Why Digital Money Could Still Face Runs Even With Safe Assets

3rd Jun 2026
A new Federal Reserve study is challenging one of the biggest assumptions behind the multi-billion-dollar digital money industry: that safer reserves automatically make digital money safer. Researchers say digital currencies could still face run-like behaviour even when backed by perfectly safe assets, raising fresh questions about the infrastructure supporting stablecoins, tokenized deposits and future central bank digital currencies. For an industry investing heavily in the future of digital finance, the warning shifts attention away from reserves and toward the systems carrying those assets. Much of the regulatory debate surrounding digital assets has focused on a familiar problem. If issuers hold enough high-quality reserves and can meet redemption requests, confidence should follow. The Federal Reserve paper suggests that may only solve part of the challenge. The study, The Fragility of Perfectly Safe Digital Money, examines how blockchain-based forms of money behave when transaction networks become congested. Unlike traditional payment systems, which rely on banks and central banks to settle transactions at predictable costs, blockchain networks depend on decentralized verification. As activity increases, transaction fees can rise sharply, making it more expensive to move value across the system. For years, investors, fintech firms and policymakers have treated reserve quality as the main line of defence against instability. That thinking has shaped stablecoin legislation, reserve disclosure requirements and broader efforts to bring digital assets closer to mainstream finance. Yet the paper identifies a different source of risk. The more widely a digital currency is used, the more valuable it becomes. A larger user base encourages adoption, increases transaction activity and strengthens its role as a payment tool. However, that same growth can also create congestion, pushing transaction costs higher and making the platform less attractive to use. The authors suggest those competing forces can create a dangerous feedback loop. When transaction costs rise, some users may decide to leave. Their departure reduces the usefulness of the system for those who remain. That, in turn, can encourage more users to exit, weakening adoption further and accelerating redemptions. Under certain conditions, the process can resemble a traditional financial run even when the underlying assets remain perfectly safe and liquid. That question arrives at an important moment for the financial industry. Stablecoins now represent hundreds of billions of dollars in value, banks are experimenting with tokenized deposits, and central banks continue exploring digital currency projects. Across the sector, institutions are investing heavily in technologies designed to modernize payments, shorten settlement times and support new forms of financial infrastructure. Banks, payment companies and technology firms are increasingly betting that tokenized assets and blockchain-based payments will become a larger part of the financial system. If network reliability becomes a limiting factor, some assumptions underpinning those investments may need to be revisited, particularly as regulators and institutions move from pilot programs to large-scale deployment. If the Federal Reserve researchers are correct, the implications extend well beyond crypto markets. A stablecoin backed entirely by government securities could still experience pressure if the blockchain supporting it becomes expensive or difficult to use. The same concern could apply to tokenized bank deposits, tokenized Treasury products and future digital currencies operating on public blockchain networks. In each case, confidence may depend not only on the value of the asset itself but also on the reliability of the technology moving it between users. Investors may find that conclusion particularly uncomfortable. Much of the enthusiasm surrounding tokenization rests on the promise of faster, cheaper and more efficient financial transactions. If congestion becomes a recurring constraint, the economics behind some of those assumptions could prove more complicated than expected. The challenge is equally significant for banks and payment providers. Institutions developing digital finance strategies have largely focused on regulatory compliance, custody arrangements and reserve management. The findings suggest that transaction capacity and performance during periods of heavy demand could become just as important. A payment platform that becomes significantly more expensive when activity surges may introduce vulnerabilities that traditional financial infrastructure was designed to avoid. Another implication receives far less attention. Financial discussions have largely concentrated on strengthening the asset through better reserves and tighter safeguards. The Federal Reserve paper suggests the transport mechanism itself can become a source of instability. In other words, a digital asset may appear secure on paper while the network supporting it becomes the weak point. That shift in thinking could eventually influence how regulators approach the next phase of digital money risk. Reserve requirements and redemption rules remain important, but policymakers may also need to examine how payment networks behave when demand spikes and transaction costs climb. For most of the past decade, the debate has centred on whether digital currencies were backed by enough high-quality assets. The new paper shifts the focus elsewhere. Even if the reserves are beyond doubt, can the technology carrying those assets cope when demand suddenly surges?