South Korean crypto exchange Bithumb has filed for a provisional attachment to freeze assets tied to users who have yet to return 7 BTC that remain missing after a February payout error, a move aimed at supporting a civil lawsuit to recover the funds. The court-backed measure was reported by Chosun Biz on Thursday and marks the latest chapter in a highly visible post-mortem of the incident.

On February 6, the exchange intended to distribute a total of 620,000 won ($420) to 249 event winners. Instead, a system input error sent out 620,000 BTC, briefly valuing the mistaken transfers at roughly 62 trillion won ($42 billion). Bithumb reversed the transactions within minutes, but a portion of the funds had already moved, prompting the recovery effort that continues to this day.

Following the incident, Bithumb announced it had recovered 99.7% of the funds on the same day. The remaining 0.3%, or 1,788 BTC, had already been sold, with the company covering that shortfall from its reserves. As of the latest reporting, the exchange has been contacting affected users individually and recouping most of the proceeds from those sales, though a small number of recipients have refused to return the balance, arguing they are not responsible for the erroneous transfers, according to Chosun Biz’s account.

Cointelegraph reached out to Bithumb for comment but did not receive an immediate response at the time of publication.

Key takeaways

• The provisional attachment targets users who have not returned 7 BTC missing from a February payout error that briefly distributed 620,000 BTC.
• The incident involved a mistaken transfer valued at about 62 trillion won ($42 billion) after an input error in the payout process.
• Bithumb says it recovered 99.7% of the funds on the same day; 1,788 BTC were sold, with reserves used to cover the remaining shortfall.
• Some recipients have refused to return the remaining funds, but South Korean law generally treats mistaken transfers as unjust enrichment and expects return of the assets.
• Regulators have moved quickly to tighten controls, with the Financial Services Commission ordering exchanges to reconcile ledgers with actual holdings every five minutes after the incident.

Provisional measures and the legal path forward

The filing for provisional attachment underscores Bithumb’s intent to press claims ahead of a civil case. By freezing assets tied to non-compliant recipients, the exchange aims to secure a path to full recovery while the broader dispute unfolds in court. The approach reflects a cautious, rule-driven stance common in asset recovery efforts involving mistaken transfers, where the balance between user rights and corporate accountability is tested in real time.

From rapid reversal to regulatory tightening

The February payout debacle prompted broader scrutiny beyond the immediate recovery efforts. In response, South Korea’s Financial Services Commission ordered exchanges to reconcile their internal ledgers with actual holdings at five-minute intervals to accelerate detection of discrepancies and prevent delays in addressing errors. Earlier assessments had found that three of the five major domestic exchanges performed reconciliations on a daily cadence, creating a potential lag between misentries and corrective action.

The rapid regulatory nudge comes as the industry continues to digitize, complicate, and democratize access to crypto markets in a densely regulated environment. While the Bithumb incident centered on a single promotional payout, the reforms are framed as systemic safeguards to minimize spillover risk across exchanges and users alike.

What readers should watch next

Market participants and retail users will want to monitor the court’s handling of the provisional attachment and any subsequent rulings on the remaining unreturned funds. The case could shape how exchanges structure payout processes, how aggressively they pursue mistaken transfers, and how the legal framework delineates responsibility when automated systems misfire. In the near term, observers should also track how the five-minute reconciliation rule influences incident responses and the speed at which authorities and firms close gaps in asset verification and recovery.