Uniswap v4 Launches Across 12 Blockchains

Decentralized exchange Uniswap rolled out its highly anticipated Version 4 (v4) on January 31, introducing new "hooks" that let developers customize trading pair logic. Uniswap v4 went live simultaneously on 12 chains – including Ethereum mainnet and multiple Layer-2 networks like Arbitrum, Base, Optimism, and Polygon.

The upgrade enables advanced features such as dynamic fees, automated liquidity management for yield, and protection against MEV (e.g. sandwich attacks). This major DeFi deployment is aimed at keeping Uniswap competitive, after it lost some trading volume lead to rival DEXs on Solana's memecoin-fueled market.

Source: Cointelegraph – Uniswap v4 launches on 12 chains