What is Provably Fair Gaming? — Verified Fairness Explained

The problem with traditional casinos

At a regular online casino, you trust that the random number generator (RNG) is fair because a third party audited it. You can't check individual results yourself. The audit says "this RNG is fair on average" — but you have no way to verify any specific spin or hand.

How provably fair works

Provably fair games use cryptography to let you verify every single result. Here's the process:

### Before the round 1. The casino generates a random server seed 2. It creates a hash of that seed (a one-way fingerprint) and shows it to you 3. You can also provide your own client seed

### During the round The game result is calculated by combining the server seed, your client seed, and a nonce (the round number). This combination determines the outcome — roll, crash point, card dealt, etc.

### After the round 1. The casino reveals the original server seed 2. You hash it yourself using any SHA-256 tool 3. If your hash matches the one shown before the round, the seed wasn't changed 4. You can replay the calculation: server seed + client seed + nonce = result

Why this matters

The casino commits to the result before you play. If it changes the seed after seeing your bet, the hash won't match. This makes cheating mathematically detectable.

Which games are provably fair?

Provably fair works best with simple, single-outcome games: - Dice — roll above or below a target number - Crash — a multiplier rises until it crashes; you cash out before it does - Plinko — ball drops through pegs to a prize slot - Mines — uncover tiles without hitting mines - Limbo — guess if the result will be above your target

Traditional slots and live dealer games are NOT provably fair. They use standard RNG or physical equipment.

How to check

Most provably fair casinos have a "Verify" button next to each bet in your history. Click it and you'll see the server seed, client seed, nonce, and a tool to recalculate the result.

You can also use independent verification tools. The calculation is standard — if the casino's tool and an independent tool give the same result, the game was fair.