South Korea’s central bank wants crypto exchanges to operate more like stock markets. They want things like automatic brakes that kick in when prices go haywire. The push comes directly in response to what is arguably the most expensive fat-finger error in crypto history, one that sent an entire exchange into a tailspin for roughly half an hour and exposed gaping holes in how digital asset platforms manage basic operational risk.
On Feb. 6, Bithumb accidentally distributed 620,000 BTC, worth about $43 billion, across hundreds of user accounts as part of a promotional campaign giveaway. The error stemmed from a staff member entering the payout unit as BTC instead of Korean won.
What was supposed to be a modest “Random Box” promotion, distributing a few thousand won per winner, became something else entirely when one wrong keystroke transformed the payout into Bitcoin. At the time, the exchange reportedly held only about 46,000 BTC in actual reserves, meaning the phantom balances it had created amounted to roughly 13 to 14 times what it actually owned.
The damage happened fast. Some users immediately started selling the wrongly credited Bitcoin just minutes after the deposits appeared. The BTC/KRW trading pair on Bithumb dipped as much as 17 percent due to the sudden influx of supply.
Bithumb eventually recovered 99.7 percent of the falsely distributed Bitcoin and 93 percent of the 1,788 BTC that users sold before the freeze, though around 125 BTC remained out of its reach. The exchange said it would compensate affected users at 110 percent of their losses and pledged to set up a 100 billion won user protection fund.
The bank of Korea’s response
Two months later, South Korea’s central bank is drawing its own conclusions, and they go beyond Bithumb specifically. The Bank of Korea’s (BOK) Payment and Settlement report attributed the incident to a lack of internal controls and regulation within the digital asset market compared to traditional financial institutions, and called for tougher measures that would impose legal responsibilities on crypto exchanges comparable to those faced by conventional finance.
The central bank’s proposed fix is a “circuit breaker” mechanism, the same kind of trading halt used by the Korea Exchange in equity markets when prices move too sharply in a short window.
Under the BOK’s suggestion, exchanges would be required to automatically suspend trading when crypto prices experience sudden, abnormal fluctuations. It also called for systems capable of detecting and blocking “erroneous payments caused by human error” before they propagate through a platform.
The Bank of Korea also wants exchanges to maintain automatic reconciliation systems that continuously compare a platform’s internal ledger against its actual onchain holdings, flagging discrepancies in real time rather than discovering them after the fact.
The BOK pointed out that Bithumb took 20 minutes to spot the error and failed to prevent the Bitcoin from being moved or sold, widening losses for users. An automated balance-checking system, the argument goes, would have caught the mismatch before anyone had a chance to sell.
The broader context matters here. South Korean lawmakers are currently working on the Digital Asset Basic Act, the country’s second comprehensive crypto legal framework, and the BOK has urged that its suggested circuit breaker measures be incorporated into that legislation.
The report noted that the crypto industry currently lacks the kind of internal control mechanisms that established financial institutions take for granted, and that similar incidents could occur at other exchanges without structural reform.
A crisis that keeps unfolding
For Bithumb, the fallout hasn’t stopped at regulatory criticism. The exchange has recently requested a court to freeze 7 BTC, worth roughly $496,000, held by users who refused to return the mistakenly distributed funds, pursuing the recovery through provisional seizure.
Most recipients voluntarily returned the Bitcoin, but a small group has insisted they are under no obligation to give it back. Courts typically require the return of mistakenly transferred assets in kind, meaning those who sold the BTC and haven’t repurchased it could face significant losses, given how much Bitcoin’s price has risen since February.
The incident has also reportedly prompted the ruling Democratic Party to formalize plans to impose a 15 percent to 20 percent cap on individual stakes in cryptocurrency exchanges. Investigations have been extended to other South Korean exchanges, including Upbit and Coinone, as regulators use the Bithumb case as a trigger for broader scrutiny of the industry.
And Bithumb itself, which had been planning a public listing, has pushed back its IPO to 2028, a delay that says something about how the exchange views its immediate prospects under intensified regulatory scrutiny.
One South Korean lawmaker put it plainly after the incident: “If an exchange operates by merely shifting numbers on an internal ledger without actual o-chain movements, it means they could be selling bitcoin they don’t even own. This effectively sets the stage for a ‘bank run’ and total market collapse.”
That framing may be somewhat hyperbolic, but it captures why regulators are taking this seriously. Crypto exchanges in South Korea handle enormous volumes from millions of retail investors.
The idea that a single employee’s data entry mistake can send a platform into emergency mode, and trigger a localized flash crash in the process, is not the kind of thing a central bank can easily ignore, especially with comprehensive legislation in the works.
Whether “circuit breakers” can meaningfully address that kind of risk is a legitimate question. Stock market circuit breakers are designed for price volatility, not for phantom balances generated by internal ledger errors.
The two problems are related but not identical. What the Bank of Korea appears to be reaching for is something broader: a culture of operational discipline at crypto exchanges that currently, by its own assessment, simply isn’t there.