John McAfee said that $500,000 per 1 Bitcoin at the end of 2020 . Is it true ? Maybe , because we also can see that Bitcoin only $2000 at early 2017 and Bitcoin almost $10000 at end of 2017 . There are also many challenge that Bitcoin face, such the presence of the ICO . But , no one can stop Bitcoin ! Enjoy the ride to the moon guys 📈