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,
Social currency Social currency Social currency refers to the actual and potential resources from presence in social networks and communities, including both digital and offline. It is, in essence, an action made by a company or stance of being, to which consumers feel a sense of value when associating with your brand, while the humanization of your brand generates loyalty and "word of mouth" virality for the organization. The concept derives from Pierre Bourdieu's social capital theory and relates to increasing one's sense of community, granting access to information and knowledge, helping to form one's identity, and providing status and recognition. In