Google Cloud Launches Multi-party Compute To Secure Institutional Bitcoin Custody

• Google Cloud updated its Multi-Party Compute (MPC) service documentation, positioning it for institutional Bitcoin and crypto custody by banks and financial firms
• The MPC system lets multiple parties jointly authorize and sign transactions, ensuring no single institution controls a complete private key
• The preview-stage service preceded Google’s MPC Symposium in New York, featuring speakers from Morgan Stanley, OKX, Citi, and Wells Fargo
• Google expanded the service’s Bitcoin security rules on October 1, adding transaction amount evaluation, destination address type identification, and change output detection

Google Targets Institutional Crypto Custody

In late October 2026, Google Cloud (Alphabet’s cloud computing arm) updated the documentation for their Multi-Party Compute (MPC). This specifically highlights how MPC can be used in Bitcoin and cryptocurrency institutional custody.

This is our biggest launch in the digital assets space to date 🚀 If you need to custody crypto at scale, Google MPC provides security without trading performance. Reach out to learn more.

https://t.co/ZfCsJOSNcV

— nalin 🇺🇸 (@nalin) October 28, 2026

This framework allows multiple parties within a financial institution to authorize and sign cryptocurrency transactions. It ensures key management is spread across several parties, so no party has full control of the private key, reducing single point of failure.

Preview Mode, Ahead Of Symposium

The update arrived just before Google’s MPC Symposium in New York, where speakers from Morgan Stanley, OKX, Citi, and Wells Fargo were scheduled to discuss digital asset custody and security.

The MPC service remains in preview, with Google noting it is provided as is and with potentially limited support. It builds on earlier work through Google’s Confidential Space product, a cloud environment for secure multi-party computation described in a June 2026 blog post.

Expanding Bitcoin Security Capabilities

Google strengthened the service’s Bitcoin-specific rules on October 1, adding features to evaluate transaction amounts, identify destination address types, and detect change outputs.

These additions bring institutional-grade transaction screening to the MPC offering, aligning it with compliance requirements banks face when handling digital assets. Release notes for the service date back to August 2026.

A Strategic Shift For Traditional Finance

Google Cloud’s Director of Digital Assets Strategy, Rich Widmann, represents Google’s growing institutional focus in the digital asset space.

By packaging MPC technology for bank-grade Bitcoin custody, Google is positioning itself as infrastructure for traditional financial firms entering on-chain markets, competing with specialist custodians and enterprise cloud providers in a rapidly expanding sector.

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