Bitcoin is a decentralized digital currency, meaning it is not controlled by any government or central bank. Instead, it is managed by a global network of users called the "blockchain." Miners verify transactions and secure the network using computing power, in exchange for Bitcoin rewards. Additionally, developers contribute to improving the open-source software, while large users (whales) control the market through buying and selling. In the end, no one controls Bitcoin alone; it is a collective system governed by code rules and consensus among network participants.