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Magnúsdóttir, Ásta (author)Swiss watches are known around the world as a luxury product. Due to the fact that the product is considered a status symbol of wealth the market for counterfeit watches is a continuing concern of the industry. Historically the watches have primarily been manufactured in Switzerland. In recent years, however, manufacturing is done all over the...master 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
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Stefanov, Radoslav (author)Blockchain networks have gained recent popularity among organisations that want to make use of the security aspects that blockchain provides. Fabric is one of the most used distributed network technologies, most commonly applied in scenarios that require confidential data to be stored securely and privately. Use case examples are finance,...bachelor thesis 2021
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Yüksel, Akif (author)Kyber is a Decentralized Finance (DeFi) system which runs on the Ethereum blockchain. DeFi aims to remove centralized intermediaries such as Market Makers. An Automated Market Maker (AMM), implemented in a smart contract, is a decentralized version of these. Kyber's Dynamic Market Maker (DMM) is a next-generation AMM which solves two issues:...bachelor thesis 2021
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Bulină, Malina (author)Blockchain technology is the underlying mechanism that many cryptocurrencies operate on. It relies on cryptographic techniques that enforce integrity on transaction records. The records (blocks) stored are limited in size and frequency. One well-known issue regarding blockchain technology is the lack of scalability. In order to mitigate this...bachelor thesis 2021
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Duveen, Sem (author)Large volumes of medical data (MD) are continuously generated by the healthcare domain. When sharing these data, issues arise regarding privacy and security. To solve these issues, a permissioned blockchain (BC) can be used, but since blockchains do not have access control (AC) as a default feature, the integration of an access control system ...bachelor thesis 2021
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GAL, Jean (author)Blockchain is an expanding technologythat offers benefits when applied to supplychain management. This distributed ledgertechnology is combined with supply chainsfor its intrinsic characteristics. For instance,traceability, immutability, and more arediscussed. In this paper, we first presentprivacy-related challenges encountered whenapplying...bachelor thesis 2021
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Kroon, Harmen (author)Decentralized Finance (DeFi) is build on smart-contract supporting blockchains, with Ethereum being the largest ecosystem. A collection of smart-contracts aims to serve as decentralized implementations of financial systems. The philosophy of DeFi dictates automation and desintermediation through exploiting nascent distributed ledger technology...bachelor thesis 2021
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de Klerk, Leon (author)The domain name system (DNS) and public key infrastructure (PKI) provide the core services for the Internet. The use of these systems requires trust in institutions to provide proper services, which they can fail to provide. Centralized management allows these institutions to perform censorship. Additionally, these legacy systems have seen...bachelor thesis 2021
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Filip, Eduard (author)Federated Learning starts to give a new perspective regarding the applicability of machine learning in real-life scenarios. Its main goal is to train the model while keeping the participants' data in their devices, thus guaranteeing the privacy of their data. One of the main architectures is the Horizontal Federated Learning, which is the most...bachelor thesis 2021
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Darbari, Shubhankar (author)The expansion of the Internet and wireless access has led to a widespread increase of Internet of Things applications. These smart devices are becoming a daily aspect of our lives. All the convenient and automated services provided by smart devices come from a centralized service provider. This service provider has access to all the personal...bachelor thesis 2021
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Dikmen, Cemal (author)With the growing scale of the IoT, many industries enjoy the benefit of automation. The IoT consists of an interconnected network of devices that sense their surroundings and share data among other IoT devices. However, this data can be sensitive and private in nature, making security within the ever-growing IoT network a high priority. Because...bachelor thesis 2021
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Tatabitovska, Ana (author)Front-running is the illegal practice of obtaining information unavailable to the general public with regards to upcoming transactions and performing actions based on this knowledge as to gain profit. This type of attack has been an issue since the introduction of the first stock market and it is not a surprise it has spread into blockchain...bachelor thesis 2021
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Beekhuizen, Michael (author)IoT devices have grown rapidly over the past few years. IoT devices are mostly connected to a central server that stores the data and handles end-to-end communication. Due to the increase of IoT devices, the latency with the server increases. Furthermore, when using a central server the data is at risk of being deleted or tampered with. To...bachelor thesis 2021
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Heijbroek, Diederik Heijbroek (author)Patient monitoring and clinical trial management generate continuous large volumes of healthcare data, causing the healthcare industry to be a data-intensive domain. Existing data storage techniques and access mechanics in the healthcare domain exhibit several challenges related to data security, patient privacy, and interoperability. Blockchain...bachelor thesis 2021
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Amiri Ara, Rashid (author), Paardenkooper, Klara (author), van Duin, Ron (author)Purpose: This paper aims to propose a new blockchain system design to improve engineering, procurement and construction (EPC) companies’ supply chain for constructing oil and gas infrastructure, by mitigating cost and time inefficiencies. Design/methodology/approach: A case study analyses the supply chain of a sample EPC company. First, a...journal article 2021
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Ersoy, O. (author), Genç, Ziya Alper (author), Erkin, Z. (author), Conti, M. (author)Smart contracts can be used for the fair exchange of digital goods. A smart contract can escrow the exchange where the receiver deposits the payment, and the sender claims it by providing the goods. In the case of misbehavior, the parties provide proof on whether the received goods match the pre-agreed description or not. In general, the...conference paper 2021
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Li, Meng (author), Zhu, Liehuang (author), Zhang, Zijian (author), Lal, C. (author), Conti, M. (author), Alazab, Mamoun (author)E-commerce platforms incorporate reputation systems that allow customers to rate suppliers following financial transactions. Existing reputation systems cannot defend the centralized server against arbitrarily tampering with the supplier’s reputation. Furthermore, they do not offer reputation access across platforms. Rates are faced with privacy...journal article 2021
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Rodrigo Valero, P. (author), Pouwelse, J.A. (author), de Vos, M.A. (author)Non-Fungible Tokens (NFTs) leverage blockchain technology to certify and transfer ownership of digital assets to individuals. NFTs on the Ethereum blockchain have garnered significant attention recently, with a trading volume of over $2 billion in Q1 2021 only. At the same time, established NFT solutions have low flexibility, limited...conference paper 2021
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Rukanova, B.D. (author), Ubacht, J. (author), van Engelenburg, S.H. (author), Tan, Y. (author), Geurts, Marco (author), Sies, Maarten (author), Molenhuis, Marcel (author), Slegt, Micha (author)Blockchain technology has emerged as new technology and governments are now exploring its potential for realizing value. In recent years, studies have focused on identifying opportunities and barriers of blockchain-based applications for government, and multiple piloting initiatives have been started to experiment and test the potential of this...conference paper 2021