BNB Chain, formerly known as Binance Smart Chain, is a high-performance blockchain developed by Binance to support smart contracts and decentralized applications (dApps). It features fast block times, low transaction fees, and compatibility with the Ethereum Virtual Machine (EVM), enabling seamless cross-chain interactions and interoperability. Unique aspects include its dual-chain architecture, which combines the high throughput of Binance Chain with the smart contract functionality of BNB Chain.