Centralised cryptocurrency is a digital resource created to be employed as a medium of trade. Additional coins can be found by mining. Anyone may do this if they've access to a computer. Mining requires a large amount of hours and electrical energy, however. A fast computer is also needed, to mine profitably. However, Ripple is a centralised asset, which can't be mined. A finite amount of units were generated by the firm and this limit will never be added to.