$BTC Cryptocurrency is a form of digital currency that operates independently of central banks and governments. Built on a technology called blockchain, it uses a decentralized public ledger to securely record and verify transactions across a vast network of computers. This structure ensures transparency and resistance to censorship.

Bitcoin, the first cryptocurrency, introduced this peer-to-peer electronic cash system. Today, thousands of cryptocurrencies exist, among which Ethereum expands capabilities through 'smart contracts.' These programmable contracts support emerging fields such as Decentralized Finance (DeFi) and Non-Fungible Tokens (NFTs).