Spark, Uniswap, and Sky are launching a joint Stablecoin FX Layer, with a $150M USDS migration to Uniswap v4 as the first deployment of shared programmable liquidity infrastructure for multi-issuer stablecoins.

Spark is establishing a "liquidity foundation" for the new pool by migrating $150 million from its USDS ecosystem to Uniswap v4.

The protocols are building shared liquidity and trading infrastructure for a future with hundreds of competing digital currencies on blockchain rails.