BITROUL is a fantastic Roulette without zero , so that you play head to head against the BITROUL with equal chances .
There is no edge for BITROUL .

BITROUL is a true PROVABLY FAIR roulette .

At the start of the game a "Big number" is randomly drawn .
This "Big number" is kept secret but its Hash (SHA256) , called "Game hash" is public and shown .

Then :
A "client seed" is a number provided by the client , and it is used to calculate the stop number of the roulette .
A "nonce" is a number provided by the computer : its the numeric time when you finally click on SPIN . It is also used to calculate the stop number .

To calculate the stop number , we concatenate BigNumber+ClientSeed+Nonce , then we use its SHA 512 , take the numerical part , and finally the the first pair of numbers between 1 to 36 .
This is the way the Stop number is caluclated .

After the spin of the roulette, the stop number of the roulette and the Big number are revealed . 

Verification . You can verify at the end that the Game hash was really the one used to calculate the STOP number .

It proves that the BITROUL cannot manipulate the Stop number .

Have fun .

For any question : peter (@) bitroul.com .