There are three conventional ways to invest in Ethereum. 1. The American Way: Through Coinbase. Coinbase is a prominent digital exchange in the U.S. All you have to do is create an account, add Cryptocurrency Vs Digital Currency – How Virtual Money Works? Cryptocurrency is a subset of digital currency. Think about it this way: cryptocurrency is a type of digital currency. Digital currency is a general, universal term for all forms of intangible monies, while cryptocurrency is a specific type of digital currency whose unique angle and appeal is privacy, decentralization, security and encryption.