[Class : 42] Business Card Design; Computer Programming; Computer Software Design; Computer System Analysis; Conversion Of Computer Programs And Data, Other Than Physical Conversion; Cryptocurrency Mining / Cryptomining; Development Of Computer Platforms; Electronic Data Storage; Electronic Monitoring Of Credit Card Activity To Detect Fraud Via The Internet; Hosting Computer Websites; Platform As A Service [Paa S]; Software As A Service [Saa S]; Software Development In The Framework Of Software Publishing; Software Engineering Services For Data Processing; Updating Of Computer Software; User Authentication Services Using Single Sign On Technology For Online Software Applications; User Authentication Services Using Technology For E Commerce Transactions; User Authentication Services Using Blockchain Technology; Writing Of Computer Code;