Cryptocurrency or crypto is a digital currency that uses blockchain technology to ensure the security and transparency of transactions. One of the most well-known examples is Bitcoin. Unlike conventional money, crypto is not controlled by banks or governments, but by a decentralized network. This makes transactions faster and global. However, crypto also carries high risks because its prices are highly volatile. In addition to being a means of payment, crypto is often used as an investment instrument. As technology advances, the use of crypto is becoming more widespread, including in digital finance, NFTs, and decentralized applications (DeFi