Stablecoins and the DeFi-TradFi Entanglement: Systemic Risk and Connection Conditions

Abstract

The integration of decentralized finance (DeFi) and traditional finance (TradFi) through fiat-backed stablecoins has created a composite financial system exposed to new channels of systemic risk. This Article analyzes how arbitrage breakdowns, synchronized outflows, and thinning liquidity can interact to amplify selling pressure and trigger regime shifts that spill into short-term funding markets. Building on ideas from traditional market structure and regulation, it translates familiar tools into seven design principles for minimizing tail risk and then examines the distinctive constraints that arise when those principles are implemented through DeFi architectures such as automated market makers, lending protocols, and bridges. Recognizing that core DeFi protocols often lie beyond direct supervisory reach, the Article advances a regulatory strategy centered on "connection conditions" at supervised junctions. By tying access to banks, custodians, and centralized exchanges to clear standards for governance, risk management, and architecture, this strategy combines benefits and constraints so that Law, Market, Norms, and Architecture work together to align profit-seeking with financial stability and to replace opaque de-banking with a transparent pathway for safe DeFi connectivity.