The news of Mastercard Releasing a platform that will enable Central Banks to test digital currencies caught my attention. i don't know how they plan to go about that but some blockchain platforms are already ahead, providing means for merchants to accept cryptocurrency as payment.
I know of NOWPayments which is currently the easiest and best getway to accept cryptocurrency as payment. You might want to check them out and write a review. it would interest me to read your view.
I do know about them and I think they are doing a great job even if now we have fully decentralized exchanged such as Uniswap