$BNB Binance Coin (BNB) is a cryptocurrency originally created for the Binance Smart Chain blockchain and currently operates on its own network, Binance Chain. Its primary function is to serve as a means of payment within the Binance Chain ecosystem, but it is also widely used off-chain to facilitate transactions, pay for services, and cover network fees on apps and platforms that accept it. BNB is supported by multiple decentralized applications (dApps) operating on the Binance Smart Chain and is used in DeFi and NFT applications, contributing to its adoption in the cryptocurrency world.