The Facebook-led Diem cryptocurrency project is preparing to sell its assets for $200m, as the social media giant admits defeat in its once-sprawling digital payments ambitions. The Diem Association, which was launched by Facebook in 2019 quickly came under political fire leading to early members Visa, Mastercard, eBay, Stripe and Mercado Pago quitting shortly after signing up. The buyer according to one source is California-based Silvergate Bank.