Jamie Dimon hasn’t relented in his rhetoric against cryptocurrencies, calling bitcoin and other digital tokens little more than “decentralised Ponzi schemes” in testimony before Congress.

“I’m a major sceptic on crypto tokens … like bitcoin,” Dimon said on 21 September, speaking at a House Financial Services Committee meeting with the leaders of other major banks. “They are decentralised Ponzi schemes, and the notion that it’s good for anybody is unbelievable.”