Bitcoin Reels From South Korea Ban Shock While Ethereum Smashes All-Time High at $1,392

January 12, 2018 will be remembered as one of the most chaotic days in cryptocurrency history. Bitcoin was still reeling from a dramatic $2,000 plunge triggered by South Korea’s threat to ban crypto exchanges, while Ethereum — defying the broader market turmoil — surged to a new all-time high of $1,392. The contrasting fortunes of the two largest cryptocurrencies laid bare the complex dynamics of the late-2017 crypto boom.

TL;DR

• Bitcoin dropped $2,000 on January 11 after South Korea’s justice minister announced plans for a crypto exchange ban
• BTC was trading around $13,980 on January 12, down significantly from December’s near-$20,000 peak
• Ethereum simultaneously hit its all-time high of $1,392 on January 12 — a record that would stand for nearly three years
• South Korean president’s office walked back the ban announcement, calling it one of several options under consideration
• Total crypto market cap stood at approximately $735 billion amid extreme volatility

South Korea’s Bombshell Sends Markets Into Freefall

The catalyst for the chaos came on January 11, when South Korean Justice Minister Park Sang-ki told reporters that the government was preparing legislation to ban cryptocurrency trading through exchanges. The announcement was devastating in its immediate impact: Bitcoin plunged 13.5% in a matter of hours, dropping from approximately $14,890 to below $13,000 on Coinbase, according to market data.

The impact was even more severe in South Korea itself, where Bitcoin traded at a persistent premium of roughly 30% above international prices due to intense local demand. The so-called “kimchi premium” collapsed as the local BTC price crashed as much as 21%. Ripple’s XRP fell 11%, and the broader altcoin market experienced sharp selling pressure.

The news did not come entirely out of nowhere. South Korean authorities had been tightening their stance on cryptocurrencies throughout December 2017. Tax authorities and police had raided the offices of major exchanges Bithumb and Coinone over allegations of tax evasion. Korea’s prime minister had publicly warned that cryptocurrencies might “corrupt the nation’s youth,” and the finance ministry was actively studying a cryptocurrency tax framework.

Government Walks Back the Ban — But Damage Is Done

Within hours of Park’s bombshell, President Moon Jae-in’s office moved to calm the situation. A presidential spokesman told reporters that the ban proposal was just one of several options being considered and that no final decision had been made. The government had previously outlined multiple regulatory approaches on December 28, including the possibility of allowing exchanges to continue operating under stricter supervision.

Despite the clarification, the damage to market confidence was significant. Thomas Glucksmann, head of APAC business development at cryptocurrency exchange Gatecoin, noted that the Korean government had been signaling its intent to control speculative activity for months. “This isn’t really too much of a surprise,” he told Bloomberg.

By January 12, Bitcoin had partially recovered to around $13,980, but the incident underscored a critical vulnerability: the cryptocurrency market’s dependence on regulatory decisions in a handful of key jurisdictions. South Korea accounted for a substantial share of global crypto trading volume, and any hint of a crackdown could move prices dramatically.

Ethereum’s Historic Surge to $1,392

While Bitcoin was absorbing the South Korean shockwave, Ethereum was writing its own chapter in crypto history. On January 12, ETH reached an all-time high of $1,392 — a staggering milestone that would not be surpassed for almost three years. Ethereum was trading at approximately $1,273 on CoinMarketCap’s daily snapshot, having gained over 27% in the previous seven days.

Ethereum’s resilience amid Bitcoin’s decline reflected a broader trend of the era: the so-called “flippening” narrative, where Ethereum’s total market capitalization and transaction volume were gaining ground on Bitcoin’s. The Ethereum ecosystem was booming with Initial Coin Offerings (ICOs), many of which required ETH to participate. This created sustained buying pressure even as Bitcoin faced regulatory headwinds.

The broader altcoin market also showed remarkable strength. Cardano (ADA) was trading at $0.897 with a market cap of over $23 billion. XRP sat at $2.04, Bitcoin Cash at $2,620, and NEM at $1.44. The total cryptocurrency market capitalization was approximately $735 billion — astronomical by any historical standard, though significantly below the $830+ billion peak reached in early January.

Kodak’s Bizarre Crypto Moment

The surreal nature of the January 2018 crypto market was perhaps best exemplified by Eastman Kodak. Just days earlier at CES 2018, the photography icon had announced both KodakCoin — a cryptocurrency for licensing photographs — and the KashMiner, a Bitcoin mining machine rental program. Kodak’s stock price nearly tripled, gaining 120% on the crypto announcements alone.

The Kodak episode became a symbol of the era’s excess: a legacy company with no blockchain expertise suddenly pivoting to cryptocurrency and seeing its market valuation soar by hundreds of millions of dollars. It illustrated the degree to which crypto fever had permeated mainstream consciousness — and the degree to which investors were willing to chase anything with “coin” or “blockchain” in its name.

Why This Matters

The events of January 12, 2018 represent a microcosm of the entire 2017-2018 crypto cycle. The market was simultaneously driven by genuine technological excitement (Ethereum’s smart contract platform, growing institutional interest), rampant speculation (KodakCoin, ICO mania), and regulatory uncertainty (South Korea’s ban threat). Bitcoin’s dramatic plunge on regulatory news demonstrated that despite its decentralized nature, the cryptocurrency market remained highly sensitive to government actions in key trading nations.

Ethereum’s simultaneous all-time high also highlighted the diversification within the crypto market. While Bitcoin was often treated as a single asset class, the reality was that different cryptocurrencies could move in very different directions based on their own fundamentals and narratives. ETH’s $1,392 peak would not be seen again until late 2020, making January 12, 2018 a pivotal date in Ethereum’s price history.

For investors and observers, the lesson was clear: in crypto markets, euphoria and panic can coexist simultaneously, sometimes within the same 24-hour period.

Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency markets are highly volatile. Always conduct your own research before making investment decisions.