The Lifecycle of a User Transaction in a Hyperledger Fabric Blockchain Network Part 1: Propose and Endorse

Nijssen, Sjir; Bollen, Peter

doi:10.1007/978-3-030-11683-5_11

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…Indeed, the modularity as well as the flexibility of Hyperledger has a price to pay, which is the difficulty of the implementation. In order to understand better the Hyperledger transaction process, Nijssen and Bollen (2019) made it quite illustrative.…”

Section: Customizable Incentivementioning

confidence: 99%

Decentralized crowdsourcing medical data sharing platform to obtain chronological rare data

Behfar,

Crowcroft

2024

Data & Policy

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Researchers have encountered many issues while studying rare illnesses such as lack of information, limited sample sizes, difficulty in diagnosis, and more. However, perhaps the biggest challenge is to recruit a large enough sample size for clinical studies; at the same time, obtaining chronological data for these patients is even more difficult. This has urged us to implement a decentralized crowdsourcing medical data sharing platform to obtain chronological rare data for certain diseases, providing both patients and other stakeholders an easier and more secure way of trading medical data by utilizing blockchain technology. This facilitates the obtention of the most elusive types of health data by dynamically allocating extra financial incentives depending on data scarcity. We also provide a novel framework for medical data cross-validation where the system checks the volunteer reviewer count. The review score depends on the count, and the more the reviewers, the bigger the final score. We also explain how differential privacy is used to protect the privacy of individual medical data while enabling data monetization.

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Section: Customizable Incentivementioning

confidence: 99%

Decentralized crowdsourcing medical data sharing platform to obtain chronological rare data

Behfar,

Crowcroft

2024

Data & Policy

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“…Indeed, the modularity as well as the flexibility of Hyperledger has a price to pay, which is the difficulty of the implementation. In order to understand better the hyperledger transaction processes, Nijssen and Bollen [19] made it quite illustrative.…”

Section: B Hyperledger Fabricmentioning

confidence: 99%

Blockchain-Based Data Sharing Platform Customization with On/Off-chain Data Balancing

Behfar,

Théodoloz,

Schranz

et al. 2023

2023 Fifth International Conference on Blockchain Computing and Applications (BCCA)

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Blockchain is widely considered as a promising solution, which can build a secure and efficient environment for data sharing. With more and more people working remotely and privacy becoming a major concern, having a secure and efficient way of sharing data has become a necessity. Blockchain being a decentralized ledger emphasizing cryptography obviously helps with data security and privacy, but the technology can suffer from major constraints in the context of data sharing such as on-chain data volume, storage, network performance, off-chain security, and more. In this study, we are looking at customization as a dynamic or adaptive strategy to determine when/how/what data should be stored on-chain versus off-chain to face the trade-off between performance and security; we explore the relevant research questions and the metrics by implementing a proof-ofconcept solution using Hyperledger-fabric and IPFS (Inter Planetary File System). The results show that the on-chain latency increases with rising on-chain data ratio, whereas the off-chain exhibits reduced latency with respect to the on-chain ratio. In conclusion, the balance between on-chain and off-chain data storage in blockchain networks is a nuanced decision that hinges on the nature of the data, resource availability, and the desired trade-off between security and performance. A customized approach, where sensitive data is securely stored on-chain, while other data is managed off-chain for improved throughput, can help achieve the optimal equilibrium, ensuring both data integrity and network efficiency. Keywords-blockchain, data sharing platform, network, customization, on/off-chainSome researchers used public blockchains to implement their data-sharing ideas. Ethereum is in fact the most prominent

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The Lifecycle of a User Transaction in a Hyperledger Fabric Blockchain Network Part 2: Order and Validate

Nijssen

Bollen

2019

On the Move to Meaningful Internet Systems: OTM 2018 Workshops

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The Lifecycle of a User Transaction in a Hyperledger Fabric Blockchain Network Part 1: Propose and Endorse

Cited by 5 publications

References 3 publications

Decentralized crowdsourcing medical data sharing platform to obtain chronological rare data

Decentralized crowdsourcing medical data sharing platform to obtain chronological rare data

Blockchain-Based Data Sharing Platform Customization with On/Off-chain Data Balancing

The Lifecycle of a User Transaction in a Hyperledger Fabric Blockchain Network Part 2: Order and Validate

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