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 symbol Currency symbol A currency symbol is a graphic symbol used as a shorthand for a currency's name, especially in reference to amounts of money. Although several former currency symbols were rendered obsolete by the adoption of the euro, having a new and unique currency symbol implementation of which requires the adoption of new Unicode and type formats has now become a status symbol for international currencies. The European Commission considers the global recognition of the euro sign part of its success. In 2009, India launched a public competition to replace the ₨ ligature it shared with neighbouring countries. It finalised