BounceBit is a protocol that builds a restaking infrastructure for Bitcoin. It uses a Dual-Token Proof of Stake (PoS) consensus mechanism that requires validators to stake BB (BounceBit's native token) and/or BBTC (Bitcoin staked on the BounceBit network). The purpose is to create a symbiotic relationship between BounceBit native tokens and Bitcoin to build a robust and resilient network.