I just came across something interesting in the prediction markets, and the thin line was really not hard to see for those who look carefully.

Last week, six accounts on Polymarket were discovered that earned about $1.2 million by correctly betting on a U.S. attack on Iran on February 28. What stands out: all these wallets were created in February, funded through similar channels, and had no activity other than this one position. Blockchain analysis company Bubblemaps revealed the connections in a visual map — the pattern was actually quite clear if you knew where to look.

The timing was suspiciously precise. Most accounts were funded and bought "Yes" shares just hours before Trump gave his speech and the attacks actually took place. One account bought more than 560,000 shares at about 10.8 cents each — which netted nearly $560,000 when the market closed at $1. Another account made six figures in profit with 150,000 shares at 20 cents.

The contract ultimately attracted nearly $90 million in trading volume, part of over $529 million since December. The market moved sharply — Bitcoin's value dropped while oil futures on Hyperliquid surged due to the regional conflict's effects.

This is happening at a time when regulators are seriously considering how to address insider trading on prediction markets. A competitor — a large registered prediction market — has already suspended two users and fined them, including an employee of a well-known content creator who traded based on non-public information. They have investigated over 200 cases and have a dozen ongoing investigations. The CFTC has already issued warnings that this kind of trading may violate U.S. laws.

But here’s the funny part: traders on Polymarket even appeared to be trading internally on a market specifically designed to detect insider trading. A blockchain detective announced they would publish their findings on a crypto platform, and suddenly a Polymarket contract appeared predicting which company would be named. Twelve wallets heavily bet on the correct answer before the reveal.

The metadata traces are becoming clearer as blockchain analysis improves. What was once hidden can now almost automatically become visible to those who know where to look.