Each day there are about a dozen new crypto-currencies, and maybe more. Among them there are really worthy, improved, which have certain advantages among the rest. Such crypto currencies generate interest. I think that bitcoin is not the time to die, therefore the main strong crypto-currencies will exist for a long time. At the same time, technology does not stand still. More and more people are interested in decentralization and the world of crypto currencies. We should not rule out the possibility that one day a new unique crypto currency will appear on the exchange, which will take first place in all parameters.