Provably fair

Before you bet, we publish the SHA-256 hash of the server seed the round will use. After the round resolves, the seed itself is revealed.

Results come from HMAC-SHA256(serverSeed, "clientSeed:nonce:round"), converted to numbers four bytes at a time. You choose your own client seed, so neither side controls the outcome alone.

If a revealed seed does not hash back to the value published beforehand, the round was tampered with and you can prove it. The verifier runs in your own browser and needs no connection to us.