Ethereum (ETH) is a decentralized, open-source blockchain platform renowned for its smart contract functionality. Unlike Bitcoin, it's not just a digital currency; it's a programmable blockchain enabling developers to build and deploy decentralized applications (dApps), including those in Decentralized Finance (DeFi) and Non-Fungible Tokens (NFTs). Its native cryptocurrency, Ether (ETH), fuels transactions and computational services on the network. Ethereum's transition to Proof-of-Stake (ETH 2.0) aims to improve scalability and energy efficiency. With a current market capitalization of around $330-$340 billion, ETH remains the second-largest cryptocurrency.