Hifi Finance is an Ethereum-based protocol providing fixed-rate, fixed-term loans. It uses synthetic assets (hTokens) to track underlying assets, enabling borrowers to mint hTokens by depositing collateral, while lenders can exchange USDC for hTokens. Hifi enforces over-collateralization requirements and allows liquidation if collateral value drops. It aims to offer a secure staking environment and a variety of liquid staking token options.