Dr. Ashok Kumar Das is one of the program committee chairs for the International Congress on Blockchain and Applications (BLOCKCHAIN’19), Avila, Spain from 26 – 28 June. This annual congress brings together blockchain and artificial intelligence (AI) researchers, who share ideas, projects, lectures, and advances associated with those technologies and their application domains. The BLOCKCHAIN’19 congress is devoted to promoting the investigation of cutting-edge blockchain technology, to exploring the latest ideas, innovations, guidelines, theories, models, technologies, applications and tools of blockchain and AI for the industry, and to identifying critical issues and challenges that researchers and practitioners must deal with in future research.