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Dieses Paper beschreibt die Implementierung eines Live-Systems für die Erstellung von Cold Storage Wallets.
Ziel soll es sein, einen sicheren und einfachen Erstellungsprozess von Paper-Wallets unter hohen Sicherheitsansprüchen zu ermöglichen.
Der Quellcode ist abrufbar unter https://github.com/envake/vinktar-live
In der Anfangszeit der Distributed Ledger Technologies (DLT) waren die hauptsächlichen Betrachtungswinkel die der Disruption des Bank- und Finanzwesens.
Mit dem Aufkommen des Systems Ethereum im Jahr 2015, hat die Auseinandersetzung mit der Anwendung von Blockchain in weiteren Branchen, an Bedeutung gewonnen. Eine davon ist die Logistik und das Supply Chain Management (SCM). Gerade in Deutschland spielt der Logistiksektor eine große Rolle, nach der Beschäftigtenzahl ist er die drittgrößte Branche und erzielt einen Umsatz von rund 258 Milliarden Euro. Im Beitrag werden konkrete Anwendungsfelder identifiziert und gezeigt welche potentiellen Vorteile sich dort, durch den Einsatz von DLT, erzielen lassen. Ein Schwerpunkt liegt dabei auf der Einschätzung der Technologie hinsichtlich ihrer Sicherheitseigenschaften.
Im Beitrag wird den Fragen nachgegangen, ob Datensicherheit mithilfe von DLT verbessert werden kann und auf welchem Wege.
Decentralizing Smart Energy Markets - tamper-proof-documentation of flexibility market processes
(2020)
The evolving granularity and structural decentralization of the energy system leads to a need for new tools for the efficient operation of electricity grids. Local Flexibility Markets (or "Smart Markets") provide platform concepts for market based congestion management. In this context there is a distinct need for a secure, reliable and tamper-resistant market design which requires transparent and independent monitoring of platform operation. Within the following paper different concepts for blockchain-based documentation of relevant processes on the proposed market platform are described. On this basis potential technical realizations are discussed. Finally, the implementation of one setup using Merkle tree operations is presented by using open source libraries.
Procurement processes are deemed to lack supporting digital technologies that raise efficiency and automation.
Blockchain solutions are piloted in procurement in order to offer a decentralized IT infrastructure covering these needs. This paper aims at identifying current blockchain approaches in the field of procurement and presenting affected business processes. In order to get an overview of the current state of the art, a systematic literature mapping is conducted.
Moreover, the out-comes are gathered and categorized in a classification scheme. Based on the analysis, systematic maps are presented to showcase relevant findings. Within the findings, several blockchain use cases in the field of procurement are identified and information about addressed challenges, utilized blockchain frameworks and affected business processes are extracted.
This paper looks at current projects in the field of Blockchain in education, their specific areas of application, possible advantages and weaknesses. Three examples developed by the team of authors are introduced in detail. First: Gallery-Defender a Serious Game, which was adapted to serve as a demonstrator in a stand-alone version to show the possibility to carry out exams directly from within the game and store the grades and meta-data on Blockchain. Second: Art-Quiz, an e-learning tool, which can be integrated into existing LMS systems and map exam results and further data using Blockchain technologies. Both were developed following an iterative design process. And third: The results of a focus group, which simulated the assignment of grades after an oral online exam. The three examples presented here are based on the Blockchain system Ardor/Childchain Ignis, but each demonstrator has a different set of features and approaches.
In addition, the integration of various Blockchain solutions was conceptually designed to make a Multi-Chain model possible.
This paper analyses the status quo of large-scale decision making combined with the possibility of blockchain as an underlying decentralized architecture to govern common pool resources in a collective manner and evaluates them according to their requirements and features (technical and non-technical). Due to an increasing trend in the distribution of knowledge and an increasing amount of information, the combination of these decentralized technologies and approaches, can not only be beneficial for consortial governance using blockchain but can also help communities to govern common goods and resources. Blockchain and its trust-enhancing properties can potenitally be a catalysator for more collaborative behavior among participants and may lead to new insights about collective action and CPRs.