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Dzelme, Rihards (author)We are at the beginning of the most significant societal change since the internet. We are transitioning from a 2-dimensional browser-based interaction to immersive 3-dimensional experiences. The metaverse is not a place or a destination but a state where technology and ecosystem are symbiotic. <br/>Digital Twins, interactive toolkits,...master thesis 2022
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Nanhekhan, Kevin (author)Smart contracts play an important role within the blockchain by ensuring that valid transactions are being recorded. However, there are critical concerns regarding the security and privacy of data within these blockchain applications. This research provides information on how the integration of the Trusted Platform Module can achieve more...bachelor thesis 2022
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Deshamudre, Rohan (author)Smart contracts allow for the collaboration and transaction processes between multiple parties/organisations to be automated and conducted in a neutral environment. In many situations these agreements are confidential and running a smart contract that contains private/sensitive information on a public blockchain network which is transparent and...bachelor thesis 2022
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Joosen, Floor (author)Privacy and security are important topics in data aggregation, as companies are aggregating large amounts of sensitive data from their users. The aim of this paper is to improve the security and privacy of data aggregation using smart contracts, homomorphic encryption and post-quantum encryption methods on Hyperledger Fabric. After a literature...bachelor thesis 2022
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Vega Sanchez, Julio (author)The increasing demand for sharing Internet of Things (IoT) increases demand for a secure way of sharing data. Smart contracts could provide this because of its distributed nature. Proxy re-encryption is an encryption (PRE) method that can be used to share information. In this paper, a secure data sharing scheme is presented that uses multi-hop...bachelor thesis 2022
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Park, Chaiwon (author)A rise in the use of blockchain systems implies an increase in smart contract usage. Blockchain systems can easily be found these days, most notably in cryptocurrencies and financial management. Furthermore, the Internet of Things (IoT) is being developed with blockchain, since blockchain ensures trust in IoT data and adds great flexibility....bachelor thesis 2022
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Kahawati, Ali (author)Blockchain networks have acquired ongoing notoriety among associations that need to utilise the security perspectives that blockchain gives. Hyperledger Fabric (HF) is one of the most widely utilised distributed network technologies, most ordinarily applied in situations that require private information to be maintained safely and secretly. Use...bachelor thesis 2022
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Bulină, Malina (author)Data outsourcing has become one of the primary means for preserving information as it passes the responsibility of storage management to the service provider. However, storing sensitive data remotely poses privacy threats for the data owners. Searchable encryption (SE) is a technique that allows performing search queries over encrypted data. The...bachelor thesis 2022
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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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Smart contracts in energy systems: A systematic review of fundamental approaches and implementationsKirli, Desen (author), Couraud, Benoit (author), Robu, Valentin (author), Salgado-Bravo, Marcelo (author), Norbu, Sonam (author), Andoni, Merlinda (author), Antonopoulos, Ioannis (author), Negrete-Pincetic, Matias (author), Flynn, David (author), Kiprakis, Aristides (author)Given the ongoing transition towards a more decentralised and adaptive energy system, the potential of blockchain-enabled smart contracts for the energy sector is being increasingly recognised. Due to their self-executing, customisable and tamper-proof nature, they are seen as a key technology for enabling the transition to a more efficient,...review 2022
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Madhwal, Yash (author), Borbon-Galvez, Yari (author), Etemadi, N. (author), Yanovich, Yury (author), Creazza, Alessandro (author)The growth of the enterprise blockchain research supporting supply chain management calls for investigations of their impact and mindfulness of their design, use cases, and pilots. With a blockchain design for the Proof of Delivery (PoD) process management, this paper contributes to learning about performance measurement and the transaction...journal article 2022
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Olsthoorn, Mitchell (author), van Deursen, A. (author), Panichella, A. (author)Transaction-reverting statements are key constructs within Solidity that are extensively used for authority and validity checks. Current state-of-the-art search-based testing and fuzzing approaches do not explicitly handle these statements and therefore can not effectively detect security vulnerabilities. In this paper, we argue that it is...conference paper 2022
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Marijan, Dusica (author), Lal, C. (author)As blockchain technology is gaining popularity in industry and society, solutions for Verification and Validation (V&V) of blockchain-based software applications (BC-Apps) have started gaining equal attention. To ensure that BC-Apps are properly developed before deployment, it is paramount to apply systematic V&V to verify their...review 2022
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Mhaisen, N. (author), Allahham, Mhd Saria (author), Mohamed, Amr (author), Erbad, Aiman (author), Guizani, Mohsen (author)Service provisioning systems assign users to service providers according to allocation criteria that strike an optimal trade-off between users' Quality of Experience (QoE) and the operation cost endured by providers. These systems have been leveraging Smart Contracts (SCs) to add trust and transparency to their criteria. However, deploying...journal article 2022
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Akkaoui, R. (author), Stefanov, Alexandru (author), Palensky, P. (author), Epema, D.H.J. (author)The concept of the internet of energy (IoE) emerged as an innovative paradigm to encompass all the complex and intertwined notions relevant to the transition of current smart grids towards more decarbonization, digitalization and decentralization. With a focus on the two last aspects, the amount of intelligent devices being connected in a...journal article 2022
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Rikken, O.K. (author), Janssen, M.F.W.H.A. (author), Roosenboom-Kwee, Z. (author)Blockchain-based Decentralized Autonomous Organizations (DAOs) are systems for transacting and storing value by automatically executing a function without the need for trusted, centralized authorities. Participative budgeting requires voting about budget allocation by communities and is often confronted with issues in trust and transparency. Yet...conference paper 2022
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Arbabi, Mohammad Salar (author), Lal, C. (author), Veeraragavan, Narasimha Raghavan (author), Marijan, Dusica (author), Nygard, Jan F. (author), Vitenberg, Roman (author)Continuously generated volumes of health data make healthcare a data-intensive domain. This data needs to be collected, stored, and shared among different healthcare actors for various purposes, such as reporting, analysis, collaborative research, and personalized healthcare services. However, the existing data storage and exchange solutions...journal article 2022
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Yu, Xinghuo (author), Tang, Changbing (author), Palensky, P. (author), Colombo, Armando (author)Imagine you want to send money to a friend overseas. Wouldn't it be good if you didn't have to pay hefty fees to the intermediaries, and your friend received the funds very quickly? Now imagine ordering parts to make a product in your manufacturing plant. Wouldn't it be great if you were able to verify where each part comes from and have...journal article 2022
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Paulsen, Cathrine (author)Hyperledger Fabric is a permissioned enterprise blockchain allowing organizations to collaborate and automate processes via smart contracts. However, these contracts could contain security vulnerabilities leading to unexpected behavior or other negative consequences. Therefore, this study takes a closer look at three reported smart contract...bachelor thesis 2021
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Slager, Cheyenne (author)GoQuorum is an enterprise blockchain platform that supports smart contracts and allows for private transactions. Smart contracts enable automated payment while eliminating the need for third-party involvement. Previous attacks on smart contracts have already shown that existing vulnerabilities can lead to great financial losses. Yet, a study...bachelor thesis 2021