Bitcoin.com is one of the world’s largest bitcoin sites, having grown its profile this year thanks to the remarkable price surge of the cryptocurrency. But its cofounder and CTO, Emil Oldenburg, a Swedish native, is extremely sceptical when it comes to bitcoin’s future.

”I would say an investment in bitcoin is right now the riskiest investment you can make. There’s an extremely high risk,” he says in an interview with Swedish tech site Breakit.

Although Oldenburg is far from the first to criticise the cryptocurrency’s viability as an investment asset, his position as an industry insider does stand out – even as he migrates to its spin-off, bitcoin cash (BCH).

“I have in fact sold all my bitcoins recently and switched to bitcoin cash,” he says, referring to the currency that split from bitcoin in August and recently overtook Ethereum as the world’s second-largest cryptocurrency. Bitcoin Cash has also gained the strong support of Oldenburg’s co-founder, Roger Ver.