Bithumb Takes Holdouts to Court Over $42 Billion Accidental Bitcoin Payout

South Korean crypto exchange Bithumb is escalating its recovery efforts by filing for court-approved asset freezes against users refusing to return funds from a catastrophic February payout error. The legal action targets the remaining 7 Bitcoin still unrecovered from the incident—a stark reminder of how quickly exchange mistakes can spiral into regulatory headaches.

What Went Wrong

On February 6, Bithumb's system malfunctioned during a promotional event, sending out 620,000 Bitcoin instead of 620,000 won ($420) to 249 event winners. The math was brutal: roughly 62 trillion Korean won ($42 billion) went out the door in minutes. While the exchange reversed most transactions within a few minutes of discovering the error, some recipients had already moved their funds off-platform.

Here's where it gets interesting for traders monitoring exchange risk: Bithumb claims it recovered 99.7% of the distributed Bitcoin on the same day. The remaining 0.3%—or 1,788 BTC—had already been sold by recipients. The exchange covered these losses using company reserves, a significant hit to their balance sheet.

The Holdout Problem

According to reporting from Korean outlet Chosun Biz, Bithumb has since recovered most of the sold funds through individual negotiations with affected users. However, a stubborn minority is refusing to return their portion. Their defense? They argue they bear no responsibility for returning assets due to Bithumb's operational error—essentially claiming finders keepers.

This is where South Korean law becomes relevant for anyone tracking crypto regulation globally. Under the jurisdiction's legal framework, mistakenly received assets typically qualify as "unjust enrichment" and must be returned. Industry observers tell us these holdouts likely face unfavorable court outcomes if litigation proceeds, making their refusal seem more like negotiating leverage than a defensible position.

Regulatory Fallout Tightens Control

The incident triggered a broader regulatory response that should concern every exchange operator in Asia's largest crypto market. This week, South Korea's Financial Services Commission mandated that all crypto exchanges reconcile their internal ledgers with actual asset holdings every five minutes—a dramatic tightening from previous practices.

The inspection revealed a critical gap: three of South Korea's five major exchanges were only reconciling balances once daily. That's a significant blind spot when millions in crypto transactions flow through platforms hourly. This reconciliation mandate represents the kind of operational friction that could slow high-frequency trading and add infrastructure costs for compliant exchanges.