Hifi is a decentralized finance protocol that allows people to lend and borrow crypto at a fixed interest rate.

Hifi is made up of decentralized interest rate markets that mature on specific dates. Hifi markets use an Automated Market Maker model, in which users supply tokens to “liquidity pools” and an algorithm sets the interest rate based on supply and demand.

Users supply liquidity, borrow, or lend into any of the active markets. Borrower’s pay a fixed interest rate to lenders without needing to negotiate terms like maturity, interest rate, or collateral. By supplying tokens to liquidity pools users can earn rewards while enabling peer-to-peer lending and borrowing.

Hifi Governance is the community organized process for managing the Lending Protocol. HIFI is an ERC-20 token that gives its owner the ability to delegate voting rights to any address, including their own. The delegate's voting rights are automatically adjusted when the owner's token balance changes. Hifi Governance enables the community to propose, vote on, and implement changes via the administrative functions of the Hifi Protocol. Proposals can change system parameters, support new markets, add entirely new collateral types, or deploy resources towards specific causes.

Hifi was originally known as Mainframe when it launched in Nov. 2017. Mainframe began as a decentralized communications layer for Web3 but pivoted to Decentralized Finance and rebranded to Hifi in early 2020.