In South Korea, a cryptocurrency hub, 15 altcoins are experiencing significant increases in trading volume. Here's what you need to know. South Korea’s largest cryptocurrency exchanges, Upbit and Bithumb, have seen remarkable trading volumes in some altcoins over the past 24 hours. A combined analysis of data from both exchanges reveals a concentration of activity, particularly in Lisk (LSK), VeThor (VTHO), and Steem (STEEM).