In this paper the peculiarities of the contour formation of the suspicious operations proceeding in commercials bank using AML/CFT (Anti-Money Laundering/Counter-Financing of Terrorism) issues accepted in present time in practical sphere of commercial organizations are presented. The structure of the AML/CFT section in commercial bank is presented which is structuring on the basis of the business-applications infrastructure using special automated bank software. The attention is paid to perspective blockchain technology which is taking wider application during implementation and exploitation of IT-projects related to electronical banks’ services. Keywords: Blockchain, financial monitoring, business-application, front-office, commercial bank, register of remote data, transaction