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,
Digital gold currency Cheque, Money Order. Some exchangers also sell and fund pre-paid debit cards to make it easier for their clientele to convert DGC into an easily spendable form of national currency. DGCs are known as private currency as they are not issued by governments. Unlike the credit card industry, digital gold currency issuers generally do not have services to dispute or reverse charges. So, reversing transactions, even in case of a legitimate error, unauthorized use, or failure of a vendor to supply goods is difficult, if not impossible. This means that using digital gold currency is more akin to a cash