A couple of years ago I started reading up about bitcoin, and I put some of what I'd found into Bitcoin - digging deeper.... Whilst what the effect that cryptocurrency will have on the world is interesting I'm finding the potential use of the blockchain (simply put - a distributed pretty much guaranteed trustworthy ledger) more interesting.
Recently I've come across ethereum, which is building its own blockchain for use with smart contracts, such as making sure musicians get paid when you stream their music. Now I find that really interesting.
Sometimes the PR side of such projects isn't too great, but that home page is really good at explaining what it's all about at a superficial level. There are lots of levels below that though.
More another day, including using technology to overcome evil.