Checking that a result was fair
Before you bet we commit to a secret seed. After you rotate it, you can recompute every result yourself.
For every game we make ourselves, the result of a bet is computed from three things: a server seed we commit to before you bet (you see its hash), a client seed your browser chose, and a counter that goes up by one with each bet.
You cannot verify a bet while its server seed is still in use, because revealing the seed would reveal every future result. Rotate your seed pair on the Verify page or in Account, then Seeds: the old seed is revealed and a new one takes over.
With the revealed seed, the Verify page recomputes the result in your browser, with no request to us, and tells you whether it matches what was recorded. The Fairness pages show exactly how the bytes become each game's outcome.
Games from outside studios are not provably fair. They are marked, and they show the return the studio declares.