币界网报道:Bitcoin and the U.S. dollar differ significantly in their underlying principles and functionalities. Unlike the dollar, which is issued and regulated by the Federal Reserve, Bitcoin operates on a decentralized blockchain network without central authority control. While the dollar's supply can be adjusted by monetary policy, Bitcoin has a fixed cap of 21 million coins, making it inherently deflationary. Additionally, Bitcoin transactions are pseudonymous and irreversible, contrasting with the dollar's traceable and reversible banking system. These differences highlight Bitcoin's role as a decentralized digital asset versus the dollar's government-backed fiat currency status.