Citi and Swift successfully test synchronized fiat-to-digital currency payments using USDC on Ethereum. A new front for global digital asset settlements?
Citi and Swift have successfully completed a trial demonstrating the feasibility of settling payments between fiat and digital currencies. The trial utilized a Payment-versus-Payment (PvP) workflow, ensuring synchronized settlement of both currency types in real-time.
By incorporating blockchain technology into existing financial systems, this trial marks a significant step forward in bridging the gap between fiat and digital assets. USDC tokens on the Ethereum Sepolia testnet were used to simulate near-production conditions for the test.
Payment-versus-Payment Workflow Tested
Citi and Swift’s trial demonstrated the effectiveness of the Payment-versus-Payment (PvP) workflow for cross-currency settlement. This system ensures that both fiat and digital currencies settle simultaneously, removing execution risks.
The trial leveraged Swift’s existing infrastructure, enhanced with blockchain connectors, orchestrators, and smart contracts to accommodate digital currencies.
During the trial, Citi used USDC tokens from Circle on the Ethereum Sepolia testnet.
The orchestrator within the system managed the sequencing of messages, coordinating between fiat and digital currency legs. This system ensured that the transaction was finalized without errors, proving that both fiat and digital currencies can work together in real-time.
🚨 BREAKING: Citi and Swift bank just wrapped a trial that settled payments between fiat and digital currencies.
They used USDC + blockchain + Swift’s messaging system to prove real interoperability is possible. pic.twitter.com/AA1TbNDNLa
— Real World Asset Watchlist (@RWAwatchlist_) November 19, 2025
This trial proves that financial systems can integrate blockchain technology while maintaining the security and reliability needed for large-scale, cross-currency payments. The successful synchronization of both fiat and digital currencies paves the way for more efficient and transparent transactions in the future.
Advancing Digital Asset Interoperability
The successful trial demonstrates the growing role of digital assets in global finance. Citi estimates that the stablecoin market could reach $1.9 trillion by 2030, driven by the increasing use of digital currencies.
While stablecoins are primarily for cross-border payments, settlement typically requires conversion into fiat currency, which has posed challenges.
By integrating stablecoins into existing financial systems, Citi and Swift are helping to reduce the need for conversion. This trial shows that digital currencies can be used in a way that is synchronized with traditional financial workflows.
With this integration, digital currencies can be as reliable as fiat currencies for large-scale transactions.
Citi and Swift’s efforts prove that blockchain technology can enhance traditional financial systems, making digital asset settlements more secure and efficient. This approach demonstrates that scalable solutions for digital asset payments are feasible and usable by major financial institutions.
Related Reading: SWIFT Teams Up with Consensys on Blockchain Settlement System
Citi and Swift Future Steps and Broader Participation
Citi and Swift plan to refine the payment system further with broader participation from the financial community.
They aim to develop new standards for digital asset transactions for use by financial institutions globally. Besides, as more financial entities join, the system’s scalability will improve. This will ensure the widespread use of digital assets in mainstream finance.
The next phase of the initiative will focus on improving interoperability and increasing the adoption of blockchain technology.
Hence, as institutions implement these solutions, the future of crypto payments looks promising. This is with faster, more secure transactions on the horizon.