$BTC Bitcoin ($BTC) is the world's first decentralized cryptocurrency, released by Satoshi Nakamoto in 2009. It enables peer-to-peer transactions through blockchain technology without the need for intermediaries, featuring characteristics such as censorship resistance, transparency, and security. The total supply of Bitcoin is capped at 21 million, earning it the title of "digital gold." Due to its scarcity and trust mechanism, it is regarded by some investors as a store of value, and it is also widely used for speculation because of its extreme price volatility. With the development of global compliance policies, Bitcoin is gradually transitioning from a grey asset to a compliant one, impacting the global financial landscape.