Google Cloud Lists Its Crypto Signing Service in Preview
The service coordinates transaction approvals with key shares; its published support list covers Bitcoin and Ethereum, with Solana marked “coming soon.”

Google Cloud’s Multi-Party Compute service is listed in Preview, with distributed-key signing controls designed to let institutional users authorize digital-asset transfers without bringing a complete private key together in one place.
The product handles transaction authorization; it does not create tokenized securities.
Multi-Party Compute uses threshold signing. Separate parties hold portions of signing keys and cooperate to approve a transaction, so the complete private key does not have to be assembled in one place. Key shares held in hardware-isolated environments cannot be read by a Google operator, while customers retain custody of encryption keys through Cloud Key Management Service in their own Google Cloud organization.
The published support list covers signing for Bitcoin (BTC) and Ethereum. Solana support is marked “coming soon.” Transaction policies can deny a transfer, but enough authorized signers can still approve it.
A general-availability date is not specified.