S. African Brothers Vanish, and So Does $3.6 Billion in Bitcoin

A pair of South African brothers have vanished, along with Bitcoin worth $3.6 billion from their cryptocurrency investment platform.

A Cape Town law firm hired by investors says they can’t locate the brothers and has reported the matter to the Hawks, an elite unit of the national police force. It’s also told crypto exchanges across the globe should any attempt be made to convert the digital coins.

Following a surge in Bitcoin’s value in the past year, the disappearance of about 69,000 coins -- worth more than $4 billion at their April peak -- would represent the biggest-ever dollar loss ...