The Winklevoss twins, who famously alleged that Facebook founder Mark Zuckerberg stole their website idea, have revealed plans for an IPO that will give investors exposure to the value of digital currency Bitcoins.

Winklevoss Bitcoin Trust, which is designed to operate like an exchange-traded fund, will initially sell US$ 20 million worth of shares, with each share worth a fraction of a Bitcoin, a filing with the Securities and Exchange Commission showed on Monday.