Digital currency founded DigiCash, an electronic cash company, in Amsterdam to commercialize the ideas in his research. It filed for bankruptcy in 1998. In 1999, Chaum left the company. In 1997, Coca-Cola offered buying from vending machines using mobile payments. After that PayPal emerged in 1998. Other systems followed suit, such as e-gold, but it faced issues because it was used by criminals and was closed by U.S Department of Justice in 2005. In 2008, bitcoin was introduced, which marked the start of digital currencies. Origins of digital currencies date back to the 1990s Dot-com bubble. One of the first was E-gold,
Currency War of 2009–11 a "scapegoat" for the US's failings. China accused the US of waging the currency war and that it has "exercised financial policies characterised as 'economic egoism.'" In April 2011, the "Financial Times" reported that Chinese officials have signalled 2016 as a date when they expect to stop intervening against their currency by buying dollar assets. Brazil is a large economy which has generally allowed their currency to float freely, with the exception of some low level interventions to counter large capital inflows resulting from major stock sales. As a result, since early 2009 her currency has risen substantially against the