Ether.fi is an un-custodial staking protocol with a distinctive edge over other staking platforms; it grants stakers the autonomy to manage their keys. In Ethereum’s PoS (Proof of Stake) ecosystem, two keys are generated: withdrawal keys and validation keys. The withdrawal key is used to withdraw a user's assets, while the validation key is needed by node operators to validate blocks within a stipulated timeframe, thereby earning validation rewards.