Developers are now allowed to fork v3 protocol as its Business Source License (BSL) expired on April 1, shows the protocol documentation. The expiration was a much-anticipated event within the DeFi ecosystem, as it enables developers to deploy their own decentralized exchange (DEX).
The BSL is a type of license meant to last for a determinate period before becoming completely open source. In general, the purpose is to protect the author’s right to profit from their creations. Uniswap v3’s license was released in 2021 for a period of two years, preventing its code from commercial use. A new license called General Public License applies to the protocol now.