In a significant step towards integrating blockchain technology into mainstream banking, UBS, PostFinance, and Sygnum have successfully conducted cross-bank transactions on the Ethereum blockchain. This proof of concept, unveiled on Tuesday, highlights the potential for deposit tokens to revolutionize the way financial institutions handle payments. The initiative, conducted under the auspices of the Swiss Bankers Association, is an encouraging sign for the future of programmable money.
Cutting-Edge Collaboration
The collaboration between UBS, one of Switzerland’s largest banks, PostFinance, a subsidiary of the state-owned Swiss Post, and Sygnum, a trailblazer in crypto banking, marks a pivotal moment in the banking sector’s exploration of blockchain technology. By using deposit tokens—digital representations of traditional bank deposits—the institutions demonstrated the viability of settling transactions without relying on conventional payment systems.
The transactions were conducted on Ethereum, utilizing a permissioned framework that ensures privacy and security, while also taking advantage of blockchain’s transparency and efficiency. This hybrid approach allows for the benefits of blockchain without compromising the security standards expected by financial institutions.
Bridging Traditional and Digital
Switzerland already boasts an efficient domestic payment network, yet the current systems lack the ability to handle programmable conditions or seamlessly integrate with blockchain-based markets. This is where deposit tokens shine. They allow for instantaneous transfers and can be programmed with automated conditions using smart contracts.
Imagine a world where a securities trade settles the instant ownership is transferred, or where an insurance payout is automatically triggered once a claim is validated. These possibilities are not just futuristic fantasies; they’re becoming tangible realities thanks to the work being done by these pioneering banks.
The trial explored two specific use cases: peer-to-peer payments between customers of different banks, and an escrow-like scenario where deposit tokens were exchanged for tokenized assets. Both scenarios demonstrated the technical and legal feasibility of such transactions, paving the way for more widespread adoption.
Challenges on the Horizon
While the successful trial is promising, scaling this system for broader use presents challenges. It requires the participation of more banks, infrastructure providers, and regulatory bodies to create a robust and comprehensive network. The Swiss Bankers Association has made digital currencies a strategic priority, but they caution that the pilot does not signal an immediate rollout of deposit tokens.
Regulatory frameworks will need to evolve to accommodate these new technologies, ensuring they are implemented safely and securely. This means working closely with regulators to establish guidelines that protect consumers while fostering innovation.
A Balanced Perspective
As exciting as these developments are, it’s important to maintain a balanced perspective. Critics of blockchain technology often point to its scalability issues and energy consumption. Ethereum, despite its transition to a more energy-efficient proof-of-stake model, still faces these challenges. Moreover, the integration of such technology into traditional banking systems raises questions about cybersecurity and privacy.
However, supporters argue that the potential benefits—such as increased efficiency, reduced costs, and enhanced transparency—far outweigh these concerns. The ability to program money with smart contracts opens up a world of possibilities that could redefine finance as we know it.
The Road Ahead
The journey towards widespread adoption of blockchain technology in banking is just beginning, and the collaboration between UBS, PostFinance, and Sygnum is a promising start. By demonstrating the feasibility of cross-bank payments on Ethereum, these institutions are laying the groundwork for a future where blockchain and traditional finance coexist seamlessly.
As the banking sector continues to explore these possibilities, the lessons learned from this trial will be invaluable. They provide a roadmap for other institutions looking to harness the power of blockchain, and they serve as a reminder that innovation often starts with a single step.
In the end, whether deposit tokens become a staple in the banking industry will depend on the ability of financial institutions to adapt to the rapid pace of technological change. For now, this successful test is a testament to the potential of blockchain to transform banking, offering a glimpse of what’s possible when traditional finance meets cutting-edge technology.

Steve Gregory is a lawyer in the United States who specializes in licensing for cryptocurrency companies and products. Steve began his career as an attorney in 2015 but made the switch to working in cryptocurrency full time shortly after joining the original team at Gemini Trust Company, an early cryptocurrency exchange based in New York City. Steve then joined CEX.io and was able to launch their regulated US-based cryptocurrency. Steve then went on to become the CEO at currency.com when he ran for four years and was able to lead currency.com to being fully acquired in 2025.

