BNB chain released Layer-2 testnet based on OP Stack 📢 Binance’s BNB chain has just introduced its Layer-2 testnet named opBNB based on Optimism’s OP Stack. opBNB is said to improve transaction speed and costs significantly. BNB’s layer-2 will launch in the third quarter of 2023. 🌟 Binance’s latest news caused the OP token to jump 22.5% to $1.35 in just two days, whereas BNB’s price rose slightly to $250. Investors are keeping their hopes high for a pump following the opBNB launch later this year.