Can casinos cheat provably fair systems?

A properly implemented provably fair system is mathematically impossible to cheat. The key is: the server seed hash is shown BEFORE you bet, and the unhashed seed is revealed AFTER. They cannot change the outcome because changing the seed would change the hash.

Why do I need to set my own client seed?

Your client seed is combined with the server seed to generate the result. By setting your own, you ensure the casino cannot predict or manipulate the combined seed. Think of it as adding your own randomness to their randomness.

What if my verification fails?

First, double-check all your inputs - wrong nonce or typos are common. If the data is correct and verification fails, this is a serious red flag. Document everything, contact the casino, and consider reporting to gambling forums/authorities.

Provably Fair Explainer

AI-Powered

Paste provably fair seeds and hashes to get a step-by-step explanation of how to verify game fairness and whether the result is legitimate.

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Optimized for Nigeria Players

This tool works great for players in Nigeria. Results are tailored for your region.

Enter Provably Fair Data

Steps

Gather your seeds

After your bet settles, the casino reveals the server seed. You'll need: the server seed (revealed after bet), client seed (you set this), and nonce (bet number).

Enter the data

Input all the provably fair data into the form. Include the hashed server seed if you saved it from before the bet - this lets us verify the casino didn't change it.

Understand the verification

We'll explain exactly how the result was calculated and whether it matches what should have happened. If something doesn't add up, we'll flag it.

Pro Tips

Always save the hashed server seed BEFORE placing important bets - this is your proof the casino committed to an outcome
Set a custom client seed for additional security - using the default reduces your control over the randomization
The nonce increments with each bet - if you're verifying a specific bet, make sure you have the correct nonce
Different games use different algorithms - crash games, dice, and slots all calculate results differently

Example Provably Fair Data

Game Type: Crash
Server Seed: 7f8a9b2c3d4e5f6a7b8c9d0e1f2a3b4c
Client Seed: MySecretSeed123
Hashed Server Seed: a1b2c3d4e5f6...
Nonce: 42