$BNB BNB, originally launched in July 2017 as an ERC-20 token on Ethereum, is now the native token of the BNB Chain (formerly Binance Smart Chain). It was created by Binance, the world's largest cryptocurrency exchange by trading volume, to facilitate various functions within its ecosystem. BNB can be used to pay trading fees on Binance (often at a discounted rate), participate in token sales, and power transactions on the BNB Chain, which supports decentralized applications (dApps), smart contracts, and more.