BTC Slides Under $63K as KOSPI Plunges 10% in Risk-Off Rout

South Korea's benchmark KOSPI stock index plunged 9.99% to 8,203.84 on Tuesday, triggering a market-wide trading halt in its steepest decline since March 4. Samsung Electronics and SK Hynix each lost more than 12% as overseas investors retreated from the semiconductor shares that had carried the…