Crypto-based prediction market Polymarket has tapped blockchain analytics firm Chainalysis to monitor trading activity and enforce its market rules as it works to address concerns about insider trading and market integrity.
Chainalysis brings a range of tools, including investigative software and onchain monitoring systems, to flag suspicious behavior, based on a model designed to identify patterns consistent with traders acting on non-public information, the firms announced Thursday.
The move comes amid growing scrutiny of prediction markets. Critics have argued that platforms such as Polymarket can be vulnerable to insiders – such as political operatives or company employees – who place informed bets before information becomes public. In traditional finance, such activity is illegal and closely monitored. In crypto-based markets, enforcement has been less clear.
Polymarket’s answer is to lean into blockchain’s transparency. Because every trade is recorded on-chain, activity can be tracked and analyzed after the fact. By layering Chainalysis’ data tools on top, the company aims to detect suspicious trades in real time and, if necessary, share evidence with regulators.
Simply put, Polymarket brings in a kind of digital police force. The goal is to show that even in a decentralized environment, rules can be enforced. The broader goal is to reposition Polymarket as a credible financial platform rather than a crypto betting site.
“Polymarket was built on the chain because transparency matters, and our platform shows what markets can look like when trades are open, traceable and accountable by design,” said CEO Shayne Coplan.
Coplan has argued that prediction markets serve a broader purpose than speculation. He described them as “a very useful thermometer for the world”, with prices reflecting the likelihood of real-world outcomes, at an event in New York this week.
Yet this utility depends on trust. If users believe that markets are being skewed by insiders, prices become less reliable. This risk has grown as Polymarket has expanded, gaining mainstream attention during events such as elections and attracting both retail and institutional interest.
Coplan has emphasized building something durable, focusing on products that “last” instead of chasing short-term trends.
