JPYC, a stablecoin pegged one-to-one to the Japanese yen, briefly reached 37 won after listing on South Korean exchange Upbit. The move prompted criticism of Upbit’s listing system, including the absence of maximum bid and ask limits for a stablecoin, limited advance guidance and the opening of trading before deposits and withdrawals were enabled. JPYC was recently trading around 26 won on Upbit, up 112%, with volume exceeding 120 billion won.