French cryptocurrency market maker Flowdesk has completed a $50 million Series B financing round, led by Cathay Innovation, with participation from Cathay Ledger Fund, Eurazeo, ISAI, Speedinvest, Ripple, and Bpifrance (French state-owned investment bank). Flowdesk co-founder and CEO Guilhem Chaumont said in an interview that this is a round of pure equity financing. According to insiders, the new round of financing will increase Flowdesk's valuation from $100 million in Series A financing to over $250 million.