Interview with Fred Ehrsam, the co-founder of Coinbase, the largest and in many ways most "legit" start-up in the emerging Bitcoin economy. Coinbase manages Bitcoin wallets and transactions between people who hold the currency. Ehrsam is a former foreign exchange trader at Goldman Sachs who became entranced by the possibilities of Bitcoin, and he speaks elegantly and in great depth about why he believes digital currency will be revolutionary. I'll aim to ask him about Bitcoin's murky founding, its advantages and its shortcomings as currency, how to secure it, its political affinities, and whether it fundamentally changes how we think about money.