A really interesting project to check out if you haven't heard of it is the Brave project. It's got a really interesting concept and they actually have a functioning product that can be downloaded and used right now, not to mention the founder of the company is Brenden Eich who not only created javascript but co-founded Mozilla. It's definitely worth checking out, they do a really great job of explaining what a crypto-currency can be: https://basicattentiontoken.org/