Cryptocurrency A cryptocurrency is a digital or virtual currency that uses cryptography and is difficult to counterfeit because of this security feature. After creating an account, users can post requests to buy or sell bitcoin, including information about payment methods and price. If you feel comfortable trading on Coinbase and want to step up your trading volume, you may be ready to switch from Coinbase to Coinbase Pro. P2P Exchanges: Unlike decentralized exchanges, which match up buyers and sellers anonymously and facilitate all aspects of the transaction, there are some peer-to-peer P2P exchange services which provide a more direct connection between users. Mad Money.