Binance Smart Chain is an innovative solution to bring programmability and interoperability to Binance Chain. Binance Smart Chain relies on a system of 21 validators with Proof of Staked Authority (PoSA) consensus that can support short block time and lower fees. The most bonded validator candidates of staking will become validators and produce blocks. The double-sign detection and other slashing logic guarantee security, stability, and chain finality. Binance Smart Chain is fully compatible with the existing Ethereum ecosystem. It natively supports cross-chain interoperability, allowing users to complete cross-chain transfers and exchange information quickly. Assets of both blockchains could be traded on Binance DEX. Users can not only enjoy Binance DEX’s high-performance matching engine, but they’d also be able to do the independent development on Binance Smart Chain.