Google Advances Its Layer-1 Blockchain; Here’s What We Know So Far
1Rich Widmann, head of Web3 at Google, outlined on Tuesday how his firm's upcoming layer-1 blockchain for finance differs from Stripe's Temp and Circle's Arc.
Google Cloud is moving forward with plans to launch its own layer-1 (L1) blockchain, positioning the network as neutral infrastructure for global finance at a time when fintech competitors are developing out their own distributed ledgers.
In a LinkedIn post published Tuesday, Rich Widmann, Google’s head of Web3 strategy, provided fresh details on the project, known as the Google Cloud Universal Ledger (GCUL). He described the platform as a credibly neutral, high-performance blockchain designed for institutions, supporting Python-based smart contracts to make it more accessible to developers and financial engineers.
“Any financial institution can build with GCUL,” Widmann said, arguing that while companies like Tether may be unlikely to adopt Circle’s blockchain and payment firms like Adyen may hesitate to use Stripe’s, Google’s neutral infrastructure removes those barriers.
He also expanded on a comparative chart by fintech strategist Chuk Okpalugo, highlighting how GCUL differs from Stripe’s Tempo and Circle’s Arc, two other high-profile L1 efforts.
In setting out Google’s case for the Universal Ledger, Widmann drew contrasts with other high-profile entrants.
Stripe’s project, Tempo, is rooted in its payments empire, effectively extending the company’s existing merchant rails into a vertically coffntrolled chain. Circle’s Arc, by contrast, places its stablecoin at the center of the system, treating USDC as the protocol’s native fuel and promising lightning-fast settlement with built-in currency exchange.
Google’s approach is different still: the Universal Ledger is designed as a shared infrastructure layer, intended to be credibly neutral and accessible to any institution rather than bound to a single payments ecosystem.
Timelines also set the projects apart. Circle has already begun piloting Arc, while Stripe is targeting a launch next year. Google and CME, meanwhile, have completed an initial integration of GCUL, with broader testing to follow later this year and full services expected in 2026.
The distribution story reinforces those distinctions. Stripe can lean on more than a trillion dollars in annual merchant payment flows. Circle can count on USDC’s global footprint and liquidity integrations. Google brings the reach of its cloud platform, along with the promise of scaling a ledger that can support billions of users and hundreds of institutions.
Features further differentiate the chains. Arc’s focus is speed and seamless foreign exchange, Tempo’s is merchant integration, and GCUL’s is programmability through Python-based smart contracts and institutional-grade tokenization.
The result, Widmann argued, is divergent positioning. Stripe’s and Circle’s ledgers may serve their own ecosystems well but risk deterring competitors, while Google is pitching GCUL as neutral ground — a ledger that anyone, from exchanges to payment providers, can use without fear of strengthening a rival.
The institutional-first positioning is not new.
In March, Google Cloud and CME Group jointly announced GCUL, unveiling it as a programmable distributed ledger tailored for wholesale payments and asset tokenization.
CME Group said it had already completed the first phase of integration and testing, describing the technology as a...
https://www.coindesk.com/business/2025/08/27/google-advances-its-layer-1-blockchain-here-s-what-we-know-so-far
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