Such Cryptocurrency. So Amaze. : Planet Money : NPR
Dogecoin was created for learning about crypto-currency, and giving money to charity.
It is now worth $1.4 B. And as other blockchain system, it enables almost instant and fee transfer of money.
On the other side, US banks are still using ancient system from 1970's, written in COBOL and running on mainframe computers, that takes up to 5 days to transfer money, and the service is expensive for users. But it is very profitable for the banks, so it stays that way, for now at least, until some "Amazon of banking" takes off.
It is not technical reasons that hold back, in UK similar money transfers take seconds!
Episode 489: The Invisible Plumbing Of Our Economy : Planet Money : NPR