QuadrigaCX, the largest bitcoin exchange in Canada, has claimed to have lost CAD 190 million (nearly USD 145 million) worth of cryptocurrency after the exchange lost access to its cold (offline) storage wallets. Founder and CEO of the company’s offline wallet, founder and CEO John Cotten, died of Crohn’s disease on December 9 in Jaipur, India. Cotten was the only person who had the private keys to the wallet, according to an affidavit filed by Cotten’s widow Jennifer Robertson.
Source: https://thehackernews.com/2019/02/cryptocurrency-exchange-exit-scam.html