South Korea's highest court has settled a long-standing legal gray area: Bitcoin stored on licensed exchanges can be seized under the Criminal Procedure Act. The ruling, delivered in December 2025, rejects the argument that cryptocurrency's intangible nature shields it from confiscation.
The case originated from a 2020 money laundering investigation targeting Mr. A. Authorities seized 55.6 BTC from his exchange account, then valued at roughly 600 million KRW (approximately USD 460,000). Mr. A argued Bitcoin is not a "physical object" and therefore falls outside property seizure rules.
Lower Courts and Supreme Court Unanimous
Both the district court and appellate court disagreed, ruling that Bitcoin carries real economic value and can be controlled by its owner via private keys or wallets. The Supreme Court dismissed Mr. A's final appeal, declaring that even when held on exchange wallets, Bitcoin qualifies as an electronic asset subject to seizure. This marks the first time the top court explicitly addressed exchange-held crypto in a seizure context.
Market Reach: Upbit and Bithumb Dominate
The ruling directly impacts South Korea's two largest crypto exchanges. Upbit serves about 53% of the country's 10.17 million crypto users, while Bithumb holds roughly 37%. Combined, over 9 million accounts fall under the new legal clarity. Legal professionals view the decision as a precedent-setting tool for future crypto crime investigations, trials, and regulatory adjustments.
Building on Earlier Precedents
The Supreme Court had previously recognized Bitcoin as intangible property subject to confiscation if illegally obtained (2018), and later confirmed it as a virtual asset that can be transferred, stored, and traded electronically (2021). The new ruling extends these principles: Bitcoin held on exchanges can now be seized directly under criminal procedure, without needing the owner's consent or platform cooperation.
Globally, similar judicial movements exist. The Madras High Court in India, in the Rhutikumari v. Zanmai Labs case, recognized cryptocurrency as property with legal protection equivalent to tangible assets. However, South Korea's ruling carries sharper implications for retail investors due to its direct focus on exchange custody.
Three-Layer Implications
For holders: Centralized exchange storage now carries a tangible legal risk. Users may accelerate adoption of self-custody wallets for greater control, especially when holding substantial balances. The barrier for authorities to seize exchange-stored coins has been lowered.
For law enforcement: Investigations into fraud, money laundering, and other crypto-related crimes gain a straightforward legal instrument. Seizure processes no longer require indirect methods like freezing accounts or negotiating platform compliance.
For the market: Bitcoin and other virtual assets gain stronger judicial recognition as property with economic value. Yet, short-term trust shifts among South Korean users could alter exchange liquidity patterns. With roughly a third of the population holding digital assets, this ruling is expected to reshape how individuals store and protect their cryptocurrency, pushing self-custody discussions to the forefront.