According to the April 30 announcement, Polymarket selected Chainalysis to deploy its first onchain surveillance system for real-time transaction monitoring and insider-trading detection to strengthen market integrity enforcement.
The claim is directly confirmed by the official BusinessWire press release ('Polymarket Selects Chainalysis to Deploy First-of-Its-Kind On-Chain Market Integrity Solution'), which is the primary source cited in the original claim. The Block independently corroborates the partnership with additional context. The BusinessWire release confirms the system covers trading activity, positions, and settlement data on the public blockchain, and is explicitly designed to detect insider trading and manipulation via a bespoke anomaly detection model. The claim's characterization as 'plans to launch' is slightly conservative — the announcement describes a selected and agreed partnership — but is otherwise accurate. No conflicting evidence was found.
Polymarket announced on April 30 that it selected Chainalysis to deploy its first onchain surveillance solution for trade monitoring and market integrity enforcement. The company said the system is designed to monitor blockchain transactions in real time and detect insider trading. The new announcement reinforces earlier reporting that Polymarket was rolling out an onchain integrity monitor with Chainalysis across its prediction markets, while adding the specific date, describing it as Polymarket’s first such surveillance system, and emphasizing real-time blockchain transaction monitoring.