Blockchain supports digital currencies for central banks.  Blockchain is supported by immutability and protections against hacking.  More modern ways to manage global transactions and government currencies across national borders are being implemented worldwide.   Digital currencies are the wave of the future.  Leading vendors include IBM, ConsenSys, Microsoft, and Accenture.  Demand for government blockchain technology is growing everywhere, for example from the largest users of cloud to commercial banks to central banks.  Blockchain is used by companies wishing to manage supply chains.   Bitcoin originally drove blockchain markets.  Government blockchain is a top technology and application driving the market growth.