$ETH Ethereum (ETH) is a decentralized, open-source blockchain platform that enables smart contracts and decentralized applications (dApps). Launched in 2015 by Vitalik Buterin and others, Ethereum introduced a more versatile use of blockchain technology beyond just cryptocurrency. ETH, its native token, is used to pay for transactions and computational services on the network. In 2022, Ethereum transitioned from proof-of-work to proof-of-stake through "The Merge," significantly reducing its energy consumption. Ethereum powers a large ecosystem of DeFi projects, NFTs, and Web3 innovations. Its adaptability, developer community, and real-world applications make it a cornerstone of the blockchain and crypto space.