pointbiz,
would you add wallet creation using coin.

To create a Bitcoin private key you only need one coin which you roll 256 times. Stopping each time to record the value of the coin. When recording the values follow these rules: head (of a coin) = 0, tail (of a coin) = 1. By doing this you are recording the big random number, your private key, in B2 or base 2 format.