Cameron and Tyler Winklevoss. Thomson Reuters
- The Winklevoss twins, known for suing Mark Zuckerberg, started buying bitcoin in 2012.
- Their bitcoin holdings are now worth $1.3 billion, The New York Times reported.
- The twins keep the private key for their bitcoin fortune in multiple pieces in bank vaults around the country.
People laughed at the Winklevoss twins in 2012 when they started buying up bitcoin — lots of it.