Stablecoin War: OKX Switches to USDC (MiCA), ECB Warns Against Erosion of Bank Deposits
The stablecoin war is escalating with several major developments unfolding simultaneously on the European continent. OKX Europe is making a strategic transition from USDT to USDC to comply with the MiCA regulatory framework, while the European Central Bank (ECB) is warning about the risks stablecoins pose to the traditional banking system. These developments add to the recent launch of Visa’s Open USD and BitPay obtaining a MiCA license, reshaping the balance of the stablecoin market.
OKX Europe Migrates from USDT to USDC: A MiCA Turning Point
OKX, one of the world’s largest cryptocurrency exchanges, has announced a major transition for its European branch: the gradual replacement of USDT (Tether) with USDC (Circle) as its primary stablecoin on the European platform. This decision is directly driven by the entry into force of the European Union’s MiCA (Markets in Crypto-Assets) regulation, which imposes strict requirements on stablecoin issuers.
Tether’s USDT, although dominant globally with a market capitalization exceeding $110 billion, does not yet have the necessary approval to fully comply with the MiCA framework. In contrast, Circle’s USDC has already obtained the required authorisations to operate in the European Economic Area, making it the preferred choice for platforms seeking rapid compliance.
This migration represents a significant turning point for the European cryptocurrency market. OKX Europe handles considerable trading volumes, and the shift from USDT to USDC could lead to a rebalancing of market share between the two largest stablecoins. European OKX users will need to convert their USDT holdings into USDC or other assets to continue trading on the platform without disruption.
The implications of this decision extend beyond OKX itself. Other European platforms may follow this example, creating a domino effect that would strengthen USDC’s position in Europe while weakening that of USDT on the continent. This dynamic illustrates how regulation can reshape competitive balances in the crypto ecosystem far more effectively than market mechanisms alone.
ECB Warns: Stablecoins Threaten the Integrity of Bank Deposits
Alongside this market development, the European Central Bank has published a report alerting to the systemic risks that stablecoins could pose to the traditional banking system. The ECB is particularly concerned about the erosion of bank deposits, a phenomenon already observable in several countries where cryptocurrency adoption is advanced.
According to the ECB’s analysis, stablecoins backed by fiat currency reserves — such as USDC and USDT — create a form of direct competition with traditional bank deposits. When users convert their euros or dollars into stablecoins, these funds leave the conventional banking system to join reserves managed by private issuers. This disintermediation reduces the deposit base of commercial banks, affecting their ability to grant loans and finance the real economy.
The ECB report also emphasises that stablecoin redemption mechanisms — the ability to convert them back into fiat currency — create exposure to the risk of a digital “bank run.” During periods of market stress, a rush for redemptions could destabilise the reserves of stablecoin issuers and, by extension, the financial institutions linked to them.
The Frankfurt-based institution is calling for strengthened prudential supervision of stablecoin issuers, including greater transparency requirements on the composition of their reserves and regular stress tests. The ECB also advocates for global coordination, arguing that the MiCA framework alone is insufficient to prevent cross-border risks.
This warning comes at a time when stablecoin adoption is experiencing accelerated growth. The total market capitalisation of stablecoins has exceeded $200 billion, and their use extends far beyond trading to include payments, international remittances, and DeFi applications.
Visa Open USD and BitPay MiCA: Context of a Structural Transformation
These announcements are part of a broader movement reshaping the stablecoin landscape. The launch of Open USD by Visa, a consortium stablecoin platform that directly competes with Circle, marked a historic turning point. For the first time, a traditional payments giant is entering direct competition with native stablecoin issuers, bringing its network of 130 million merchants and its payment processing infrastructure.
Open USD is not simply a stablecoin — it is a platform that allows multiple financial institutions to issue their own version of a digital dollar on the blockchain, while benefiting from Visa’s settlement and compliance infrastructure. This consortium approach could massively accelerate the adoption of stablecoin payments by traditional merchants, a segment that until now has been dominated by cryptocurrency payment solutions like BitPay.
BitPay, for its part, has obtained a MiCA license in the Netherlands, a crucial step for its European expansion. The payment processor, a pioneer in enabling cryptocurrency payments for merchants, plans to use this license to deploy its stablecoin payment services across the entire European Union, benefiting from the regulatory passport offered by MiCA.
What Consequences for the Stablecoin Market?
The convergence of these events outlines a new paradigm for the stablecoin market. Several trends are clearly emerging.
First, the fragmentation of the market across different regulatory jurisdictions. Europe, with MiCA, is creating an environment where compliant stablecoins (like USDC) gain a competitive advantage over those that are not compliant (like USDT, at least for now). This dynamic could lead to a bipolar market: USDC dominating in Europe and regulated markets, while USDT retains its preeminence elsewhere.
Second, the entry of traditional giants like Visa is transforming the very nature of competition. Stablecoins are no longer solely the business of native crypto players — established financial institutions are aggressively moving into this territory, bringing with them capital volumes, business relationships, and a familiarity with regulatory frameworks that pure crypto players struggle to match.
The ECB warning adds a political dimension to this transformation. Central banks, closely watching the rise of stablecoins, may be tempted to accelerate their own central bank digital currency (CBDC) projects to counter what they perceive as a threat to their monetary issuance monopoly. Several European countries are already working on a digital euro, and the ECB’s warnings could give new momentum to these projects.
For cryptocurrency investors and users, these developments bring both opportunities and risks. The arrival of institutional players and a clearer regulatory framework strengthens the legitimacy and stability of the stablecoin market, but it could also reduce the diversity and innovation that have characterised this space until now.
The OKX migration to USDC perfectly illustrates this tension: on one hand, it offers European users access to a regulated and transparent stablecoin; on the other, it reduces available choices and creates greater dependency on a more limited number of issuers.
Conclusion: A Market in Full Restructuring
The stablecoin industry is undergoing an unprecedented phase of structural restructuring. Between European regulatory pressure, central bank warnings, the arrival of heavyweight institutional competitors, and strategic migrations by exchanges, the stablecoin landscape of 2026 no longer resembles that of 2024 or even 2025.
The ability of various players to navigate this complex environment will determine which stablecoins survive and thrive in the next phase of market maturation. What is certain is that the stablecoin war is only just beginning — and the coming months will be decisive for the monetary architecture of the broader crypto ecosystem.
Bitcoin is currently trading around $64,056, a level reflecting the general market uncertainty surrounding these regulatory and competitive transformations. Investors are closely watching developments in Europe, which could have repercussions far beyond the stablecoin market alone.
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