Polymarket Targets Insider Trading With New On-Chain System

Polymarket has tapped blockchain analytics firm Chainalysis to deploy an on-chain solution that monitors trading activity and enforces its Market Integrity Rules across the prediction market platform.

The system centers on a detection model built on Chainalysis Data Solutions. It is calibrated to identify patterns that suggest non-public information on the platform.

How the On-Chain Detection Model Works

According to the press release, the agreement combines Chainalysis’ investigative tools, threat prevention capabilities, and professional services for the deployment and training of Polymarket’s staff. The framework builds on a multi-layered monitoring system already operating across the venue.

“This sends a clear signal: insider trading, in addition to all types of fraud and market manipulation, is not welcome on Polymarket, and those who attempt it will be identified,” the press release read.

Every trade, position, and settlement on Polymarket is recorded on a public blockchain. That structure allows live anomaly detection.

Polymarket CEO Shayne Coplan tied the deal to the platform’s transparency-first design.

“Polymarket was built on-chain because transparency matters, and our platform shows what markets can look like when trades are open, traceable, and accountable by design,” he said.

Why Polymarket Is Tightening Insider Trading Surveillance Now

Suspected insider trading on prediction market platforms has become a growing concern, drawing scrutiny from both the crypto community and lawmakers. 

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Platforms have stepped up efforts to counter this. In addition to the new initiative, Polymarket published updated Market Integrity Rules in March covering three prohibited categories of insider trading conduct. 

Rival platform Kalshi has similarly bolstered its internal capabilities and policies to address insider trading and market manipulation.

Regulators and law enforcement have moved in parallel.Authorities recently charged a US Army soldier for allegedly using confidential government information to profit from bets on markets tied to the capture of Venezuelan leader Nicolás Maduro. The defendant has pleaded not guilty to the fraud charges.

In a parallel move, the US Senate unanimously approved a resolution barring sitting senators from trading on prediction markets. Together, these developments signal a sector-wide push to clamp down on insider trading as prediction markets scale into the mainstream.

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