Korean bank renews year-long crypto exchange deal

TLDR

KB Kookmin Bank has renewed its real-name account deal with Bithumb for a full year, restoring stability to one of South Korea's major crypto trading venues.

1. KB Kookmin shifted from a cautious six-month extension to a full-year partnership with Bithumb after auditing its controls and seeing stronger customer metrics.
2. The renewal secures Bithumbs Korean won on-ramp, reinforcing South Koreas bank-dependent crypto infrastructure and signaling banks willingness to stay in the sector after major incidents.
3. Next, watch other exchange-bank renewals and the delayed Digital Asset Act, which could reshape Koreas real-name account system and future crypto banking rules.

Deep Dive

1. What Was Renewed

KB Kookmin Bank has renewed its real-name account partnership with Bithumb for a full year, reversing the shorter six-month term imposed in February after a serious operational error and legal scrutiny. During a promotional event, Bithumb mistakenly credited users with 2,000 Bitcoin each instead of 2,000 Korean won, briefly showing around 620,000 BTC in erroneous balances before reversal, and its headquarters was searched by police in a separate investigation. In the months since, KB Kookmin carried out an on-site audit of Bithumbs anti-money-laundering and internal control systems and cited deposit growth, larger demand deposit balances, and more monthly active users on its Star Banking app as reasons to commit to a year-long deal, according to the renewal report from KB Kookmin Bank and Bithumb.

2. Impact On Korean Crypto

Under Korean regulation, exchanges need an exclusive bank partner to offer real-name accounts for Korean won deposits and withdrawals, so losing that partnership effectively shuts down domestic fiat trading. A full-year renewal removes near-term survival risk for Bithumb and gives it a clearer runway for product and compliance planning. The move fits a broader pattern: Kakao Bank renewed with Coinone, Shinhan extended with Korbit, and Upbits renewal with K Bank is proceeding, showing banks are staying engaged with crypto rather than retreating.

3. What To Watch Next

Regulators had been expected to impose heavier sanctions via the Financial Intelligence Unit, but these have been muted while South Koreas broader Digital Asset Act is delayed. Until that law is in force, the current real-name account framework remains the core gatekeeper for crypto banking. Key signals to watch are future bank renewals or exits, any tightening of AML standards, and progress on the Digital Asset Act, all of which could change how easily exchanges access banking and how resilient Koreas crypto market structure is to shocks.

Conclusion

A year-long renewal between KB Kookmin Bank and Bithumb turns a previously tentative relationship into a more stable anchor for one of Koreas biggest exchanges. For crypto users, it underscores how critical bank partnerships and regulatory frameworks are to keeping fiat rails open, and why developments in Korean banking and digital asset law can ripple through liquidity and trading conditions far beyond a single venue.