Try again later. Commercial use of bitcoin is currently small compared to its use by speculators, which has fueled price volatility. We also discuss managing your emotions and risks and highlight the benefits of high-speed and fair trading through DueDEX. Signing up is free, and I recommend it! We Sent You a Link Did you get it? Payments work peer-to-peer without a central repository or single administrator, which has led the US Treasury to call bitcoin a decentralized virtual currency. In China, buying bitcoins with yuan is subject to restrictions, and bitcoin exchanges are not allowed to hold bank accounts.