The Bank of Japan acted this morning, raising the benchmark interest rate from 0.5% to 0.75%. Every point is being scrutinized by the market under a magnifying glass. The logic behind this is actually quite simple—Japan's historically low interest rates have long been the hub for global arbitrage trading. You borrow cheap yen, then pour it into high-risk assets like Bitcoin and Ethereum to profit from the spread.

Once the central bank signals a rate hike, the game rules are instantly rewritten. The yen appreciates, and leveraged traders start to panic. Yesterday’s rate hike announcement caused Bitcoin to drop directly from around $86,000 to below $84,000, with the futures market already rehearsing this move in advance. The market’s logical chain is clear: Yen appreciation → massive margin calls → sell-off of crypto assets → liquidity tightening → Asian stock markets also wobble. Some even calculated that this move could push Bitcoin down to $74,000.

But the story isn’t that bleak. The rate hike was actually within expectations, and the Bank of Japan emphasized it as a gradual adjustment, avoiding any sudden shocks. As a result, the market overreacted. By the afternoon, Bitcoin rebounded, surpassing $87,000, and Ethereum followed suit with gains. Risk appetite in Asia seems to have recovered, and global stock markets edged higher. This is a classic case of "buy the rumor, sell the fact"—markets love to scare themselves.

In the short term, this rate hike is a double-edged sword. Selling pressure definitely exists, and volatility is not small—beginners should not go all-in. But the rebound is already visible, and future developments will depend on how economic data unfolds.