$SOL Ethereum (ETH) is a popular cryptocurrency and blockchain platform that allows people to create and run applications without needing a central authority. It was created in 2015 by Vitalik Buterin and a team of developers. Unlike Bitcoin, which is mainly used for sending and receiving money, Ethereum can do much more. It supports smart contracts—programs that run automatically when conditions are met. This feature makes Ethereum useful for creating games, financial apps, and NFTs (digital items). Ethereum recently upgraded to a new system called proof-of-stake, which uses less energy and makes the network faster and safer. As one of the most widely used blockchain platforms, Ethereum plays a big role in the future of digital technology.