BNB (Binance Coin) is the native cryptocurrency of the Binance exchange, one of the largest cryptocurrency exchanges in the world. Initially launched as an ERC-20 token on the Ethereum blockchain in 2017, BNB was later migrated to its own blockchain, the *Binance Chain*, in 2019. BNB is used for a variety of purposes within the Binance ecosystem and beyond.

Here are some key points about *BNB*:

1. *Utility on Binance Platform*:

- *Trading Fee Discounts*: One of the main uses of BNB is to pay for transaction fees on the Binance exchange. If you use BNB to pay for trading fees, you can receive discounts (the discount rate changes over time).

- *Launchpad*: BNB is often used in Binance Launchpad for token sales and other opportunities to participate in new projects listed on the exchange.

- *Staking*: BNB holders can stake their tokens on Binance to earn rewards, often in the form of more BNB or other cryptocurrencies.

2. *Binance Smart Chain (BSC)*:

- BNB is also used as the native gas token for the *Binance Smart Chain (BSC)*, a blockchain network that supports smart contracts and decentralized applications (dApps). It's an alternative to Ethereum and is known for faster transaction times and lower fees compared to Ethereum.