$ETH ETH, or Ethereum, is a decentralized, open-source blockchain platform that enables smart contracts and decentralized applications (dApps). Ether (ETH) is the native cryptocurrency of the Ethereum network, used for transactions, gas fees, and various operations within the ecosystem. Ethereum was designed to go beyond just being a digital currency like Bitcoin by providing a platform where developers can create and deploy their own blockchain-based applications. Ethereum plays a key role in the world of decentralized finance (DeFi), NFTs, and Web3 technology, offering innovative solutions in sectors like finance, gaming, and digital art.