Based on 44(d): Data storage via blockchain; Certification of data via blockchain; User authentication services using blockchain technology; Blockchain as a Service; Design of computer game software; Video game software design; Development of computer game software; Development of application software for delivery of multimedia content; Video game software development; Computer programming of video games; Computer programming of video and computer games; Programming of computer game software; Programming of video game software; Design of games; Design and development of computer game software; Design and development of video game software; Software creation; Creating of computer programs; Creation, updating and adapting of computer programs; Creation, maintenance and adaptation of software; Video game development services/ Based on 1(b): User authentication services using blockchain technology; Providing user authentication services using blockchain-based software technology for cryptocurrency transactions; Design and development of computer game software; Video game software design; Designing and developing computer game software and video game software for use with computers, video game program systems and computer networks; Designing and developing computer game software and video game software for use with computers, video game program systems and computer networks; Computer programming of video games; Computer programming of computer games; Creating of computer programs; Creation, updating and adapting of computer programs; Creation, maintenance and adaptation of software; Video game development services