Provably Fair

Verify a Bet

Server Seed

Client Seed

Nonce

Game Type

How Provably Fair Works

Before You Bet

We generate a random server seed and show you its SHA-256 hash. This commits us to the outcome before you place your bet — we can't change it afterward.

You Provide Your Seed

You set a client seed (or use the random default). Combined with the server seed and an incrementing nonce, this creates the input for the game result.

Result Generation

The game result is derived from SHA-256(serverSeed + ":" + clientSeed + ":" + nonce). Each game type converts this hash into its specific outcome.

Verification

After rotating your server seed, the previous seed is revealed. You can verify that its hash matches what was shown before, and that the game results were correctly derived.

// Verification formula

serverSeedHash = SHA256(serverSeed)

combinedHash = SHA256(serverSeed + ":" + clientSeed + ":" + nonce)

gameResult = deriveResult(combinedHash, gameType)

Game-Specific Derivation

Crash

First 8 hex chars → integer → crash point with 4% house edge built in

Dice

First 8 hex chars → mod 10001 → divide by 100 for roll (0.00-100.00)

Mines

Hash bytes used to Fisher-Yates shuffle 25 positions for mine placement

Plinko

Each hash byte determines left/right direction at each peg level

Coinflip

First byte mod 2 → 0 = Heads, 1 = Tails

Limbo

Similar to crash — first 8 hex chars determine multiplier threshold

Wheel

Hash → mod total segment weight → determines landing segment

Slots

Sequential hash bytes determine each reel stop position