World's biggest crypto tycoons set to learn how rich they really are

Some of the world’s biggest cryptocurrency tycoons are about to find out how much they’re really worth.

The secretive bosses of Bitmain Technologies Ltd., Canaan Inc. and Ebang International Holdings Inc. -- three of the largest makers of cryptocurrency mining gear -- are all facing the prospect of public-market scrutiny for the first time as they pursue stock listings in Hong Kong. Bitfury, another industry heavyweight, is open to the idea of an initial public offering, though it doesn’t yet have any concrete plans.

If they proceed, the share sales will represent a major test of whether the fortunes amassed by the