Bitcoin: Released onto the Internet by an anonymous, mysterious creator in late 2008, the bitcoin is a peer-to-peer digital currency designed to cut out the middleman—governments, banks, even online money operations like PayPal.
Bitcoins are not just made: they’re mined. In order to unlock new coins, you use your computer’s processing power to correctly guess a cryptographic puzzle. Approximately eight million bitcoins exist today, and to prevent inflation, they will never be allowed to exceed a limit of 21 million. The virtual coins are traded, can be redeemed for hard currency, and are accepted in some places as a form of payment.
Following publicity in 2010, the worth of a bitcoin skyrocketed from a nickel to $30 before plummeting to around $5. The currency has been far more volatile than other forms of money like gold and the U.S. dollar (see chart, above).
What’s next? Because the bitcoin is a decentralized currency, not subject to the control of any bureaucracy, ultimately its buyers and sellers will decide.