$BNB BNB (Binance Coin) is the native cryptocurrency of the Binance ecosystem, originally launched as an ERC-20 token before migrating to Binance’s own blockchain, BNB Chain. It is used for trading fee discounts, transaction fees, and various DeFi applications. BNB also powers Binance Smart Chain (BSC), enabling smart contracts, staking, and decentralized applications (DApps). Its utility and growing adoption make it a key asset in the crypto space.