Pennings, A.J. (2026, Apr 28) Stablecoins, SACT-AI, and the Future of Global Liquidity for Sustainable Development. apennings.com https://apennings.com/political-economy-of-media/stablecoins-sact-ai-and-the-future-of-global-liquidity-for-sustainable-development/

Introduction

The impending implementation of Treasury-backed stablecoins suggests a the onset of a profound shift in the architecture of global finance. What appears, at first glance, to be a technical innovation in digital payments is better understood as a structural revolution in how USD liquidity is created, distributed, and governed.

This post analyzes the transition of US Treasury-backed stablecoins from a technical payment innovation to a structural revolution in global liquidity. By tokenizing the “pristine collateral” of US government debt, stablecoins are set to create “retail-level Eurodollars,” enabling individuals worldwide to bypass traditional, hierarchical banking channels, including those in Tiers 4 and 5.

When placed within a broader SACT-AI Bancor/International Clearing Union (ICU) framework, stablecoins cease to be mere crypto instruments and become a bridge between today’s dollar system and a future multipolar monetary order.

At their core, stablecoins backed by short-term US Treasury bills transform government debt into circulating digital money. This development extends a longer historical trajectory in which US Treasuries have evolved from simple financing tools into the foundational collateral of global finance.[1] In repo markets, shadow banking systems, and Eurodollar lending networks, Treasuries already function as the primary instruments through which liquidity is secured and expanded. Stablecoins take the next step: they convert that collateral into tokenized, programmable liquidity that can move instantly across borders.

This transformation matters most when understood through the lens of what might be called the SACT stack: substitution, abstraction, computation, and telecommunications. Stablecoins operate across all four layers simultaneously. They substitute for bank deposits in transactions, abstract Treasury securities into digital tokens, rely on computational systems to maintain parity and trust, and move across global telecom networks with minimal latency. In doing so, they compress the traditional hierarchy of dollar access that has long defined the global political economy.

Historically, access to dollar liquidity, especially for countries in what might be termed Tier 4 and Tier 5 of the global system, has been mediated through complex and often exclusionary channels.

Correspondent banking, offshore Eurodollar markets, multilateral institutions, and volatile capital flows have subjected USD liquidity to multiple constraints. These mechanisms are not only costly but also deeply hierarchical, privileging actors closest to the core of dollar creation.[2]

Stablecoins disrupt this structure by enabling what could be described as retail-level Eurodollars. Individuals and firms no longer need to rely on banks to access dollar-denominated liquidity; instead, they can hold and transfer tokenized dollars directly through digital wallets.

Yet this apparent democratization of access carries an inherent contradiction. Without a coordinating framework, stablecoins risk intensifying what economists describe as dollar dominance or even “digital dollarization.” As users in emerging and developing economies shift toward stablecoin USD for transactions and savings, local currencies may weaken, reducing the effectiveness of domestic monetary policy and increasing dependence on US financial conditions (Rey, 2015). In this sense, stablecoins could deepen the very asymmetries they appear to alleviate.

This is precisely where the SACT-AI Bancor/ICU system becomes essential. Originally proposed by John Maynard Keynes at Bretton Woods, the International Clearing Union envisioned a world in which trade imbalances would be managed symmetrically through a supranational unit of account, the Bancor, rather than through reliance on a single national currency.[3] The failure to implement this system led instead to the dollar-centric order, with all its well-known tensions, including the Triffin dilemma and recurring global liquidity cycles.[4]

What Keynes lacked, however, was the technological infrastructure to make such a system operational. Today, SACT-AI provides that missing layer. By combining real-time data processing, machine learning, and global telecommunications networks, it becomes possible to continuously monitor trade flows, capital movements, energy constraints, and climate risks. Most importantly, it would adjust liquidity conditions accordingly. In this framework, stablecoins do not replace the dollar system but are absorbed into a higher-order coordination mechanism.

Within such a system, stablecoin USD would function primarily as a transactional medium, while the Bancor would serve as the unit of account and clearing reference. SACT-AI would mediate between them, dynamically adjusting exchange relationships, enforcing symmetric penalties on persistent imbalances, and directing liquidity toward productive and sustainable uses. In effect, the system transforms money from a passive store of value into an active instrument of coordination.

For populations in Tier 4 and Tier 5 economies, this shift could be transformative. Stablecoins already offer several immediate benefits, including direct access to dollar liquidity without bank accounts, lower transaction costs for remittances, and a relatively stable store of value in volatile monetary environments. These features alone could significantly expand financial inclusion, particularly in regions where traditional banking infrastructure is limited or unreliable.

However, access to liquidity is not the same as development. What distinguishes the SACT-AI approach is its ability to compute development pathways. By integrating financial flows with real-time data on energy use, agricultural productivity, climate vulnerability, and infrastructure needs, the system can allocate liquidity more intelligently. For example, a rural community investing in solar-powered irrigation or telecommunications infrastructure could receive preferential financing terms, dynamically adjusted through AI models that evaluate long-term sustainability and economic impact.

In this sense, stablecoins become more than digital cash. They become programmable claims on future development, embedded within a system that can continuously recalibrate risk and reward. This marks a departure from traditional financial models, where capital allocation is often driven by short-term returns rather than long-term resilience.

At the same time, the risks cannot be ignored. The speed and liquidity of stablecoin systems create the potential for rapid capital flight and digital bank runs, in which large volumes of funds can be withdrawn or reallocated instantaneously. Because stablecoins are backed by Treasuries, such dynamics could transmit stress directly into the US government bond market, tightening the coupling between global liquidity conditions and US fiscal dynamics.[4] Moreover, the concentration of stablecoin issuance and wallet infrastructure in a small number of private entities raises questions about governance, accountability, and systemic risk.

The SACT-AI ICU framework addresses these challenges by introducing algorithmic governance. Capital flows can be monitored in real time, imbalances can trigger automatic adjustments, and safeguards such as dynamic liquidity buffers or programmable capital controls can be deployed when necessary. Most importantly, the system shifts the focus from simply providing liquidity to governing its distribution and use.

The broader implication is a reconfiguration of the global monetary hierarchy. The United States would retain its advantage as the issuer of the world’s primary collateral asset, US Treasuries, but would no longer exercise unilateral control over global liquidity conditions. Financial centers would evolve into hubs of stablecoin issuance and AI coordination, while surplus economies would gain alternatives to recycling capital exclusively into dollar assets. Most significantly, peripheral economies would gain not just access to liquidity, but the capacity to scale that access into sustainable development.

Ultimately, the integration of Treasury-backed stablecoins into an SACT-AI Bancor/ICU system represents a convergence of historical trajectories. The expansion of US debt markets provided the collateral base. The rise of global financial networks and platforms transformed markets into real-time computational systems. Stablecoins now extend that logic into the realm of digital money. What SACT-AI adds is the missing layer of coordination—turning a fragmented, hierarchical system into one that can, at least in principle, align liquidity with global development needs.

The outcome is not predetermined. Stablecoins could reinforce existing inequalities, deepening dependence on the dollar and amplifying financial volatility. Or, if embedded within a robust coordination framework, they could become tools for a more balanced and inclusive global economy. The difference lies not in the technology itself, but in how it is governed.

Summary

The blog post analyzes the transition of US Treasury-backed stablecoins from a technical payment innovation to a structural revolution in global liquidity. By tokenizing the “pristine collateral” of government debt, stablecoins create “retail-level Eurodollars,” enabling individuals in peripheral economies to bypass traditional, hierarchical banking channels.

However, the post warns that this “democratization” carries the risk of digital dollarization, where local monetary policies are hollowed out by the dominance of the USD. To mitigate this, the author proposes integrating stablecoins into a SACT-AI Bancor/International Clearing Union (ICU) framework. This system utilizes modern computational power and global telecommunications to finally realize John Maynard Keynes’s 1943 vision for a symmetric, multipolar monetary order.

By using AI to monitor real-time trade, energy, and climate data, the SACT-AI ICU transforms money into an active instrument of coordination, directing liquidity toward programmable development pathways for Tier 4 and Tier 5 economies. The result is a shift from extractive dollar dominance to an algorithmic symmetry that aligns global finance with long-term sustainability and resilience.

References

Eichengreen, B. J. (2011). Exorbitant Privilege: The Rise and Fall of the Dollar and the Future of the International Monetary System. Oxford University Press.
Gorton, G., & Metrick, A. (2012). Securitized banking and the run on repo. Journal of Financial Economics, 104(3), 425–451.
Gorton, G., Lewellen, S., & Metrick, A. (2012). The Safe-Asset Share. American Economic Review Papers & Proceedings, 102(3), 101–106.
Howell, M. J. (2020). Capital Wars: The Rise of Global Liquidity. Palgrave Macmillan.
Keynes, J. M. (1980). The Collected Writings of John Maynard Keynes: Activities 1940-1944. Shaping the Post-War World: The Clearing Union (Vol. 25). Macmillan. (Original work published 1943).
Mehrling, P. (2011). The New Lombard Street: How the Fed became the Dealer of Last Resort. Princeton University Press.
Pozsar, Z. (2014). Shadow Banking: The Money View. Office of Financial Research Working Paper.
Rey, H. (2015). Dilemma not Trilemma: The Global Financial Cycle and Monetary Policy Independence. NBER Working Paper No. 21162.
Steil, B. (2013). The Battle of Bretton Woods: John Maynard Keynes, Harry Dexter White, and the Making of a New World Order. Princeton University Press.
Triffin, R. (1960). Gold and the Dollar Crisis: The Future of Convertibility. Yale University Press.
Wriston, W. B. (1992). The Twilight of Sovereignty: How the Information Revolution is Transforming our World. Scribner.

Notes

[1] Gorton, G., & Metrick, A. (2012). Securitized banking and the run on repo. Journal of Financial Economics, 104(3), 425–451.
[2] Mehrling, P. (2011). The New Lombard Street: How the Fed became the Dealer of Last Resort. Princeton University Press.
[3] Keynes, J. M. (1980). The Collected Writings of John Maynard Keynes: Activities 1940-1944. Shaping the Post-War World: The Clearing Union (Vol. 25). Macmillan. (Original work published 1943).
[4] Triffin, R. (1960). Gold and the Dollar Crisis: The Future of Convertibility. Yale University Press.
[5] Gorton, G., & Metrick, A. (2012). Securitized banking and the run on repo. Journal of Financial Economics, 104(3), 425–451. Also see Gorton, G., Lewellen, S., & Metrick, A. (2012). The Safe-Asset Share. American Economic Review Papers & Proceedings, 102(3), 101–106.

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Not to be considered financial advice. AI is often used, and results are thoroughly interrogated. Links are used for some citations.

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Anthony J. Pennings, PhD is a Professor at the Department of Technology and Society, State University of New York, Korea and a Research Professor for Stony Brook University. He teaches AI and broadband policy. From 2002-2012 he taught digital economics and information systems management at New York University. He also taught in the Digital Media MBA at St. Edwards University in Austin, Texas, where he lives when not in Korea.

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Tags: Bancor/International Clearing Union (ICU) > John Maynard Keynes > SACT-AI Bancor/ICU > Stablecoins

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