Summary: What is Bitcoin and why buy it?
Bitcoin (BTC) is the first decentralized cryptocurrency, created in 2009 as a digital money system without intermediaries. Its blockchain technology ensures security and transparency, with a maximum supply of 21 million coins, making it scarce and deflationary (unlike fiat money, which loses value due to inflation). Bitcoin acts as a store of value ("digital gold"), protecting savings during economic crises, and offers financial sovereignty by avoiding censorship or confiscation. Its adoption by institutions (ETFs, companies) and events like the *halving* (which reduces supply) drive its long-term price up. Although it is volatile and faces regulatory challenges, its history of growth and decentralization makes it a strategic bet for diversifying investments. **Buying and holding (HODL)** Bitcoin is an option to preserve wealth in the digital age, especially in a world with inflationary monetary policies.