The Frenzy and Blow-Off Top. The price rises accelerate. There is a rush to buy. The media is all over it. Everyone on social media is crowing. There\u2019s a huge row about whether bitcoin is in a bubble or not. I get invited onto the BBC to talk about it. You get a phonecall from your mate\u2019s nan asking how to buy it. Dean from up the flats starts holding court in the cafe about irresponsible monetary policy at the Federal Reserve. Bitcoin has one of its blow-off tops.See 2013, 2016 and 20