Bitcoin, the virtual currency

https://youtu.be/pJoyPhiOz50

Bitcoin is not generally recognized as a proper currency — lacking a home country, central bank or treasury — although its real world use is constantly increasing. Its community of users control and regulate it via the block chain, a shared public ledger on which the entire Bitcoin network relies.

FRED. GARET, KATHERINE LEVY SPENCER / AFP VIDEOGRAPHICS / AFP