The Diners Club — then AmEx — spurred widespread acceptance of the credit card. Could a similar model trigger mass adoption of cryptocurrency?
source https://www.google.com/url?rct=j&sa=t&url=https://hackernoon.com/black-card-on-the-blockchain-9df4df7781e7&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNHpPkR7W0Pe7ABF3cOVY6wgDhzOKg
