Официальный ответ:
OKCoin Abnormal Trade Report And Rollback Announcement
5 minutes ago Updated
Dear OKCoin Users:
On Nov 15, 2017 at 18:45-18:50, matching engine of OKCoin.com suffered from network instability and malfunction of cloud service provider. We discovered a handful of trade abnormalities triggered by mentioned glitches. All client money remains sound and safe. In light of the fairness to all market participants, OKCoin.com decides to execute trade rollback to Nov 15, 2017 at 18:20:00 (Beijing Time). All bugs related to this event had been fixed.
We sincerely apologise to all OKCoin Users. In response to the inconvenience caused, We would free all trading fees in OKCoin.com from Nov 17 to Nov 24.
Should you have any queries, please do not hesitate to contact our 7/24 CS Hotline.
OKCoin
Nov 16,2017