Indeed cryptocurrency is a sustainable and a reliable measure for a reliable economy in a worldwide setting. When cryptocurrency is adapted in the entire economic industry there will be a decrease in a controlled economy made by printing too much paper money. Anyway this will be possible soon in the future and might be not in our generation remember the history of money it evolves since the start of the human civilization history. We might see it to the evolution of cryptocurrency that would might take thousand of years before it would really be hundred percent adapted.