Got Ripped Off by Polymarket, This Time the Bug is a "Time Warp"
Title: Polymarket's "Time Warp" Bug During Daylight Saving Transition Causes User Losses
On March 8, 2024, Polymarket, a prediction market platform, encountered a significant timing error due to the transition from Eastern Standard Time (EST) to Eastern Daylight Time (EDT) in the US. This annual clock adjustment, which skips the hour from 2:00 AM to 3:00 AM, disrupted the platform's automated event creation and settlement system.
The issue affected Polymarket's "Crypto Up or Down" hourly prediction markets for assets like BTC, ETH, SOL, and XRP. Events scheduled to run from 1:00 AM to 2:00 AM ET were impacted. Due to the time change, the platform's front-end and API incorrectly displayed the event duration as "March 8, 1-1 AM ET"—a logically impossible interval—instead of the correct "1:00 AM to 3:00 AM ET" (which still represents one actual hour).
This bug caused substantial problems for automated trading systems that rely on precise timing data from the API. One user, "@richrichardoz," reported losses exceeding $100,000 because their trading bot malfunctioned upon receiving identical start and end times. The user and others have called for Polymarket to switch its time standard to UTC (Coordinated Universal Time) to avoid such issues and to compensate affected users.
The incident highlights a critical design flaw in using local time (which is subject to bi-annual changes) instead of UTC, the global standard for financial systems. This ensures time remains consistent, monotonic, and unambiguous for automated processes. While the impact was limited, it underscores the need for prediction markets to adopt the rigorous engineering standards of traditional financial infrastructure as they scale. Polymarket had not issued an official response at the time of writing.
Odaily星球日报03/09 08:10
