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,
Reserve currency for a global reserve currency. Nevertheless, at the beginning of the 21st century, gold and crude oil were still priced in dollars, which helps export inflation and has brought complaints about OPEC's policies of managing oil quotas to maintain dollar price stability. In 2018 a new Reserve Currency Backed Token Exchange (RCBTE) rcbt exchange was announced by exchange CEO, John Ossenmacher, the RCBT facilitates issued tokens to be backed by Reserve Currencies. This system of secure digital backed tokens opens the door to a multiple reserve currency system. 17 April 2017. Some have proposed the use of the International Monetary