A cryptocurrency exchange in Japan is coming under government scrutiny after it said hackers stole $530 million from its users.
The exchange, Coincheck, has promised to partially refund the 260,000 cryptocurrency investors affected by the theft, although it didn’t say when it would do so or where it’s getting the money from.
The hacking at Coincheck, which bills itself on its website as “the leading bitcoin and cryptocurrency exchange in Asia,” came to light over the weekend. If confirmed, it’s expected to rank as the biggest such theft on record, eclipsing the estimated $400 million in bitcoin stolen from Mt Gox in 2014.
Coincheck said the hackers stole customer deposits of NEM, a less well known digital currency.
The exchange promised to use cash from its own funds to pay out ¥46.3 billion ($426 million) toward covering its users’ losses. That’s about 20% less than the total value of the virtual tokens that were stolen.
Coincheck said in a blog post that the hack “has caused immense distress to our customers, other exchanges, and people throughout the cryptocurrency industry.”
“We would like to offer our deepest and humblest apologies to all of those involved,” the exchange said. It has currently suspended trading in all virtual currencies apart from bitcoin.
The price of NEM plunged almost 20% after the theft came to light over the weekend, but it has since recovered those losses.
Coincheck didn’t respond to repeated requests for comment on how exactly it will fund the customer refunds.