$ETH Ethereum ($ETH) is the second-largest cryptocurrency by market cap and a pioneer in smart contract technology. Launched in 2015, it enables developers to build decentralized applications (dApps) on its blockchain. Unlike Bitcoin, which focuses on peer-to-peer payments, Ethereum supports NFTs, DeFi platforms, and DAOs. With the transition to Ethereum 2.0 and Proof of Stake, it’s now more energy-efficient and scalable. $ETH is essential for gas fees and serves as a backbone for Web3 innovation. Its strong developer community, widespread adoption, and continuous upgrades make Ethereum a critical asset in the evolving digital economy and blockchain ecosystem.