Blockchain Special Advisor
Norwegian Academy of Engineering
Chairman of the IEEE Computer Society Blockchain Committee
China Computer Association CCF Distinguished Blockchain Expert
Director of Research Center for Computational Innovation, University of Stavanger, Norway. Visiting Professor of Stanford University, Chair Professor of Tsinghua University, Adjunct Professor of Oslo University, etc. Together with Academician Chen Chun (expert to Xi Da on blockchain), he became the 4 blockchain experts hired by China Computer Federation CCF.