A San Francisco doctor takes Bitcoin as payment for medical services.

A Silicon Valley startup is the PayPal of Bitcoin.

All this week, Marketplace Tech is looking at Bitcoin.

You got $95,000 in Bitcoin?

China's central bank officially barred Chinese banks from offering services connected to the virtual, digital currency Bitcoin. The government also issued a new set of regulations for Bitcoin exchanges in China.

Undeterred by Senate hearings, the price of the virtual currency Bitcoin is soaring.

Right now, Bitcoin functions mainly among early Bitcoin adopters – who have pushed the currency’s value to a record level.

A virtual currency like Bitcoin has benefits to its users, including secrecy. Congress wants to understand its advantages and its security concerns.

U.S. regulators are trying to figure out how to handle Bitcoin, a virtual currency back by no government.

A crop of start ups with venture capital backing are trying to make Bitcoin more mainstream and easy to trade.