A teenager, Erik Finman, got $1,000 from his grandma in 2011.

He used it to buy $BTC , which was $10 each back then, after seeing someone with a bitcoin shirt at a protest. He dropped out of high school at 15, making a deal with his parents that if he made a million dollars by 18, he wouldn't have to go back. He sold $100,000 worth of bitcoin and started an online tutoring service called Botangle. An investor offered to buy his company for either $100,000 or 300 BTC. He chose the BTC, which turned out to be a smart move when bitcoin's value rose. By 17, he was a millionaire. He didn't go to college, instead traveling the world and buying fancy cars. Now, his bitcoin investments have made him very wealthy, and he's involved in cryptocurrency startups and advocacy.