The BB token serves multiple critical functions within the BounceBit ecosystem. Primarily, it is used for staking in the dual-token Proof-of-Stake (PoS) mechanism, alongside Bitcoin (BTC), to secure the network. Validators stake $BB or BBTC (Bitcoin-backed tokens) to participate, earning rewards while ensuring network integrity. Additionally, $BB acts as the denomination for gas fees, facilitating transactions and smart contract executions on the fully EVM-compatible chain.