$BNB BNB (Binance Coin) is the native cryptocurrency of the Binance ecosystem, originally launched in 2017 as an ERC-20 token on the Ethereum blockchain. It later migrated to Binance’s own blockchain, Binance Chain, and now operates on the BNB Smart Chain as well. BNB is used to pay trading fees on Binance at discounted rates, participate in token sales, and power decentralized applications (dApps). It also plays a key role in Binance's token burn mechanism, which reduces supply and potentially increases value over time. As one of the top cryptocurrencies, BNB supports both centralized and decentralized functions within the Binance ecosystem.