Google Cloud pilots blockchain platform GCUL for banks

Google Cloud is testing its own blockchain Google Cloud Universal Ledger (GCUL) for the financial sector. This layer-1 network, developed with CME Group, aims to simplify tokenization and settlements while offering neutral infrastructure for global finance. At this stage, GCUL is running on a private testnet.

Rich Widmann, Google Cloud’s Head of Web3 Strategy, described the platform as “credibly neutral infrastructure” for financial institutions. Unlike blockchains developed by payment or stablecoin companies, GCUL is not tied to a single brand, making it more accessible to banks that may be reluctant to adopt a competitor’s network.

One of GCUL’s key features is support for smart contracts written in Python. Google believes this will lower the barrier for financial developers, since Python is already widely used in banking and capital markets for data analysis and automation. Full technical specifications have not yet been released, and the company has not set a timeline for a public testnet.

The ledger is built as a multi-currency platform designed for straightforward integration with traditional financial systems. While permissioned, the network aims to maintain neutrality toward different payment and stablecoin providers.

Google first introduced the project in March through a pilot program with CME Group. In its initial phase, the companies tested tokenization and settlement on GCUL. CME Group Chairman and CEO Terry Duffy said the technology could deliver major efficiencies in collateral, margin, settlement, and fee payments as markets move toward 24/7 trading.

For CME, the partnership is part of a broader push to cut costs and improve operational efficiency in regulated markets. With the first phase of integration completed, direct testing with market participants is scheduled to begin later in 2025. The launch of new services is targeted for 2026.

Although details remain limited, GCUL is already seen as one of the most ambitious blockchain infrastructure projects for the banking industry. If testing proves successful, Google Cloud could position itself as a key provider of universal infrastructure for asset tokenization and near-instant settlement in global finance.