Q: What's a bitcoin?
A: Bitcoin is an online currency that allows people to make one-to-one transactions, buy goods and services and exchange money across borders without involving banks, credit card issuers or other third parties. As a result, this exotic new form of money has become popular with libertarians as well as tech enthusiasts, speculators - and criminals. Bitcoins are basically lines of computer code that are digitally signed each time they travel from one owner to the next.
Q: Who's behind the currency?
A: It's a mystery. Bitcoin was launched in 2009 by a person or group of people operating under the name Satoshi Nakamoto and then adopted by a small clutch of enthusiasts. Nakamoto dropped off the map as bitcoin began to attract widespread attention, but proponents say that doesn't matter; the currency obeys its own, internal logic.
