$ETH Ethereum ($ETH) is the second-largest cryptocurrency by market capitalization, known for its powerful smart contract capabilities and decentralized applications (dApps). Unlike Bitcoin, which focuses on peer-to-peer transactions, Ethereum provides a platform for developers to build decentralized services across finance, gaming, and more. Its recent upgrade to Ethereum 2.0, transitioning from proof-of-work to proof-of-stake, aims to improve scalability, reduce energy consumption, and enhance network security. As the backbone of DeFi and NFTs, $ETH plays a critical role in the crypto ecosystem. Market sentiment around Ethereum is influenced by tech upgrades, regulatory news, and adoption trends across Web3 platforms.