A Man is Using a Hairdryer to “Manipulate” Polymarket’s Paris Temperature-Related Market and Has Made a $34,000 Profit

BlockBeats News, April 23rd, according to crypto KOL @aaronjmars, a man used a hairdryer to interfere with a temperature sensor to manipulate the "Paris Temperature" market on Polymarket and profit $34,000.

It is reported that Polymarket settles the Paris temperature based on a sensor from Météo France (the French Meteorological Agency) near the runway of Charles de Gaulle Airport, which is basically unattended.

The trader bought at a very low price an extremely unlikely outcome (e.g., when everyone predicted 18°C, he bought "22°C"), as no one thought it would actually happen.

He then went to the sensor and briefly heated the surrounding air with a portable heat source, causing the reading to briefly spike to be enough to become the day's high temperature.

A few minutes later, the temperature returned to normal, but the market had settled in his favor. He successfully cashed out, conducting this scheme on April 6th and April 15th until the French Meteorological Agency discovered the manipulation and filed a lawsuit.