#XRPETF Ethereum ($ETH) is the second largest cryptocurrency by market cap, created by Vitalik Buterin in 2015. It supports smart contracts and decentralized applications. After switching to Proof-of-Stake, Ethereum became more energy efficient. $ETH is the basis for DeFi, NFT, and many blockchain projects. Its role in the crypto economy is constantly growing, and it is considered the technology of the future.