A circulating video and repeated winning bets have raised questions about whether a Polymarket prediction market was improperly influenced through direct interference with a temperature sensor.
Polymarket is facing allegations that users manipulated a temperature-based prediction market by using a hair dryer to heat a sensor and push the measured reading into a higher settlement range. The claims gained attention after a video of the incident circulated alongside reports that someone had repeatedly placed winning bets on the correct high-temperature band in advance. The case highlights a known risk in oracle-dependent markets, where real-world data inputs can become a point of failure if the underlying measurement process is vulnerable to tampering.