Binance Chain (BNB Chain) is a blockchain developed by Binance, one of the world's largest cryptocurrency exchanges. It was launched in April 2019 as part of Binance's ecosystem to facilitate the issuance, transfer, and trading of digital assets. BNB Chain is a decentralized blockchain that aims to provide a high-performance platform for building decentralized applications (dApps), token issuance, and asset transfers.