$ETH Ethereum (ETH) is a decentralized, open-source blockchain system that enables the creation and execution of smart contracts and decentralized applications (dApps). Launched in 2015 by Vitalik Buterin and others, Ethereum extends blockchain technology beyond simple transactions, allowing developers to build applications that run without downtime, fraud, or third-party interference. ETH is the native cryptocurrency of the platform and is used to pay for transaction fees and computational services on the network. Unlike Bitcoin, which primarily functions as digital gold, Ethereum serves as a flexible foundation for decentralized innovation. In 2022, Ethereum transitioned from proof-of-work to proof-of-stake consensus via "The Merge," significantly reducing its energy consumption. With its dynamic ecosystem, Ethereum continues to shape the future of decentralized finance and Web3.