Cryptocurrency Arthur Hayes’ ‘sub $50K’ Bitcoin call, Mt. Gox CEO’s new exchange, and more: Hodler’s Digest, Sept. 1 – 7 by admin 4 weeks ago Arthur Hayes revealed he “took a cheeky short” on Bitcoin, former Mt. Gox CEO Mark Karpeles will launch a new crypto exchange: Hodler’s Digest FacebookTwitterPinterestLinkedinEmail