As cryptocurrencies and digital finance rapidly grow, efforts to establish regulatory frameworks are accelerating worldwide. A prime example of this is the profound impact of the European Union's (EU) Markets in Crypto-Assets Regulation (MiCA) on the euro-denominated stablecoin market since its implementation. According to a Yahoo Finance report on March 27, 2026, the trading volume of euro-denominated stablecoins has approximately halved since the implementation of the EU MiCA regulation. This is a significant case study, not only reflecting changes in the cryptocurrency market but also illustrating the dynamics of the digital asset ecosystem and the EU's financial regulatory policies. The MiCA regulation imposes stringent reserve requirements on stablecoin issuers. It mandates that issuers hold sufficient assets corresponding to the stablecoins issued, establishing a system capable of immediate redemption should users request it. Furthermore, it demands strict compliance with Anti-Money Laundering (AML) and Counter-Terrorist Financing (CFT) regulations, requiring systems to track all transactions and report suspicious activities. For consumer protection, thorough approval procedures are required, and issuers must regularly report their reserve status and operational performance to supervisory authorities. While these requirements reflect regulators' intent to enhance stablecoin stability and transparency, they also impose a significant burden on issuers. Consequently, there has been an increasing number of euro-denominated stablecoin issuers withdrawing from the market or scaling back their operations. Market analysts point out that while the regulation aims to ensure market stability, enhance transparency, and protect investors, the increased costs and complex procedures for compliance are, in fact, stifling liquidity and making new market entry difficult. Small and medium-sized stablecoin issuers, in particular, face substantial expenses for legal advice, audits, and system development to meet MiCA's requirements, significantly deteriorating their business viability. Some issuers, deeming the time and cost for MiCA compliance too high, have decided to completely cease operations in the European market or relocate their businesses to regions with less stringent regulations. As a result, euro-denominated stablecoins are gradually losing their presence in the global market, while dollar-based stablecoins continue to exert strong influence. Market analysts cite the US dollar's status as a reserve currency as one of the primary reasons for dollar-based stablecoins' sustained competitiveness. The dollar is used as the base currency for international trade and financial transactions, securing high liquidity and trust worldwide. Another crucial factor is the relatively clearer and more established regulatory environment in the United States. While US regulations are by no means lax, clearly defined standards and legal stability offer a degree of predictability to stablecoin issuers. Issuers can clearly understand what requirements they need to meet, enabling them to formulate long-term business plans accordingly. In contrast, euro-denominated stablecoins faced several structural issues even before MiCA's implementation. The euro has relatively limited purchasing power and liquidity in the global market compared to the dollar, and the varying economic conditions within the Eurozone meant that monetary policy effects were not uniform. Furthermore, the use cases for euro-denominated stablecoins were primarily confined to the European region, limiting their global expansion. In this context, the addition of new and stringent regulatory requirements under MiCA has further exacerbated the challenges for the euro-based ecosystem. With regulatory burdens compounding existing structural weaknesses, the euro-denominated stablecoin market is experiencing a double whammy. The Divergent Fates of Dollar and Euro Stablecoins Actual market data clearly illustrates this trend. Since MiCA came into effect, the trading volume of major euro-denominated stablecoins has decreased by half, coinciding with the strengthening market dominance of dollar-based stablecoins. According to market observers, dollar-based stablecoins continue to maintain an overwhelming market share, while euro-denominated stablecoins account for a relatively small proportion. Regarding these changes, cryptocurrency market analysts emphasize that euro-denominated stablecoins require new innovation and regulatory adaptability to survive in the global market. It is essential to go beyond mere regulatory compliance, offering better value to users and developing efficient services. So, what are the experts' views on this situation? Some analysts predict that while MiCA may act as a market pressure factor initially, in the long term, a clear regulatory framework will boost investor confidence and facilitate greater institutional investment. The logic is that once re
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