Upbit completes server maintenance, resumes trading from 05:00 Beijing time

The early resumption matters less than the mechanics attached to it: canceling buy orders above and sell orders below the last pre-maintenance price effectively resets the order book around that reference point, which can produce a sharp repricing once trading reopens in batches. The staggered restart and the warning that maintenance could be extended if instability occurs signal that operational risk is not fully cleared, a point that matters most for active traders on South Korea's largest won market. Whether the batched rollout proceeds without further interruption, and how deposits and withdrawals come back once the order backlog clears, is the open question.