South Korean police have launched an illegal gambling investigation targeting local users of Polymarket, the cryptocurrency-based prediction market platform. The probe is reportedly the first of its kind in the country aimed at Polymarket users, and it comes as regulators worldwide sharpen their focus on election-related betting.
Why the investigation started
Authorities in South Korea have been watching Polymarket for months, according to people familiar with the matter. The inquiry is focused on whether users violated the country's strict gambling laws by placing bets on political events — including the upcoming U.S. presidential election — through the platform. Under South Korean law, most forms of online gambling are illegal, and prediction markets that involve real-money wagers on future outcomes can fall under that ban.
The investigation marks a significant escalation. While other countries have debated the legality of such platforms, South Korea is moving directly against individual users rather than just the company. Police have not disclosed how many users are under scrutiny or what specific bets triggered the case.
Election betting under the microscope
Polymarket allows users to buy and sell shares in binary outcomes — will a candidate win, will a policy pass — using cryptocurrency. The platform exploded in popularity during the current U.S. election cycle, with billions of dollars in volume. That surge has drawn attention from regulators in the United States and Europe, but South Korea's move is the first known criminal probe focused on users specifically for election wagering.
In South Korea, gambling is tightly controlled. The few legal options include a state-run lottery and certain horse races. Anything beyond that is generally forbidden. Polymarket, which operates mostly offshore and settles bets in USDC stablecoin, exists in a legal gray zone. Investigators are now testing the boundaries of that gray zone.
What could happen next
Police have not announced any arrests or charges. But the investigation signals that South Korean authorities intend to enforce existing gambling statutes against participants in decentralized betting platforms. Legal experts watch the case closely to see if it leads to new guidance or legislation.
The probe also raises questions about how far regulators will go. Polymarket is built on blockchain technology, making transactions pseudonymous but traceable. Investigators have likely obtained transaction records from exchanges or wallet services that link on-chain activity to real identities. If they can build a case, it could set a precedent for other jurisdictions considering similar crackdowns.
For now, South Korean users of the platform face an uncertain legal landscape. The country's police have not commented on whether they plan to pursue a broader sweep or issue warnings. What is clear: the era of unregulated election betting in South Korea appears to be over.
