Polymarket is being blocked in South Korea, where regulators have ordered internet service providers to cut off access after deciding the crypto-based prediction market amounts to an illegal gambling environment. Months of scrutiny preceded the decision, along with a separate police investigation into South Koreans trading on election outcomes through the platform.
Approval came from the Korea Media and Communications Standards Commission on Aug. 18. Two sets of laws underpin the finding: provisions of the Criminal Act covering assistance with gambling and the operation of gambling venues, and rules in the National Sports Promotion Act covering unauthorized betting-like activities. Domestic telecom providers were expected to receive the list of blocked sites on Aug. 19, with access restricted almost immediately afterward.
Contracts tied to real-world outcomes are what Polymarket sells, covering elections, sports, economic data, and weather. Each one settles at $1 if it resolves correctly and at nothing if it doesn’t, so the price of a contract works as an implied probability for the event behind it. Cryptocurrency, rather than a conventional sportsbook account, handles the money on the international platform.
The commission looked past that technical framing to the winner-takes-all structure, where users make or lose money on events outside their control, along with everything Polymarket does around it: creating the markets, setting the trading rules, running crypto deposit, withdrawal, and settlement infrastructure, and taking fees from transactions. Wrapping the wager in a blockchain contract doesn’t change what the customer is actually doing.
Polymarket’s defense during the review rested on distance from Korean users and distance from the money itself. Korean-language support had been removed, the company said, and it doesn’t accept payments in South Korean won. It also described its trades as non-custodial and peer-to-peer, with blockchain smart contracts processing transactions rather than Polymarket holding and managing player funds.
The commission rejected both arguments, saying a company can’t escape South Korean law through the technical structure of its service or by stripping out localization, and citing markets aimed squarely at Korean users as proof the platform stayed useful in the country regardless of language settings. One of them asked about rainfall in Seoul during August.
Users of the platform were already under investigation before any of this. Domestic activity on Polymarket drew police attention in June, with the Gangwon Provincial Police Agency examining whether South Koreans had broken gambling laws by trading there. Volume around the June 3 local elections triggered it, including more than $52 million on contracts connected to the Seoul mayoral race alone.
Gambling in South Korea is legal only through a tightly controlled group of exceptions, with criminal penalties for unauthorized betting and domestic sports betting largely confined to the state-authorized Sports Toto system. Police have been applying those existing laws to prediction-market trading rather than waiting for South Korea to build a separate framework for event contracts.
Several other countries have reached the same conclusion about what Polymarket really is. France began blocking it in July, and Australia and Germany had already restricted access on similar grounds, treating the platform as an unauthorized gambling service instead of a financial exchange. Polymarket’s own geographic restrictions page lists 39 countries where access is completely blocked, though South Korea wasn’t on it when the page was checked after the regulator’s decision.
Polymarket said in July that it intended to challenge France’s block in court on the argument that prediction markets aren’t conventional gambling products, and the company is simultaneously trying to grow its regulated presence in the US, where the fight is over whether event contracts belong under federal financial oversight instead of state sportsbook rules.
Rather than inventing a category for prediction markets, South Korean regulators asked what happens when someone uses Polymarket: money goes at risk, an uncertain event decides who gets paid, and the platform makes the whole transaction possible. Peer-to-peer, non-custodial, and blockchain-based were not enough to make that look like something else.