Christoph Stach
Clémentine Gritti
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Abstract
The ability to capture and quantify any aspect of daily life via sensors, enabled by the Internet of Things (IoT), data have become one of the most important resources of the 21st century. However, the high value of data also renders data an appealing target for criminals. Two key protection goals when dealing with data are therefore to maintain their permanent availability and to ensure their integrity. Blockchain technology provides a means of data protection that addresses both of these objectives. On that account, blockchains are becoming increasingly popular for the management of critical data. As blockchains are operated in a decentralized manner, they are not only protected against failures, but it is also ensured that neither party has sole control over the managed data. Furthermore, blockchains are immutable and tamper-proof data stores, whereby data integrity is guaranteed. While these properties are preferable from a data security perspective, they also pose a threat to privacy and confidentiality, as data cannot be concealed, rectified, or deleted once they are added to the blockchain.
In this paper, we therefore investigate which features of the blockchain pose an inherent privacy threat when dealing with personal or confidential data. To this end, we consider to what extent blockchains are in compliance with applicable data protection laws, namely the European General Data Protection Regulation (GDPR). Based on our identified key issues, we assess which concepts and technical measures can be leveraged to address these issues in order to create a privacy-by-design blockchain system.
- A. Abuhashim and C. C. Tan. Smart Contract Designs on Blockchain Applications. In Proc. of the 2020 IEEE Symposium on Computers and Communications, ISCC, pages 1--4, 2020.Google Scholar
Cross Ref
- T. Ali Syed, A. Alzahrani, S. Jan, M. S. Siddiqui, A. Nadeem, and T. Alghamdi. A Comparative Analysis of Blockchain Architecture and its Applications: Problems and Recommendations. IEEE Access, 7:176838--176869, 2019.Google ScholarCross Ref
- Z. A. Almusaylim and N. Jhanjhi. Comprehensive Review: Privacy Protection of User in Location-Aware Services of Mobile Cloud Computing. Wireless Personal Communications, 111:541--564, 2020.Google ScholarDigital Library
- A. M. Antoniadi, M. Galvin, M. Heverin, O. Hardiman, and C. Mooney. Prediction of Quality of Life in People with ALS: On the Road towards Explainable Clinical Decision Support. ACM SIGAPP Applied Computing Review, 21(2):5--17, 2021.Google ScholarDigital Library
- A. Baldominos and Y. Saez. Coin.AI: A Proof-of-Useful-Work Scheme for Blockchain-Based Distributed Deep Learning. Entropy, 21(8):723, 2019.Google ScholarCross Ref
- I. Bentov, A. Gabizon, and A. Mizrahi. Cryptocurrencies Without Proof of Work. In Proc. of the 20th International Conference on Financial Cryptography and Data Security (Workshops), BITCOIN, pages 142--157, 2016.Google ScholarCross Ref
- D. Berdik, S. Otoum, N. Schmidt, D. Porter, and Y. Jararweh. A Survey on Blockchain for Information Systems Management and Security. Information Processing & Management, 58(1):102397, 2021.Google ScholarCross Ref
- S. Bragagnolo, H. Rocha, M. Denker, and S. Ducasse. Ethereum Query Language. In Proc. of the 1st International Workshop on Emerging Trends in Software Engineering for Blockchain, WETSEB, pages 1--8, 2018.Google ScholarDigital Library
- C. Cachin. Architecture of the Hyperledger Blockchain Fabric. IBM Research, 2016.Google Scholar
- L. Campanile, M. Iacono, F. Marulli, and M. Mastroianni. Designing a GDPR compliant blockchain-based IoV distributed information tracking system. Information Processing & Management, 58(3):102511, 2021.Google ScholarDigital Library
- M. Castro and B. Liskov. Practical Byzantine Fault Tolerance. In Proc. of the Third Symposium on Operating Systems Design and Implementation, OSDI, pages 173--186, 1999.Google ScholarDigital Library
- D. L. Chaum. Untraceable Electronic Mail, Return Addresses, and Digital Pseudonyms. Communications of the ACM, 24(2):84--90, 1981.Google ScholarDigital Library
- Y. Chen, J. Li, C. Liu, J. Han, Y. Zhang, and P. Yi. Efficient Attribute Based Server-Aided Verification Signature. IEEE Transactions on Services Computing (Early Access), pages 1--9, 2021.Google ScholarCross Ref
- M. S. Chishti, F. Sufyan, and A. Banerjee. Decentralized On-Chain Data Access via Smart Contracts in Ethereum Blockchain. IEEE Transactions on Network and Service Management, 19(1):174--187, 2022.Google ScholarCross Ref
- M.-J. Choi, H.-S. Kim, and Y.-S. Moon. Publishing Sensitive Time-Series Data under Preservation of Privacy and Distance Orders. International Journal of Innovative Computing, Information and Control, 8(5(B)):3619--3638, 2012.Google Scholar
- T. M. De Farias, C. Dessimoz, A. A. Benitez, C. Yang, J. Long, and A.-C. Sima. Federating and querying heterogeneous and distributed Web APIs and triple stores. In Proc. of the 30th Conference on Intelligent Systems for Molecular Biology, ISMB, pages Q-001:1--Q-001:2, 2022.Google Scholar
- D. Di Francesco Maesa and P. Mori. Blockchain 3.0 applications survey. Journal of Parallel and Distributed Computing, 138:99--114, 2020.Google Scholar
- D. Di Francesco Maesa, P. Mori, and L. Ricci. Blockchain Based Access Control. In Proc. of the 17th IFIP International Conference on Distributed Applications and Interoperable Systems, DAIS, pages 206--220, 2017.Google Scholar
- C. Dwork. Differential Privacy. In Proc. of the 33rd International Colloquium on Automata, Languages and Programming, ICALP, pages 1--12, 2006.Google Scholar
- C. Dwork, F. McSherry, K. Nissim, and A. Smith. Calibrating Noise to Sensitivity in Private Data Analysis. In Proc. of the Third Theory of Cryptography Conference, TCC, pages 265--284, 2006.Google ScholarDigital Library
- European Parliament and Council of the European Union. Regulation on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing directive 95/46/EC (Data Protection Directive). Legislative acts L119, Official Journal of the European Union, 2016.Google Scholar
- M. Finck. Blockchain and the General Data Protection Regulation: Can distributed ledgers be squared with European data protection law? European Parliamentary Research Service PE 634.445, 2019.Google Scholar
- Z. Gao, L. Xu, L. Chen, X. Zhao, Y. Lu, and W. Shi. CoC: A Unified Distributed Ledger Based Supply Chain Management System. Journal of Computer-Science and Technology, 33(2):237--248, 2018.Google ScholarCross Ref
- K. Gjøsteen, C. Gritti, and K. N. Moran. Ballot Logistics: Tracking Paper-based Ballots Using Cryptography. In Proc. of the Fifth International Joint Conference on Electronic Voting, E-Vote-ID, pages 259--274, 2020.Google Scholar
- C. Gritti and H. Li. Efficient Publicly Verifiable Proofs of Data Replication and Retrievability Applicable for Cloud Storage. Advances in Science, Technology and Engineering Systems Journal, 7(1):107--124, 2022.Google ScholarCross Ref
- C. Gritti, M. Önen, and R. Molva. CHARIOT: Cloud-Assisted Access Control for the Internet of Things. In Proc. of the 2018 16th Annual Conference on Privacy, Security and Trust, PST, pages 1--6, 2018.Google ScholarCross Ref
- C. Gritti, M. Önen, and R. Molva. Privacy-Preserving Delegable Authentication in the Internet of Things. In Proc. of the 34th ACM/SIGAPP Symposium on Applied Computing, SAC, pages 861--869, 2019.Google ScholarDigital Library
- J. Han, H. Kim, H. Eom, J. Coignard, K. Wu, and Y. Son. Enabling SQL-Query Processing for Ethereum-Based Blockchain Systems. In Proc. of the 9th International Conference on Web Intelligence, Mining and Semantics, WIMS, pages 9:1--9:7, 2019.Google ScholarDigital Library
- A. B. Haque, A. K. M. N. Islam, S. Hyrynsalmi, B. Naqvi, and K. Smolander. GDPR Compliant Blockchains - A Systematic Literature Review. IEEE Access, 9:50593--50606, 2021.Google ScholarCross Ref
- C. V. Helliar, L. Crawford, L. Rocca, C. Teodori, and M. Veneziani. Permissionless and permissioned blockchain diffusion. International Journal of Information Management, 54:102136, 2020.Google ScholarCross Ref
- T. Hepp, M. Sharinghousen, P. Ehret, A. Schoenhals, and B. Gipp. On-chain vs. off-chain storage for supply-and blockchain integration. it - Information Technology, 60(5--6):283--291, 2018.Google Scholar
- T. M. Hewa, Y. Hu, M. Liyanage, S. S. Kanhare, and M. Ylianttila. Survey on Blockchain-Based Smart Contracts: Technical Aspects and Future Research. IEEE Access, 9:87643--87662, 2021.Google ScholarCross Ref
- F. Hofmann, S. Wurster, E. Ron, and M. Böhmecke-Schwafert. The immutability concept of blockchains and benefits of early standardization. In Proc. of the 2017 ITU Kaleidoscope: Challenges for a Data-Driven Society, ITU K, pages 1--8, 2017.Google ScholarCross Ref
- B. Inmon. Data Lake Architecture: Designing the Data Lake and avoiding the garbage dump. Technics Publications, Basking Ridge, New Jersey, USA, 2016.Google Scholar
- W. H. Inmon, D. Strauss, and G. Neushloss. DW 2.0: The Architecture for the Next Generation of Data Warehousing. Morgan Kaufmann Publishers Inc., Burlington, Massachusetts, USA, 2008.Google Scholar
- P. Jauernig, A.-R. Sadeghi, and E. Stapf. Trusted Execution Environments: Properties, Applications, and Challenges. IEEE Security & Privacy, 18(2):56--60, 2020.Google ScholarCross Ref
- M. Y. Khan, M. F. Zuhairi, T. Ali, T. Alghamdi, and J. A. Marmolejo-Saucedo. An extended access control model for permissioned blockchain frameworks. Wireless Networks, 26(7):4943--4954, 2020.Google ScholarDigital Library
- P. Kohli, S. Sharma, and P. Matta. Security Challenges, Applications and Vehicular Authentication Methods in VANET for Smart Traffic Management. In Proc. of the 2021 2nd International Conference on Intelligent Engineering and Management, ICIEM, pages 327--332, 2021.Google ScholarCross Ref
- S. Krishnan, V. E. Balas, E. Golden Julie, Y. H. Robinson, S. Balaji, and R. Kumar, editors. Handbook of Research on Blockchain Technology. Academic Press, London, San Diego, Cambridge, and Oxford, 2020.Google Scholar
- S. S. Kushwaha, S. Joshi, D. Singh, M. Kaur, and H.-N. Lee. Systematic Review of Security Vulnerabilities in Ethereum Blockchain Smart Contract. IEEE Access, 10:6605--6621, 2022.Google Scholar
- R. Lai and D. Lee Kuo Chuen. Blockchain - From Public to Private. In D. Lee Kuo Chuen and R. Deng, editors, Handbook of Blockchain, Digital Finance, and Inclusion, Volume 2, chapter 7, pages 145--177. Academic Press, 2018.Google ScholarCross Ref
- S. Lazarova-Molnar, H. t. Logason, P. G. Andersen, and M. B. Kjærgaard. Mobile Crowdsourcing of Occupant Feedback in Smart Buildings. ACM SIGAPP Applied Computing Review, 17(1):5--14, 2017.Google ScholarDigital Library
- M. Lepot, J.-B. Aubin, and F. H. Clemens. Interpolation in Time Series: An Introductive Overview of Existing Methods, Their Performance Criteria and Uncertainty Assessment. Water, 9(10):796, 2017.Google Scholar
- Y. Li, K. Zheng, Y. Yan, Q. Liu, and X. Zhou. EtherQL: A Query Layer for Blockchain System. In Proc. of the 22nd International Conference on Database Systems for Advanced Applications, DASFAA, pages 556--567, 2017.Google ScholarCross Ref
- X. Liang, S. Shetty, D. Tosh, C. Kamhoua, K. Kwiat, and L. Njilla. ProvChain: A Blockchain-Based Data Provenance Architecture in Cloud Environment with Enhanced Privacy and Availability. In Proc. of the 2017 17th IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing, CCGRID, pages 468--477, 2017.Google ScholarDigital Library
- A. A. Mamun, S. Azam, and C. Gritti. Blockchain-Based Electronic Health Records Management: A Comprehensive Review and Future Research Direction. IEEE Access, 10:5768--5789, 2022.Google ScholarCross Ref
- M. Manteghi. Blockchain and the European Union's General Data Protection Regulation: From Conflict to "Peaceful" Coexistence? SSRN, 2021.Google ScholarCross Ref
- R. C. Merkle. A Digital Signature Based on a Conventional Encryption Function. In Proc. of the Conference on the Theory and Applications of Cryptographic Techniques, CRYPTO, pages 369--378, 1988.Google Scholar
- K. Mindermann, F. Riedel, A. Abdulkhaleq, C. Stach, and S. Wagner. Exploratory Study of the Privacy Extension for System Theoretic Process Analysis (STPA-Priv) to elicit Privacy Risks in eHealth. In Proc. of the 2017 IEEE 25th International Requirements Engineering Conference (Workshops), REW/ESPRE, pages 90--96, 2017.Google ScholarCross Ref
- K. Miyachi and T. K. Mackey. hOCBS: A privacy-preserving blockchain framework for healthcare data leveraging an on-chain and off-chain system design. Information Processing & Management, 58(3):102535, 2021.Google ScholarDigital Library
- F. Molina, G. Betarte, and C. Luna. Design principles for constructing GDPR-compliant blockchain solutions. In Proc. of the 2021 IEEE/ACM 4th International Workshop on Emerging Trends in Software Engineering for Blockchain, WETSEB, pages 1--8, 2021.Google ScholarCross Ref
- A. A. Monrat, O. Schelén, and K. Andersson. A Survey of Blockchain From the Perspectives of Applications, Challenges, and Opportunities. IEEE Access, 7:117134--117151, 2019.Google ScholarCross Ref
- Y.-S. Moon, H.-S. Kim, S.-P. Kim, and E. Bertino. Publishing Time-Series Data under Preservation of Privacy and Distance Orders. In Proc. of the 21th International Conference on Database and Expert Systems Applications, DEXA, pages 17--31, 2010.Google ScholarCross Ref
- K. B. Muthe, K. Sharma, and K. E. N. Sri. A Blockchain Based Decentralized Computing And NFT Infrastructure For Game Networks. In Proc. of the 2020 Second International Conference on Blockchain Computing and Applications, BCCA, pages 73--77, 2020.Google Scholar
- M. Muzammal, Q. Qu, and B. Nasrulin. Renovating blockchain with distributed databases: An open source system. Future Generation Computer Systems, 90:105--117, 2019.Google ScholarCross Ref
- T. Nakaike, Q. Zhang, Y. Ueda, T. Inagaki, and M. Ohara. Hyperledger Fabric Performance Characterization and Optimization Using GoLevelDB Benchmark. In Proc. of the 2020 IEEE International Conference on Blockchain and Cryptocurrency, ICBC, pages 1--9, 2020.Google ScholarCross Ref
- S. Nakamoto. Bitcoin: A Peer-to-Peer Electronic Cash System. Bitcoin Project, 2008.Google Scholar
- M. S. Ozdayi, M. Kantarcioglu, and B. Malin. Leveraging blockchain for immutable logging and querying across multiple sites. BMC Medical Genomics, 13(7):82, 2020.Google ScholarCross Ref
- S. M. Palanisamy, F. Dürr, M. A. Tariq, and K. Rothermel. Preserving Privacy and Quality of Service in Complex Event Processing through Event Reordering. In Proc. of the 12th ACM International Conference on Distributed and Event-Based Systems, DEBS, pages 40--51, 2018.Google ScholarDigital Library
- A. Park, J. Kietzmann, L. Pitt, and A. Dabirian. The Evolution of Nonfungible Tokens: Complexity and Novelty of NFT Use-Cases. IT Professional, 24(1):9--14, 2022.Google ScholarDigital Library
- Y. R. Park, E. Lee, W. Na, S. Park, Y. Lee, and J.-H. Lee. Is Blockchain Technology Suitable for Managing Personal Health Records? Mixed-Methods Study to Test Feasibility. Journal of Medical Internet Research, 21(2):e12533, 2019.Google ScholarCross Ref
- R. Patgiri, S. Nayak, and N. B. Muppalaneni. Is Bloom Filter a Bad Choice for Security and Privacy? In Proc. of the 2021 International Conference on Information Networking, ICOIN, pages 648--653, 2021.Google ScholarCross Ref
- Y. Peng, M. Du, F. Li, R. Cheng, and D. Song. FalconDB: Blockchain-Based Collaborative Database. In Proc. of the 2020 ACM SIGMOD International Conference on Management of Data, SIGMOD, pages 637--652, 2020.Google ScholarDigital Library
- C. Pinto-Gutiérrez, S. Gaitán, D. Jaramillo, and S. Velasquez. The NFT Hype: What Draws Attention to Non-Fungible Tokens? Mathematics, 10(3):335, 2022.Google ScholarCross Ref
- M. Poelman and S. Iqbal. Investigating the Compliance of the GDPR: Processing Personal Data On A Blockchain. In Proc. of the 2021 IEEE 5th International Conference on Cryptography, Security and Privacy, CSP, pages 38--44, 2021.Google ScholarCross Ref
- A. Poibrenski, M. Klusch, I. Vozniak, and C. Müller. Multimodal Multi-Pedestrian Path Prediction for Autonomous Cars. ACM SIGAPP Applied Computing Review, 20(4):5--17, 2021.Google ScholarDigital Library
- D. Przytarski. Using Triples as the Data Model for Blockchain Systems. In Proc. of the 18th International Semantic Web Conference (Workshops), BlockSW, pages 1--2, 2019.Google Scholar
- D. Przytarski, C. Stach, C. Gritti, and B. Mitschang. A Blueprint for a Trustworthy Health Data Platform Encompassing IoT and Blockchain Technologies. In Proc. of the ISCA 29th International Conference on Software Engineering and Data Engineering, SEDE, pages 56--65, 2020.Google Scholar
- D. Przytarski, C. Stach, C. Gritti, and B. Mitschang. Query Processing in Blockchain Systems: Current State and Future Challenges. Future Internet, 14(1):1, 2022.Google ScholarCross Ref
- Q. Qu, I. Nurgaliev, M. Muzammal, C. S. Jensen, and J. Fan. On spatio-temporal blockchain query processing. Future Generation Computer Systems, 98:208--218, 2019.Google ScholarDigital Library
- M. Romero, W. Guédria, H. Panetto, and B. Barafort. Towards a Characterisation of Smart Systems: A Systematic Literature Review. Computers in Industry, 120:103224, 2020.Google ScholarCross Ref
- T. Sakamoto, M. Yokozawa, H. Toritani, M. Shibayama, N. Ishitsuka, and H. Ohno. A crop phenology detection method using time-series MODIS data. Remote Sensing of Environment, 96(3):366--374, 2005.Google ScholarCross Ref
- S. Sayeed and H. Marco-Gisbert. Assessing Blockchain Consensus and Security Mechanisms against the 51% Attack. Applied Sciences, 9(9):1788, 2019.Google ScholarCross Ref
- D. Schwartz, N. Youngs, and A. Britto. The Ripple Protocol Consensus Algorithm. Ripple, 2014.Google Scholar
- N. Scope, A. Rasin, J. Wagner, B. Lenard, and K. Heart. Purging Data from Backups by Encryption. In Proc. of the 32nd International Conference on Database and Expert Systems Applications, DEXA, pages 245--258, 2021.Google ScholarDigital Library
- M. Shuaib, S. Alam, M. Shabbir Alam, and M. Shahnawaz Nasir. Compliance with HIPAA and GDPR in blockchain-based electronic health record. Materials Today: Proceedings, pages 1--6, 2021.Google ScholarCross Ref
- W. L. Sim, H. N. Chua, and M. Tahir. Blockchain for Identity Management: The Implications to Personal Data Protection. In Proc. of the 2019 IEEE Conference on Application, Information and Network Security, AINS, pages 30--35, 2019.Google ScholarCross Ref
- C. Stach. VAULT: A Privacy Approach towards High-Utility Time Series Data. In Proc. of the Thirteenth International Conference on Emerging Security Information, Systems and Technologies, SECURWARE, pages 41--46, 2019.Google Scholar
- C. Stach, J. Bräcker, R. Eichler, C. Giebler, and C. Gritti. How to Provide High-Utility Time Series Data in a Privacy-Aware Manner: A VAULT to Manage Time Series Data. International Journal on Advances in Security, 13(3 & 4):88--108, 2020.Google Scholar
- C. Stach and A. Brodt. vHike --- A Dynamic Ride-sharing Service for Smartphones. In Proc. of the 2011 IEEE 12th International Conference on Mobile Data Management, MDM, pages 333--336, 2011.Google ScholarDigital Library
- C. Stach, F. Dürr, K. Mindermann, S. M. Palanisamy, and S. Wagner. How a Pattern-based Privacy System Contributes to Improve Context Recognition. In Proc. of the 2020 IEEE International Conference on Pervasive Computing and Communications (Workshops), CoMoRea, pages 238--243, 2018.Google ScholarCross Ref
- C. Stach, C. Gritti, and B. Mitschang. Bringing Privacy Control Back to Citizens: DISPEL --- A Distributed Privacy Management Platform for the Internet of Things. In Proc. of the 35th ACM/SIGAPP Symposium on Applied Computing, SAC, pages 1272--1279, 2020.Google ScholarDigital Library
- C. Stach, C. Gritti, D. Przytarski, and B. Mitschang. Trustworthy, Secure, and Privacy-aware Food Monitoring Enabled by Blockchains and the IoT. In Proc. of the 2020 IEEE International Conference on Pervasive Computing and Communications Workshops, PerCom, pages 50:1--50:4, 2020.Google ScholarCross Ref
- C. Stach and B. Mitschang. CURATOR---A Secure Shared Object Store: Design, Implementation, and Evaluation of a Manageable, Secure, and Performant Data Exchange Mechanism for Smart Devices. In Proc. of the 33rd Annual ACM Symposium on Applied Computing, SAC, pages 533--540, 2018.Google ScholarDigital Library
- C. Stach and F. Steimle. Recommender-based Privacy Requirements Elicitation - EPICUREAN: An Approach to Simplify Privacy Settings in IoT Applications with Respect to the GDPR. In Proc. of the 34th ACM/SIGAPP Symposium on Applied Computing, SAC, pages 1500--1507, 2019.Google ScholarDigital Library
- C. Stach, F. Steimle, C. Gritti, and B. Mitschang. PSSST! The Privacy System for Smart Service Platforms: An Enabler for Confidable Smart Environments. In Proc. of the 4th International Conference on Internet of Things, Big Data and Security, IoTBDS, pages 57--68, 2019.Google ScholarCross Ref
- A. Sunyaev. Distributed Ledger Technology. In Internet Computing: Principles of Distributed Systems and Emerging Internet-Based Technologies, pages 265--299. Springer, 2020.Google ScholarCross Ref
- N. Szabo. Formalizing and Securing Relationships on Public Networks. First Monday, 2(9), 1997.Google Scholar
- Y. Takabatake and Y. Okabe. An Anonymous Distributed Electronic Voting System Using Zerocoin. In Proc. of the 2021 International Conference on Information Networking, ICOIN, pages 163--168, 2021.Google ScholarCross Ref
- N. Tariq, A. Qamar, M. Asim, and F. A. Khan. Blockchain and Smart Healthcare Security: A Survey. Procedia Computer Science, 175:615--620, 2020.Google Scholar
- P. Tasatanattakool and C. Techapanupreeda. Blockchain: Challenges and applications. In Proc. of the 2018 International Conference on Information Networking, ICOIN, pages 473--475, 2018.Google ScholarCross Ref
- U. Tatar, Y. Gokce, and B. Nussbaum. Law versus technology: Blockchain, GDPR, and tough tradeoffs. Computer Law & Security Review, 38:105454, 2020.Google ScholarCross Ref
- N. Thamer and R. Alubady. A Survey of Ransomware Attacks for Healthcare Systems: Risks, Challenges, Solutions and Opportunity of Research. In Proc. of the 2021 1st Babylon International Conference on Information Technology and Science, BICITS, pages 210--216, 2021.Google ScholarCross Ref
- D. Trihinas. Datachain: A Query Framework for Blockchains. In Proc. of the 11th International Conference on Management of Digital EcoSystems, MEDES, pages 134--141, 2019.Google ScholarDigital Library
- L. Tseng, X. Yao, S. Otoum, M. Aloqaily, and Y. Jararweh. Blockchain-based database in an iot environment: challenges, opportunities, and analysis. Cluster Computing, 23(3):2151--2165, 2020.Google ScholarDigital Library
- S. Underwood. Blockchain beyond Bitcoin. Communications of the ACM, 59(11):15--17, 2016.Google ScholarDigital Library
- K. S. S. Wai, E. C. Htoon, and N. N. M. Thein. Storage Structure of Student Record based on Hyperledger Fabric Blockchain. In Proc. of the 2019 International Conference on Advanced Information Technologies, ICAIT, pages 108--113, 2019.Google ScholarCross Ref
- T. Waizenegger, F. Wagner, and C. Mega. SDOS: Using Trusted Platform Modules for Secure Cryptographic Deletion in the Swift Object Store. In Proc. of the 20th International Conference on Extending Database Technology, EDBT, pages 550--553, 2017.Google Scholar
- K. Wang, Y. Yan, S. Guo, X. Wei, and S. Shao. On-Chain and Off-Chain Collaborative Management System Based on Consortium Blockchain. In Proc. of the 7th International Conference on Artificial Intelligence and Security, ICAIS, pages 172--187, 2021.Google ScholarCross Ref
- G. Wood. Ethereum: A Secure Decentralised Generalised Transaction Ledger. Ethereum Yellow Paper Berlin Version 888949c, 2021.Google Scholar
- H. P. Wouda and R. Opdenakker. Blockchain technology in commercial real estate transactions. Journal of Property Investment & Finance, 37(6):570--579, 2019.Google ScholarCross Ref
- C. Xu, C. Zhang, and J. Xu. vChain: Enabling Verifiable Boolean Range Queries over Blockchain Databases. In Proc. of the 2019 International Conference on Management of Data, SIGMOD, pages 141--158, 2019.Google ScholarDigital Library
- S. Zhang and J.-H. Lee. Analysis of the main consensus protocols of blockchain. ICT Express, 6(2):93--97, 2020.Google ScholarCross Ref
- M. T. Zia, M. A. Khan, and H. El-Sayed. Application of Differential Privacy Approach in Healthcare Data - A Case Study. In Proc. of the 2020 14th International Conference on Innovations in Information Technology, IIT, pages 35--39, 2020.Google ScholarCross Ref
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- Assessment and treatment of privacy issues in blockchain systems
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