StaFi, short for Staking Finance, is a decentralised protocol designed to unlock the liquidity of staked assets. Launched in 2020 by a team of blockchain enthusiasts, StaFi aims to resolve the traditional liquidity constraints associated with staking in Proof-of-Stake (PoS) blockchain networks. By using StaFi, users can stake a variety of PoS tokens across different blockchains and receive rTokens in return, which represent the staked assets and their potential rewards. These rTokens are tradable and can participate in DeFi activities, effectively enabling users to earn staking rewards while retaining asset liquidity for other financial activities. Built on Substrate, StaFi leverages the security and interoperability of the Polkadot ecosystem, providing a robust solution for stakers to maximize their returns and enhance their portfolio flexibility.