Story perspectives

Police Probe Paris Weather Sensor Tampering Linked to Crypto Bets

4/24/2026

Summary

Police Probe Sensor

Police opened an investigation into tampering of a Météo-France sensor at Paris-Charles de Gaulle after spikes matched Polymarket payouts.
Sensor rose above 21 °C on April 6 and to 22 °C on April 15, triggering settlements.
Traders earned $21,000 and $16,000 while three wallets collected $280,000 betting a 19 °C reading on April 15.
Météo-France filed a complaint with the Roissy Air Transport Gendarmerie Brigade.
Vitalik Buterin urged to require three independent data feeds after incident.

Summary

States Suspend Betting

Several U.S. states have suspended weather-based predictive betting after the incident.
Experts say the case reveals a systemic flaw because crypto platforms rely on a single physical feed.
The Roissy sensor was later found modified, confirming physical access to the device.
Météo-France’s complaint could trigger new penalties for tampering with public-service data.
The controversy has revived calls for multi-oracle solutions to protect on-chain contracts.

History

Historical Context

In 2013, the U.S. Supreme Court's ruling in United States v. Jones underscored the critical need for data privacy, coinciding with Météo-France's sensor tampering incident that allowed traders to exploit manipulated weather data. This prompted Météo-France to file a complaint, potentially leading to new regulations and calls for multi-oracle solutions to enhance data integrity in predictive betting platforms.

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Police Probe Sensor

Police opened an investigation into tampering of a Météo-France sensor at Paris-Charles de Gaulle after spikes matched Polymarket payouts.
Sensor rose above 21 °C on April 6 and to 22 °C on April 15, triggering settlements.
Traders earned $21,000 and $16,000 while three wallets collected $280,000 betting a 19 °C reading on April 15.
Météo-France filed a complaint with the Roissy Air Transport Gendarmerie Brigade.
Vitalik Buterin urged to require three independent data feeds after incident.

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