|e-government systems use electronic communication devices, computers, and the Internet to provide public services to citizens and other persons in a country or region. These systems facilitate digital interactions between citizens and their government, governments and other government agencies, governments and citizens, governments and employees, and governments and businesses. Today, many countries seek to develop better solutions for public services and efficient communication with citizens by improving the technologies behind e-government, such as Blockchain technology, first proposed by Satoshi Nakamoto in 2008. In the Europe Union (EU), Estonia has made the first use of blockchain technologies in government, applying it in health, education, and many other sectors. South Korea uses the blockchain technologies in e-voting and sweden uses blockchain technologies for their land registry purpose. each of country have different blokchain framework. Based on their different system, the system could be hard to communicate outside of their network even for exchanging the information between government and it will be cost higher for bridging the communication and ICT infrastructure. Blokchain tecnologies needs standardization to prevent the higher cost on ICT and communication problem.