Stafi is a decentralised platform built on the Polkadot blockchain that enables users to stake their cryptocurrency and earn rewards while maintaining liquidity. The platform's technology allows users to lock their tokens for a fixed period, called a rToken, which can then be traded on secondary markets without forfeiting the staking rewards. The platform's native token, FIS, is used for governance and transaction fees. With its focus on liquidity and flexibility, Stafi is used by investors to earn staking rewards while retaining the ability to trade their tokens. The platform also provides a range of tools and features for developers looking to build decentralised applications on Polkadot.