EtherFi (ETHFI) is a decentralized staking protocol on the Ethereum blockchain that allows users to stake ETH while retaining control over their assets. It uses the eETH token as a liquid staking derivative, which can be utilized within the DeFi ecosystem. Founded by Mike Silagadze, EtherFi emphasizes decentralization, security, and innovative staking solutions, including NFT-based validator management.