Ethereum devs cry foul on Uniswap v4 'open source' promises

Uniswap released version 4 of its decentralized exchange under a Business Source License (BSL), and Ethereum developers in the open source community say calling it open source is misleading. Lefteris Karapetsas, founder of rotki, said the choice shows Uniswap "doesn't understand open source" and believes its code is its moat. Under the BSL 1.1, the code is publicly viewable and can be copied, modified and redistributed, but it cannot be used for commercial or production purposes for four years, after which it converts to a General Purpose License. Scott Lewis said Uniswap's claim to have open sourced v4 misrepresents a four-year proprietary license, while Uniswap lead engineer Noah Zinsmeister said four years strikes a reasonable balance between innovation and exclusive rights.