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it - Information Technology 60(5-6) - Oktober 2018

https://dl.gi.de/handle/20.500.12116/36620
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Auflistung it - Information Technology 60(5-6) - Oktober 2018 nach Autor:in "Gipp, Bela"

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  • Zeitschriftenartikel
    On-chain vs. off-chain storage for supply- and blockchain integration
    (it - Information Technology: Vol. 60, No. 5-6, 2018) Hepp, Thomas; Sharinghousen, Matthew; Ehret, Philip; Schoenhals, Alexander; Gipp, Bela
    Supply chains are the basis of most everyday life products. Both data integrity and authenticity of related information have severe implications for quality and safety of end-products. Hence, tamper-proof storage is necessary that prevents unauthorized modifications. We examine peer-reviewed blockchain technologies according to four criteria relevant to supply chains: On-chain storage, off-chain storage, verification cost and secure data sharing. Our evaluation yields an overview of concepts for modeling supply chain processes and points out that on-chain storage is currently not practical.
  • Zeitschriftenartikel
    OriginStamp: A blockchain-backed system for decentralized trusted timestamping
    (it - Information Technology: Vol. 60, No. 5-6, 2018) Hepp, Thomas; Schoenhals, Alexander; Gondek, Christopher; Gipp, Bela
    Currently, timestamps are certified by central timestamping authorities, which have disadvantages of centralization. The concept of the decentralized trusted timestamping (DTT) was developed by Gipp et al. to address these drawbacks. The paper provides insights into the architecture and implementation of a decentralized timestamp service taking the integration of multiple blockchain types into account. Furthermore, the components are introduced and the versatile application scenarios are presented. A future direction of research is the evaluation of blockchain technology and their suitability for timestamping.