Verify Round Fairness

Every round is provably fair. Enter the round details below to independently verify the crash point was pre-determined.

Server Seed (revealed after round)

Server Seed Hash (published before round)

Client Seed

Nonce

How Provably Fair Works

1. Before the round

The server generates a random seed and publishes its SHA-256 hash. This commits the server to a specific outcome before any bets are placed.

2. During the round

Players place bets. The crash point is already determined but hidden. Players can cash out at any time before the crash.

3. After the round

The server reveals the original seed. Anyone can verify that: (a) the seed hashes to the pre-published hash, and (b) the crash point is correctly derived from HMAC-SHA256(serverSeed, clientSeed:nonce).

4. Why this is fair

The server cannot change the outcome after seeing bets (commitment via hash). The crash point is deterministically derived from seeds, so anyone can independently verify every round.