Today on the Brief: John McAfee arrested in Spain BTC addresses added spikes to two-year high A new election-market narrative emerges Our main discussion: The U.K. has banned crypto derivatives.  Just days after the U.S. announced significant action involving BitMEX, the U.K.’s Financial Conduct Authority has made its own move to stop crypto derivatives.  In this episode, NLW breaks down what actually happened, and looks at the reactions from the crypto industry including: Accusations of hypocrisy Skepticism of enforceability  Why it might actually be good for bitcoin