Central banks will begin holding bitcoin and Ethereum next year according to Peter Smith CEO of Blockchain. "I think this year will be the first year we start to see central banks start to hold digital currencies as part of their balance sheet," Peter Smith. Here is the link for more; https://www.cnbc.com/2017/12/18/central-banks-will-hold-bitcoin-and-ether-in-2018-blockchain-ceo.html?__source=twitter%7Cmain