Bitcoin (BTC-USD) is a virtual currency that’s used as an investment and a form of payment for goods and services. It’s known for its volatility, so it’s important to understand how bitcoin works. Here’s what you need to know so you can make informed, risk-aware decisions about buying and using bitcoin. Bitcoin is a type of cryptocurrency, which is a currency that exists only in digital form and operates without government or banking oversight. By comparison, the U.S. dollar, the EU euro, the Canadian dollar, and other national currencies have paper versions and are issued by their respective governments. Bitcoin ... (full story)