Normal cryptocurrency is a digital asset created to be used as an item of exchange. New crypto-coins may be added by mining. Any person may do this by using their a computer. Mining requires a large amount of hours and electricity, however. A high-powered computer is also needed, to mine successfully. Conversely, Ripple is a centralised resource, which is unmineable. A finite supply of coins were made by the organisation and this number will not be exceeded.