A Risk Mitigation Model of Monetary Ecosystem with Stablecoins

Hongzhe Wen and R. S. M. Lau

Papers from arXiv.org

Abstract: Stablecoins have emerged as a significant component of global financial infrastructure, with aggregate market capitalization surpassing USD250 billion in 2025. Their increasing integration into payment and settlement systems has simultaneously introduced novel channels of systemic exposure, particularly liquidity risk during periods of market stress. This study develops a hybrid monetary architecture that embeds fiat-backed stablecoins within a central bank-anchored framework to structurally mitigate liquidity fragility. The proposed model combines 100 percent reserve backing, interoperable redemption rails, and standing liquidity facilities to guarantee instant convertibility at par. Using the 2023 SVB USDC de-peg event as a calibrated stress scenario, we demonstrate that this architecture reduces peak peg deviations, shortens stress persistence, and stabilizes redemption queues under high redemption intensity. By integrating liquidity backstops and eliminating maturity-transformation channels, the framework addresses run dynamics ex ante rather than through ad hoc intervention. These findings provide empirical and theoretical support for a hybrid stablecoin-CBDC architecture that enhances systemic resilience, preserves monetary integrity, and establishes a credible pathway for stablecoin integration into regulated financial systems.

Date: 2025-10
New Economics Papers: this item is included in nep-fdg, nep-mon and nep-pay
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