Bithumb Blames System Flaws for $40 Billion Bitcoin Error
South Korea’s crypto exchange Bithumb said serious internal system flaws allowed an erroneous transfer of more than $40 billion in bitcoin during a promotional event last week, prompting regulatory scrutiny and market volatility. The exchange accidentally distributed about 620,000 bitcoins to customers instead of 620,000 won ($426), triggering a sharp 17% drop in bitcoin prices on its platform.
Chief Executive Lee Jae-won told lawmakers the error was exacerbated by a roughly 24-hour processing lag that delayed balance updates. The mistaken transfer amounted to roughly 15 times the exchange’s bitcoin holdings. Internal safeguards—including checks comparing transfer volumes with actual reserves—failed, and the assets were not earmarked in a separate account to ensure transaction safety.
Most of the bitcoins have since been recovered, though regulators said 1,786 coins were sold before accounts were frozen. Authorities stated that customers who sold the mistakenly credited assets are legally required to return them. The incident has sparked criticism in parliament over oversight failures in one of the world’s most active crypto markets.
The head of the Financial Supervisory Service said the episode underscores the need for stronger regulatory frameworks, adding that virtual asset platforms should ideally face oversight similar to banks, though current laws do not yet provide that authority.



