The project’s goal was the collaborative development of educational content in online frameworks, in which engineering teacher students carried out active development tasks. In the initial phase of the project, based on international research and development trends, we undertook to present the strategic goals of the development and review the research background, with particular attention to the worldwide strengthening of the connections between digital transformation and interactive collaborative learning. In the world of online learning, the fundamental dilemma of content development has become that central professional content development is unable to follow the differentiating needs, therefore the approach that argues for distributed data storage instead of centralization has also come to the fore in international developments, thus we also strive to apply blockchain technology in our latest research. The multi-aspect examination of the repository of learning units/micro-contents, by describing the pattern of the duration units, can presumably contribute to the fact that online collaborative activities are present not only in the process of content development but also in the process of use and further development, being more open. This presentation presents specific examples, illustrating the potential development opportunities. The more open application of the system, using blockchain technology, can also improve user motivation by methodologically modernizing the more flexible application options of the already established curriculum repositories.