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A major prediction market is tightening oversight after an American soldier was accused of betting on a military operation
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Polymarket says it's increasing monitoring of trades after prosecutors charged a U.S. Army Master Sergeant of using classified information to place bets on the capture of former Venezuelan President Nicolas Maduro
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The company is now partnering with blockchain firm Chain ysis to track transactions and flag suspicious activity in real time
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Because every trade is recorded on a public blockchain, investigators can trace patterns tied to insider knowledge
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Prosecutors say Master Sergeant Gannon Ken Van helped plan the raid on Maduro's compound
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then placed 13 bets on the outcome, making more than $400,000. He has pleaded not guilty
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The case centers on a high-risk operation in Caracas and what prosecutors say is a clear example of insider trading tied to national security
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Polymarket says the new system is designed to catch suspicious trades faster and give law enforcement verified evidence
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Online users flag Van 's bets within hours, but it took months to build the case
