What is the project about? rSOL, a decentralized DeFi product produced by StaFi that solves the liquidity problem of staked SOL on Solana mainnet. rSOL token is a synthetic staking derivative issued by StaFi when users stake SOL through the StaFi rSOL App. rSOL tokens are anchored to the staked SOL assets and the corresponding staking rewards. rSOL tokens can be transferred and traded at any time.