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- Automated trading is changing how quickly traders can exploit South Korea's Kimchi premium price gap between Korean and overseas exchanges.
- A study found that 96.26 percent of consecutive USDT and XRP arbitrage trades between Bithumb and Binance occurred within five minutes.
- The study does not prove that bots dominate Bitcoin trading, and local transfer rules continue to limit capital movement.
Automated trading is changing how quickly traders can exploit South Korea’s Kimchi premium, the long-running price gap between crypto assets on Korean and overseas exchanges. New research found concentrated, rapid-fire arbitrage activity between Bithumb and Binance, while local transfer rules continue to limit how freely capital can move across borders.
Bitcoin still traded at a premium in South Korea over the weekend. On Oct. 11, prices across major Korean exchanges averaged about 1.31% above Binance.
Study Finds Signs of Automated Arbitrage
A June study by Woo-sung Kwon of the Gyeonggi Bukbu Provincial Police Agency analyzed 16,228 USDT and XRP arbitrage transactions between Bithumb and Binance from October 2024 through May 2025. It found that 96.26% of consecutive trades occurred within five minutes, while 72.3% took place within one minute.
Another 41.8% occurred within 10 seconds, with an average interval of 38 seconds. The top 10% of transactions accounted for more than 99.9% of total trading value.
“Such ultra-short consecutive trading patterns strongly suggest the use of automated trading systems.”
The study examined USDT and XRP rather than Bitcoin, so it does not prove that bots dominate Kimchi-premium trading in BTC. It does show how automation can exploit cross-exchange price gaps faster than manual traders.
Capital Controls Keep the Gap From Disappearing
South Korea’s transfer rules still make international arbitrage harder. Traders cannot always buy assets overseas, sell them domestically and freely recycle the proceeds across borders.
Transfers between Korean exchanges and overseas virtual-asset providers are subject to additional controls, while larger transfers can trigger reporting requirements.
Those frictions help explain why faster trading has not eliminated the Kimchi premium.
Bitcoin Premium Remains Positive
Bitcoin’s Korean premium averaged about 1.31% on Oct. 11, well below historical periods when the gap exceeded 10%. The current spread reflects a mix of local demand, exchange liquidity, foreign-exchange conditions, transfer restrictions and automated arbitrage.
That makes the premium a more complex market signal than before. Faster execution can compress temporary gaps quickly, so the spread is less useful as a standalone measure of South Korean retail enthusiasm.
