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 Wars Currency Wars Currency Wars () by Song Hongbing, also known as The Currency War, is a bestseller in China, reportedly selling over 200,000 copies in addition to an estimated 400,000 unlicensed copies in circulation and is reportedly being read by many senior level government and business leaders in China. Originally published in 2007 the book gained a resurgence in 2009 and is seen as a prominent exponent of a recently emerged genre labeled "economic nationalist" literature. Another bestselling book within this genre is "Unhappy China"; however, unlike this and other books within this genre, "Currency Wars" has been received more