Over 2017, bitcoin saw a 2200% run-up in value -- but it has been a volatile ride. This week, it plunged 34 percent in a matter of 3 days. Aside from the recent mania, the underlying blockchain technology has attracted interest from financial institutions and investors. Fintech experts Rob Morgan and John Collins discuss what bankers need to know about bitcoin and blockchain, including the growth and use of virtual currencies, blockchain use cases in the banking world and real-world deployments at banks.