Stressing that its customers’ assets remain secure, the company added: “In order to act in the best interests of customers and deliver exceptional long-time customer service, we have decided to suspend digital assets/cryptocurrencies withdrawals … We assure [you] that OKEx’s other functions remain normal and stable.”

The value of OKEx's utility token, OKB, fell off a cliff after the shock announcement (Photo: C Sephton)