Those viral videos of college kids casually turning prediction market bets into life-changing money? Apparently, they were about as real as a three-dollar bill.

The Wall Street Journal published an investigation on June 20 revealing that Polymarket allegedly paid social media influencers to produce videos depicting fabricated profits from trades on its platform. The creators, described as primarily college-age, used fake websites that imitated the actual Polymarket interface to showcase staged betting successes. Some of these videos illustrated unearned gains totaling nearly $1.9 million.

According to the WSJ investigation, dozens of creators were involved in producing these misleading videos. The content featured entirely staged wins using counterfeit versions of Polymarket’s interface, designed to look indistinguishable from the real thing.

Polymarket has responded by launching an internal investigation into its promotional practices. The company hasn’t publicly detailed findings from that review.

By June 26, US lawmakers, including several senators, had called for a comprehensive federal probe into Polymarket’s marketing practices. The Commodity Futures Trading Commission is also reportedly investigating Polymarket’s marketing tactics. The CFTC has historically maintained jurisdiction over prediction markets, and the agency has tangled with Polymarket before.