$BTC Cryptocurrencies are digital assets that function as a medium of exchange using cryptography to secure transactions. They operate in a decentralized manner thanks to blockchain technology, which records each operation in immutable blocks. One of their main advantages is the financial freedom they offer: anyone with internet access can use them. As they grow, they also drive ecosystems such as decentralized finance (DeFi) and blockchain-based games. Although their legality and regulation vary by country, their global impact is undeniable. With each advance, cryptos challenge traditional financial models and present new economic possibilities.