Uniswap has launched its proprietary blockchain, Unichain, built within Optimism's Superchain infrastructure.Unichain aims to optimize cross-chain exchanges and provide near-instant transactions with reduced losses due to MEV.However, Unichain's impact on Uniswap's token (UNI) and Ethereum transactions has been limited so far.Ethereum's recent gas limit increase aims to improve affordability and scalability in preparation for the Pectra upgrade.