South Korea blocks Polymarket over gambling law violation

That single mechanism was the commission’s central argument: on Polymarket, what a user wins or loses tracks directly to how a real-world event turns out, with no input from the person holding the position once the bet is placed. KCSC treated that structure as functionally indistinguishable from the gambling activity the criminal code and sports betting law already cover, regardless of what technology sits underneath it, how the transactions settle, or how the platform describes its own mechanics.

Three separate agencies signed off on that reading before KCSC acted, spanning law enforcement, national gambling oversight, and sports-funding regulation: the National Police Agency, the National Gambling Control Commission, and the Korea Sports Promotion Foundation all reached the same conclusion independently when the commission asked each of them for input on the case.

Polymarket argued the technology itself puts it outside Korean jurisdiction: representatives framed the platform as a peer-to-peer system running on smart contracts, with no central operator ever holding user funds, pointing to the disabled Korean-language interface and the lack of won-denominated settlement as evidence the company wasn’t specifically targeting Korean users in the first place, and never had been since launch.

None of that mattered to KCSC, because the commission’s test wasn’t about where funds sit technically — it was about how much control Polymarket exercises over the market itself. By that measure, the company writes its own rules, decides which events go live, moves crypto in and out on users’ behalf, and profits from every transaction — active involvement the commission said no amount of smart-contract architecture could paper over or explain away.