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Stokkink, Q.A. (author)The digital world is evolving toward representing - and serving the interconnection of - natural persons. Instead of depending on the intrastructure of Big Tech companies and governments, users can cooperate and use their hardware to form public infrastructure. Instead of existing by virtue of a reference in some institution's database, users...doctoral thesis 2024
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Kromes, R.G. (author), Li, T. (author), Bouillion, Maxime (author), Güler, Talha Enes (author), van der Hulst, Victor (author), Erkin, Z. (author)Blockchain’s potential to revolutionize supply chain and logistics with transparency and equitable stakeholder engagement is significant. However, challenges like scalability, privacy, and interoperability persist. This study explores the scarcity of real-world blockchain implementations in supply chain and logistics since we have not witnessed...journal article 2024
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Rodrigues de Oliveira, Nicollas (author), de Rezende dos Santos, Yago (author), Rocha Mendes, Ana Carolina (author), Nunes Nasseh Barbosa, Guilherme (author), Tuler de Oliveira, M. (author), Valle, Rafael (author), Scherly Varela Medeiros, Dianne (author), Mattos, Diogo Menezes Ferrazani (author)The COVID-19 pandemic has highlighted the necessity for agile health services that enable reliable and secure information exchange, but achieving proper, private, and secure sharing of EMRs remains a challenge due to diverse data formats and fragmented records across multiple data silos, resulting in hindered coordination between healthcare...review 2024
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Li, Meng (author), Shen, Yanzhe (author), Ye, Guixin (author), He, Jialing (author), Zheng, Xin (author), Zhang, Zijian (author), Zhu, Liehuang (author), Conti, M. (author)Digital forensics is crucial to fight crimes around the world. Decentralized Digital Forensics (DDF) promotes it to another level by channeling the power of blockchain into digital investigations. In this work, we focus on the privacy and security of DDF. Our motivations arise from (1) how to track an anonymous- and-malicious data user who...journal article 2024
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Li, Meng (author), Chen, Yifei (author), Lal, C. (author), Conti, M. (author), Alazab, Mamoun (author), Hu, Donghui (author)Vehicular Digital Forensics (VDF) is essential to enable liability cognizance of accidents and fight against crimes. Ensuring the authority to timely gather, analyze, and trace data promotes vehicular investigations. However, adversaries crave the identity of the data provider/user, damage the evidence, violate evidence jurisdiction, and leak...journal article 2023
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Tian, Yongding (author), Guo, Zhuoran (author), Zhang, Jiaxuan (author), Al-Ars, Z. (author)Many researchers have proposed replacing the aggregation server in federated learning with a blockchain system to improve privacy, robustness, and scalability. In this approach, clients would upload their updated models to the blockchain ledger and use a smart contract to perform model averaging. However, the significant delay and limited...journal article 2023
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Xu, Li (author), Li, T. (author), Erkin, Z. (author)Verifiable Credential (VC) is a new standard proposed by the W3C association to facilitate the expression and verification of third-party-verified credentials on the Internet, such as passports or diplomas. However, the current VC data model lacks an explicit revocation design that guarantees the secure operations of the system, which limits its...conference paper 2023
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Eskue, N.D. (author)This paper provides a detailed review of a digital thread for composite aerospace components. The current state of the digital thread continues to progress and at an ever-accelerating rate due to advancements in supporting technologies such as AI, data capture/processing/storage, sensors, simulation, and blockchain. While the individual steps...review 2023
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Couraud, Benoit (author), Robu, Valentin (author), Flynn, David (author), Andoni, Merlinda (author), Norbu, Sonam (author), Quinard, Honorat (author)Recent years have seen a surge of interest in distributed residential batteries for households with renewable generation. Yet, assuring battery assets are profitable for their owners requires a complex optimisation of the battery asset and additional revenue sources, such as novel ways to access wholesale energy markets. In this paper, we...journal article 2022
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Benchaya Gans, R (author), Ubacht, J. (author), Janssen, M.F.W.H.A. (author)Traditionally, governments and companies store data to identify persons for services provision and interactions. The rise of self-sovereign identities (SSIs) based on blockchain technologies provides individuals with ownership and control over their personal data and allows them to share their data with others using a sort of “digital safe.”...journal article 2022
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Kester, David (author), Li, T. (author), Erkin, Z. (author)There is an increase in interest and necessity for an interoperable and efficient railway network across Europe, creating a key distribution problem between train and trackside entities’ key management centres (KMC). Train and trackside entities establish a secure session using symmetric keys (KMAC) loaded beforehand by their respective KMC...conference paper 2022
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Teng, Y. (author)In the past decade, rapid shifting and evolving technological systems that take trust as part of the design objective (call such systems “trust-inviting systems”) have incredibly transformed the way we interact with others. Think of reputation-based platforms mediating interactions between strangers and other digital services provided by...doctoral thesis 2021
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de Vos, M.A. (author)Marketplaces facilitate the exchange of services, goods, and information between individuals and businesses. They play an essential role in our economy. The standard approach to devise digital marketplaces is by deploying centralized infrastructure, entirely operated and managed by a market operator. In such centralized marketplaces, trusted...doctoral thesis 2021
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Lanzini, F. (author), Ubacht, J. (author), de Greeff, Joachim (author)Blockchain-based applications can enhance the sharing of information in processes involving multiple types of stakeholders, as in Supply Chain Management (SCM). A supply chain network can benefit from the visibility of the flow of goods, money, and information enabled by blockchain technology. So far, only limited evidence is available on the...journal article 2021
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Rikken, O.K. (author), Janssen, M.F.W.H.A. (author), Roosenboom-Kwee, Z. (author), Büttgen, Marion (author), Dicenta, Julia (author), Spohrer, Kai (author), Venkatesh, Viswanath (author), Raman, Rajalakshmi (author), Hoehle, Hartmut (author), De Keyser, Arne (author)As blockchain technology is maturing to be confidently used in practice, its applications are becoming evident and, correspondingly, more blockchain research is being published, also extending to more domains than before. To date, scientific research in the field has predominantly focused on subject areas such as finance, computer science, and...journal article 2021
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Gloerich, Inte (author), de Waal, Martijn (author), Ferri, Gabriele (author), Cila, N. (author), Karpinski, Tara (author)Distributed ledger technologies (DLTs) such as blockchain have in recent years been presented as a new general-purpose technology that could underlie many aspects of social and economic life, including civics and urban governance. In an urban context, over the past few years, a number of actors have started to explore the application of...review 2020
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Benchaya Gans, R (author), Ubacht, J. (author), Janssen, M.F.W.H.A. (author)Whereas part of the world can benefit from the wonders of digital technologies, undocumented migrants, asylum seekers,and refugees are facing the rough reality of being “invisible” in society and ignored by governments. During the COVID-19 pandemic, the economic impact of the closure of the service industry and the impossibility to keep most of...journal article 2020
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Ishmaev, G. (author)The moral significance of blockchain technologies is a highly debated and polarised topic, ranging from accusations that cryptocurrencies are tools serving only nefarious purposes such as cybercrime and money laundering, to the assessment of blockchain technology as an enabler for revolutionary positive social transformations of all kinds. Such...doctoral thesis 2019
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Allessie, David (author), Janssen, M. (author), Ubacht, J. (author), Cunningham, S. (author), van der Harst, G. (author)Blockchain technology has the potential to provide public services directly to the public. This challenges the need for public organizations, who traditionally provided these services. Much of the current work is focused on the technology, whereas the influence on public administration structure has gained less attention. The goal of this paper...journal article 2019
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Hartel, P.H. (author), Homoliak, I. (author), Reijsbergen, Daniël (author)Since it takes time and effort to put a new product or service on the market, one would like to predict whether it will be a success. In general this is not possible, but it is possible to follow best practices in order to maximize the chance of success. A smart contract is intended to encode business logic and is therefore at the heart of...journal article 2019
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