PANews June 25 news, according to The Block, Spark and Uniswap have partnered to launch the stablecoin "FX Layer" on Uniswap v4, aimed at providing institutions with low-slippage dollar stablecoin conversion infrastructure. The layer acts as a shared liquidity and settlement system, allowing stablecoin issuers such as banks, fintech and payment companies to connect to a unified pool without each having to build their own market-making and inventory management systems. Spark is responsible for liquidity allocation and governance coordination among different stablecoins, while Uniswap provides the programmable AMM architecture. As an initial measure, Spark will migrate $150 million in liquidity from its USDS ecosystem to Uniswap v4 to establish a "liquidity base" for pools supporting USDS, USDT and PYUSD. USDS is a dollar stablecoin issued by Sky (formerly MakerDAO) and is the third-largest stablecoin after USDT and USDC.