Service Centric Networking
Service Centric Networking

Prof. Dr. Axel Küpper






Office TEL19
Building TEL
Address Ernst - Reuter - Platz 7
10587 Berlin


Kindly be aware that no office hours will be provided on February 23, 2022!

Please be informed that our office hours will be provided every Wednesday from 12:00 - 13:00. Please register at the secretariat.



S. Rodriguez Garzon, H. Yildiz and A. Küpper, Decentralized Identifiers and Self-sovereign Identity in 6G, 2022.


M. Mueller, S. Rodriguez-Garzon, A. Kuepper and N. Ostern, "Engineering Trust-aware Decentralized Applications with Distributed Ledgers", Springer, 2021, pp. 1-35.

Decentralized Applications (dApps) are software applications where different parties interact over the Internet to achieve a common business goal. In contrast to centralized applications, not a singular entity has control over the whole system. The different parties interact in a peer-to-peer fashion. Without a centralized intermediary with the power to resolve conflicts or counteract malicious behavior by its users, dApps often lack trust-building mechanisms for their users. Blockchain and distributed ledger technologies promise to solve trust issues in dApps. This chapter explores in a three-step-approach systematically how to build trust-aware dApps by design with distributed ledger technologies. Therefore, business process models with a trust layer are used as a tool to visualize and analyze trust issues of the dApps underlying process systematically as a first step. Secondly, different distributed ledger trust patterns are selected and used to mitigate these trust issues. Finally, the trust-enhanced dApp can be implemented. This chapter helps system engineers systematically to create trust-aware dApps with distributed ledgers.
M. Müller, N. Ostern, S. Rodriguez Garzon and A. Küpper, "Trust models for Next-generation Blockchain Ecosystems", EAI/Springer, 2021, pp. 1-29.
M. Mueller, N. Ostern, D. Koljada, K. Grunert, M. Rosemann and A. Kuepper, "Trust Mining: Analyzing Trust in Collaborative Business Processes" , IEEE Access, vol. 9, pp. 65044 - 65065, 2021.

The ongoing digital transformation and internationalization of business processes cause a shift towards a more collaborative nature of processes. In such collaborations, different organizations execute separate parts of the process autonomously. This fragmentation leads to uncertainty regarding the correct execution of activities, the proper workflow, and data in the process flow. If organizations engage in business together, trust is needed. Therefore, we propose Trust Mining as an analytical approach to better understand uncertainties and the potential trust issues that arise from them. Trust Mining takes a business process model as an input and analyzes uncertainties and relationships. In the end, an evaluation regarding the trust requirements of specific stakeholders is given. Furthermore, we present a prototypical implementation and illustrate how Trust Mining can be used in trust-aware process (re-)design.
F. Victor, P. Ruppel and A. Kuepper, "A Taxonomy for Distributed Ledger Analytics" , vol. 54, pp. 30-38, 2021. IEEE.

Over the past decade, blockchains and distributed ledger technologies have rapidly evolved. With increasing transaction volumes and the proliferation of decentralized applications based on smart contracts, a need for a deeper understanding arises. We structure the field that we term distributed ledger analytics.

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