The blockchain has a dark side [News]

In 2009, Satoshi Nakamoto–whoever he or she really is–used a new invention, called the blockchain, to run currency maintenance and payment software over a decentralized, global computer network. What we got was Bitcoin, an unstoppable digital currency. We now know that a blockchain, in its generalized form, can also be used to run any other kind of software imaginable. Once deployed on a blockchain, programs run automatically, they are accessible to anyone with an Internet connection, and they are nearly impervious to governmental controls. Which is to say, they are essentially autonomous. If the word Skynet just floated through your mind, then you're starting to get the picture.