The goal of this work is to obtain a framework that represents the technological core aspects of blockchain, separated into components, their subcategories and related basic technologies. In order to gain a holistic view of blockchain, with the help of the framework, technologies constructs should be made identifiable as blockchain. For this purpose, a literature review will be conducted to investigate previous approaches to the component-wise division of blockchain technologies. Subsequently, a literature analysis will be conducted in which five established blockchain systems will be analysed and their implementations will be assigned to the general components. For evaluation, a further sixth blockchain technology is used to confirm the basic framework. It becomes apparent that the framework allows a classification of blockchain systems into technologies. The framework has potential for expansion by adding further technology features to make the framework even more useful.