Bithumb Scrambles to Recover $40bn Bitcoin Sent to Users by Mistake

On February 6, 2026, South Korea’s major crypto exchange Bithumb shocked the market after accidentally sending $40 billion worth of Bitcoin to user accounts. What started as a small promotional payout quickly turned into one of the largest operational errors in crypto history. 

Within minutes, confusion spread across trading platforms as Bitcoin prices dropped sharply and users rushed to sell. Bithumb froze affected accounts and launched an urgent recovery effort, but not all funds were retrieved. 

The incident raised serious questions about exchange security, internal controls, and regulatory oversight. For investors and regulators alike, this event became a powerful reminder of how a single technical mistake can shake the entire crypto ecosystem.

What Exactly Happened? Inside Bithumb’s $40bn Bitcoin Blunder

The Promotion That Triggered the Chaos

On February 6, 2026, Bithumb launched a promotional campaign to reward users with ₩2,000 ($1.40) in cash bonuses. However, a staff member entered the reward value in Bitcoin instead of Korean won, triggering a massive system error. As a result, the platform credited users with 620,000 BTC instead of ₩620,000, creating one of the biggest payout mistakes in crypto history.

I am the Chief Operations Officer at Bithumb.

South Korea's second-largest cryptocurrency exchange.

On Thursday, we ran a promotional event.

A "lucky box" campaign.

Very popular in Korea.

Users complete tasks.

Users receive rewards.

Small rewards.

2,000 Korean Won.… pic.twitter.com/qLCS3yYRpQ

— Peter Girnus 🦅 (@gothburz) February 8, 2026

This internal data-entry mistake caused 695 users to suddenly receive 2,000 BTC each, shocking traders and triggering immediate market panic.

How Big Was the Error?

The scale of the error stunned the global crypto community:

• Total Bitcoin distributed: 620,000 BTC
• Market value: Over $40-44 billion
• Affected accounts: 695
• Funds recovered: 99.7%
• Unrecovered BTC: ~1,788 BTC (≈ $9 million)

Bithumb detected the mistake within 35 minutes and froze trading and withdrawals across affected accounts. However, 86 users sold or transferred portions of the Bitcoin before the freeze, causing permanent losses .

Timeline of Events: How the Crisis Unfolded

• February 6, 2026 (7:00 PM KST): Error occurs during promotional payout distribution.
• Within 35 minutes: Bithumb blocks withdrawals and trading for 695 affected accounts.
• Same evening: Bitcoin price on Bithumb plunges 17%, hitting ₩81.1 million.
• February 7-8, 2026: Financial Supervisory Service (FSS) launches investigation.
• February 9, 2026: Emergency parliamentary hearing scheduled.
• Current status: 99.7% of funds recovered, regulators demand stricter controls .

This rapid timeline highlights how minor human errors can escalate into system-wide financial crises.

Market Impact: How the Mistake Shook Bitcoin Prices

The sudden Bitcoin inflow triggered intense panic selling. Within minutes, Bitcoin prices on Bithumb dropped 17%, falling far below global market averages.

Key impacts included:

• Temporary liquidity shock
• Short-term price dislocation
• Forced platform trading freeze
• User losses from panic selling

Bithumb later promised full compensation plus a 10% trading bonus to affected traders. The exchange also confirmed that around ₩1 billion ($760,000) in losses were caused by panic trades executed during the crash .

Why Regulators Stepped In Immediately?

South Korea’s Financial Supervisory Service (FSS) labeled the event as “catastrophic” and initiated a full-scale investigation into Bithumb’s internal systems.

Why Did Regulators React So Strongly?

• The error exposed severe weaknesses in transaction validation systems.
• Regulators feared systemic risks across crypto exchanges.
• It highlighted vulnerabilities in automated asset handling frameworks.

The FSS stated that new regulations would be introduced to strengthen internal controls. This follows the Virtual Asset User Protection Act (2024), passed after the Terra-Luna collapse, which already tightened oversight .

Legal Gray Area: Can Bithumb Force Users to Return Bitcoin?

Is Keeping Mistaken Bitcoin a Crime in South Korea?

Legally, the situation is complex. Under civil law, Bithumb can demand returns under unjust enrichment principles. However, criminal prosecution is uncertain.

Bithumb Sent $44B in BTC by Mistake, Then Asked for It Back. What happens if it’s $ETC?

{•• What you’re about to read maybe hard to accept but that’s exactly how blockchain should work ••}

This struck me instantly:
A massive accidental transfer, and the exchange begged for… pic.twitter.com/MD0w8KGfY2

— Tox (@0xToxo) February 9, 2026

In a 2021 Supreme Court ruling, South Korea declared that cryptocurrency does not qualify as legal property, meaning mistaken transfers may not count as theft.

This legal gap leaves $9 million still unrecovered, as some users moved funds off-platform or converted them into other assets .

What This Incident Reveals About Crypto Exchange Risks?

This case highlights that operational errors pose risks equal to cyberattacks.

Key System Failures Exposed

• Weak manual input validation
• Lack of real-time anomaly detection
• No multi-layer approval mechanism
• Insufficient fail-safe transaction controls

Experts warn that without AI-powered transaction monitoring systems, such mistakes may reoccur. Modern platforms now rely on AI stock and crypto analysis tools to identify abnormal transaction volumes instantly and prevent massive payout errors before execution.

How Bithumb Is Rebuilding Trust After the Crisis?

Bithumb moved quickly to repair its public image:

• Issued a formal apology
• Promised full compensation
• Launched internal system upgrades
• Introduced multi-level transaction approvals
• Increased cooperation with regulators

The company also announced independent audits and stronger employee verification protocols to restore confidence. Its main objective is to rebuild trust and retain market share against rivals like Upbit, South Korea’s largest exchange .

Conclusion: A $40bn Wake-Up Call for the Global Crypto Industry

The Bithumb incident is now regarded as one of the largest operational mistakes in financial technology history. It proved that human error remains a critical vulnerability, even in advanced blockchain systems. The event also triggered stronger regulatory scrutiny and renewed demands for automated safeguards, transaction audits, and AI-driven validation systems. 

For investors, this case reinforces the importance of platform reliability, security governance, and regulatory compliance. Moving forward, the crypto industry may treat this $40bn blunder as a defining lesson for system safety and financial responsibility.

Frequently Asked Questions (FAQs)

Disclaimer:

The content shared by Meyka AI PTY LTD is solely for research and informational purposes. Meyka is not a financial advisory service, and the information provided should not be considered investment or trading advice.