Its look like sites is new and i never heard about this site before. May be its legit but its really tough to make $50000 using $300 only within one year. Its my point of view. What chart did you shared and i didn't get any information from there. Whatever i always believe crypto trading always like forex trading and always it has some time to collect. So if its real way than i think its tough to make $50k using $300 because if its about trading, its take so much time to increase.
As i know crypto currencies fall after 2017 December and i didn't see much movement there. I was purchased some ETH and i get some profit. Because i always read Crypto Currency News
before start any trade.