MPC stories

Oct 28, 2026

Google Cloud previews multi-party compute service for cryptocurrency custody

Google Cloud is advancing a multi-party compute (MPC) service that allows financial institutions to jointly authorize cryptocurrency transactions by splitting private keys across multiple parties, with no single entity controlling the complete key. The service is currently in private preview with major financial institutions testing it, and Google is targeting a broad release in early 2027.

Oct 28, 20269 sources

Top claims

▪Google Multi-Party Compute splits private cryptographic key fragments across separate environments, allowing financial institutions to distribute key shares across on-premises hardware, Google Cloud, and competing cloud providers.
▪Google researchers estimated that a sufficiently powerful future quantum computer could theoretically derive a Bitcoin private key from an exposed public key in approximately 9 minutes.
▪CERT/CC recommended keeping chain codes confidential and avoiding reliance on hardened key derivation to isolate signer shares until Fireblocks corrects its mpc-lib library implementation.

Subtopics

Crypto custody1 Crypto security1 Institutional crypto adoption1 Key management1 Private key compromise1

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