El Salvador's president is planning to make his country the first to accept Bitcoin as legal tender. But as some countries embrace cryptocurrencies, others are cracking down because of its use by criminal gangs.
So, what does the future hold for digital money?
Presenter: Sohail Rahman; Guests: Thibault Schrepel - Assistant Professor in Economic Law, Utrecht University; Delaram Kahrobaei - Chair of Cyber Security in the Department of Computer Science, University of York; John Biggs - Journalist and entrepreneur