CoW Swap has introduced two significant upgrades to its solver infrastructure, aimed at enhancing the bidding mechanism and execution process. The first upgrade, "hidden bidding until deadline," requires solvers to submit blind bids without visibility into competitors' bids until the deadline, improving execution outcomes for users. Additionally, CoW Swap has removed the Uniform Clearing Price (UCP) constraint. This change simplifies solver logic and enhances the efficiency of finding optimal solutions, while ensuring price consistency across user trades. These upgrades are expected to streamline operations and improve user experience on the platform.