AP Photo/Elizabeth Williams
- The "crypto couple" pleaded guilty to money laundering conspiracies in federal court on Thursday.
- Ilya Lichtenstein also admitted in court to committing the original 2016 Bitfinex hack.
- The couple was accused of conspiring to launder 119,764 stolen bitcoin worth $4.5 billion.
Ilya Lichtenstein and Heather Morgan, known as the "crypto couple," both pleaded guilty on Thursday to a $4.5 billion bitcoin-laundering scheme in which they plotted to sell cryptocurrency stolen during the 2016 hack of Bitfinex.