Sheila Warren is the project head of blockchain policy at the World Economic Forum. The opinions expressed in this commentary are her own. For many people all over the world, paper cash and metal coins are already items of memory.

from https://www.cnn.com/2018/10/12/perspectives/digital-currency-race/index.html
https://cdn.cnn.com/cnnnext/dam/assets/180925120122-blockchain-dominos-thumbnail-exlarge-169.jpg