Google Cloud launches MPC service that splits private keys so no one holds the whole thing

The new Multi-Party Compute service targets banks and institutions, putting Google Cloud in direct competition with Fireblocks and BitGo Google Cloud wants to fix one of crypto’s oldest problems: a single private key that can lose everything if it leaks. On October 28, 2026, the company unveiled its Multi-Party Compute (MPC) service at its first digital assets symposium in New York City. The pitch is simple. Break every key into fragments, scatter them, and make sure no single location ever holds the complete thing. Multi-party computation takes a different approach.