's how the technology works and why it matters.

How Provably Fair Works

Before each game round, the casino creates a server seed (hidden) and shares its encrypted hash with you. You provide a client seed (or one is generated for you). The game outcome is determined by combining both seeds with a nonce (bet counter). After the round, you can reveal the server seed and independently verify the hash matches, proving the result wasn't changed after your bet.

The Verification Process

Casino generates a server seed and shares its SHA-256 hash
You set or receive a client seed
The bet is placed and the outcome calculated using both seeds + nonce
After the bet, you can reveal the server seed
Hash the revealed server seed — if it matches the pre-bet hash, the game was fair
Recalculate the outcome using the seeds to confirm the result

Games That Use Provably Fair

Provably fair technology is most common in crypto casino original games: Dice, Crash (Aviator-style), Plinko, Mines, Limbo, Keno, and Hilo. Some casinos extend it to virtual slots, though traditional slots from providers like Pragmatic Play and NetEnt use standard RNG with third-party auditing instead.

Why It Matters for Players

Complete transparency — no need to trust the casino blindly
Mathematical proof, not just a claim of fairness
Protection against result manipulation
Builds trust between players and crypto casinos
Complements (doesn't replace) regulatory oversight

Frequently Asked Questions

Written by

Sarah van der Merwe

Casino & Betting Experts

Sarah covers blockchain technology and its applications in online gambling for the SA market.