Actually didn't Bitcoin hit 20,000 in 2017?  If he really was from the future he would have taken this into account.  Also right now the price of Bitcoin is $8,200.  Even if it becomes a bull market....12x would be unheard of.  The moment Bitcoin hits $20,000 again you know governments will put their foot down.  BUT if it does hit $100,000 then I will believe in time travel.  HAHA