OKX has revised its trading guidelines for fiat currency and stablecoins for institutional investors in the European Economic Area (EEA) to align with the European Union's (EU) cryptocurrency regulation MiCA. Following this revision, eligible assets, trading pairs, and eligibility for use may vary depending on the institutional investor's country of residence, account type, and the regulatory compliance of the stablecoin. This means that even trading pairs supported across the entire exchange may be restricted for some European institutional accounts. This measure is not for launching new trading products but to refine the regulatory compliance requirements for existing trading services.