Social currency startup Roll has raised a $1.7 million seed round to help content creators monetize relationships with their fans, CoinDesk reports. BitMEX CEO Arthur Hayes led the round. “I am really excited to work with Roll,” Hayes said in a statement. “I believe in their vision that allows influencers and artists to better monetize their contribution to the world economy using digital tokens. It is a worthy vision and a concept that will prove successful.”