Provably Fair
Every result is fixed by seeds you can check. Cobalt uses the same algorithms Stake publishes, verified against results from Stake’s own calculator.
Before you bet, you see a SHA-256 hash of the server seed. You choose the client seed. Each bet uses the next nonce (0, 1, 2, …).
Because the hash is committed first, the server seed can’t change after you bet. When you rotate your seed pair, the old server seed is revealed and you can recompute every result it produced, in your browser, with the calculator tab.
The next server seed’s hash is shown in advance too, so the seed you get after rotating was also fixed before you chose your new client seed.