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