Bithumb's $40 Billion Bitcoin Blunder: South Korean Exchange Accidentally Airdrops Massive BTC Rewards, Triggers Selloff Before Swift Recovery

 In one of the most astonishing operational errors in cryptocurrency history, South Korean exchange Bithumb accidentally transferred approximately 620,000 bitcoins—valued at more than $40 billion (and up to $44 billion at peak prices)—to its users as part of a routine promotional event.

The mistake occurred on Friday when the platform intended to distribute small cash rewards of around 2,000 Korean won (roughly $1.37) or more to select participants. Instead, due to what appears to be a critical unit error—entering the reward in bitcoin rather than won—winners received at least 2,000 BTC each. This massive over-distribution affected 695 customers and briefly caused chaos on the exchange.

Bithumb acted quickly, restricting trading and withdrawals for the impacted accounts within just 35 minutes of the erroneous transfers. The exchange issued an apology on Saturday, confirming it had successfully recovered 99.7% of the mis-sent bitcoins. The remaining portion represents a tiny fraction of the total, and the platform stated that the issue has been largely resolved.

The incident triggered a sharp but temporary selloff on Bithumb, with Bitcoin prices on the exchange dropping as much as 17% (to around 81.1 million won at one point) as recipients rushed to liquidate their unexpected windfalls. Prices later stabilized and recovered, aligning more closely with global markets.

This episode highlights the high-stakes nature of cryptocurrency operations, where even minor input mistakes can lead to enormous financial implications. Bithumb, one of South Korea's major exchanges, emphasized that user funds remain secure and that the error was isolated to the promotional distribution.

No further details on potential disciplinary actions, compensation, or how the unit mix-up occurred have been released yet, but the swift recovery underscores the exchange's robust internal controls despite the initial slip-up.

As the crypto industry continues to mature, such incidents serve as stark reminders of the need for rigorous verification processes in handling digital assets of immense value.