Google Cloud Previews MPC Service for Institutional Bitcoin Custody

Google Cloud has introduced a preview of its multi-party computation (MPC) service, designed to help financial institutions improve Bitcoin custody and transaction security.

The technology allows multiple parties to work together to approve and sign cryptocurrency transactions without any single participant having access to the complete private key. This approach could help institutions reduce security risks while managing digital assets through cloud-based infrastructure.

Google Cloud outlined the service in documentation updated Monday, positioning it as a potential tool for institutional Bitcoin custody. The product remains in preview, meaning customers may face limited support and should expect the service to evolve before a full release.

The documentation update came ahead of Google Cloud’s MPC Symposium in New York on Wednesday. The event is set to showcase the company’s latest MPC technology and research projects, with participation from financial industry representatives at firms including Morgan Stanley, OKX, Citi and Wells Fargo.

Google Cloud’s release notes indicate that development of the service dates back to August 2026. The company has also continued expanding its Bitcoin transaction security capabilities. On Oct. 1, it updated its security rules to assess transaction amounts, identify recipient address types and detect change outputs.

These checks can help institutions apply additional safeguards when processing Bitcoin transfers, particularly when handling transactions that require strict controls and monitoring.

The latest development builds on Google Cloud’s earlier work in secure computing. In June, the company discussed Confidential Space, a cloud environment designed to support protected data sharing and secure multi-party computation.

By combining MPC technology with cloud infrastructure, Google Cloud is seeking to provide institutions with additional options for protecting digital assets. The preview service signals growing interest in security systems that allow financial organizations to manage cryptocurrency transactions without relying on a single party to safeguard the entire private key.

However, the service remains in its early stages, and its wider adoption will depend on how institutions assess its security, reliability and suitability for their custody requirements.