http://money.cnn.com/2013/05/18/investing/winklevoss-bitcoin/index.html?hpt=hp_t3The brothers are betting that the cyber currency can turn them from millionaires into billionaires. They've invested in buying the coins directly (they told the New York Times that they began "dabbling" last summer, when prices were in the single digits), and this week, they disclosed their first Bitcoin venture investment: A stake in New York-based payment processor BitInstant.
So when a bitcoin-focused startup takes on venture capital cash, how does it do it: Traditional money or actual bitcoins?
"American dollars," says David Azar, a private investor who participated in the round. "Only American dollars."