Russell erupted for 27 points in the final quarter as the Nets overcame a 25-point deficit to beat the Kings 123-121.
The Mavericks forward learned of the trade ahead of the fourth quarter of the game against the Hornets on Wednesday night.
Owner Mark Cuban invested in cryptocurrency in 2017.
Thomas is making progress towards a return.
A lot of teams will be after the star point guard, and the Cavs hold all the cards.
De'Aaron Fox and Lonzo Ball will face off in Las Vegas.