Provably Fair Verification
Verify that your game was fair using blockchain-committed seeds.
Game Type
Shuffle Version
How Provably Fair Works
1. Pre-Game Commitment
Before you place your bet, we generate a server seed and commit its SHA-256 hash to the Zcash blockchain. This commitment is immutable and timestamped.
2. Your Contribution
You provide a client seed (or we generate one for you). This ensures we cannot predict the outcome, as the final result depends on your input.
3. Game Outcome
The deck is shuffled using SHA256(serverSeed:clientSeed:nonce). The nonce increments each game, ensuring uniqueness even with the same seeds.
4. Verification
Legacy games reveal immediately after completion. Session-mode games reveal when you rotate seed. After reveal, you can verify hash, on-chain commitment, and outcome replay.