$ETH Ethereum (ETH) is a decentralized blockchain platform that enables developers to build and deploy smart contracts and decentralized applications (dApps). Launched in 2015 by Vitalik Buterin and others, Ethereum introduced the concept of programmable money, allowing for complex transactions and agreements without intermediaries. The platform uses Ether (ETH) as its native cryptocurrency, which is required for transaction fees and computational services. Ethereum's flexibility has fostered a vibrant ecosystem, including decentralized finance (DeFi) projects, non-fungible tokens (NFTs), and more. Ethereum transitioned to a proof-of-stake consensus mechanism with the Ethereum 2.0 upgrade, aiming to improve scalability and reduce energy consumption, enhancing its sustainability.