#大而美法案 Bitcoin ($BTC) is a decentralized digital currency introduced by Satoshi Nakamoto in 2009. It is based on blockchain technology and verifies transactions through a peer-to-peer network without the need for banks or third-party intermediaries. The total supply of Bitcoin is capped at 21 million, giving it scarcity, and it is often regarded as "digital gold." Due to its decentralization, resistance to censorship, and convenience for cross-border transfers, it has attracted a large number of investors and institutions. However, significant price volatility, high energy consumption, and regulatory uncertainty are also challenges it faces. Currently, Bitcoin is gradually being recognized in the global financial system, becoming an important digital asset.