Re-establishment and Regarding Trust and Transparency, Blockchain’s Contribution to the Solution of a Thousand-Year Problem

Trust is the most important key element in the history of humanity and its success. We see and witness an emerging and exciting technology called Blockchain, eliminating losses caused by anti-trust and relieves pain in our social-build environment. Although the atmosphere in business, management, and society today has been heavily altered and involved, trust stays the same. This requirement leads companies in various industries to use new techniques to ensure their customer's business is in safe hands. Unfortunately, most of the current research is heavily based on the Bitcoin currency rather than its underlying technology, which focuses on revealing and improving Blockchain's limitations from managerial value perspectives. Many of the proposed solutions lack a concrete evaluation of their effectiveness. Many other Blockchain scalability related challenges, including throughput and latency, have been left unstudied. In this study, enabling functions is studied, and Blockchain's contribution to organisations' management is discussed. Besides, applicability in today's economic environment in various industries is studied. It is understood that after the development of technologies that eliminate centralised structures such as Blockchain, the business world is keen to adapt to this change. In this context, it is concluded that including new technologies such as Blockchain increased trust in various industries, and in the majority of the studies, Blockhain considered being an element to reduce costs and create a more transparent environment. It can be said that this technology contributes to the development and better understanding of the application area of the industries mentioned in the study

eHealth Integrity Model Based on Permissioned Blockchain

(1) Background: Large eHealth systems should have a mechanism to detect unauthorized changes in patients’ medical documentation, access permissions, and logs. This is due to the fact that modern eHealth systems are connected with many healthcare providers and sites. (2) Methods: Design-science methodology was used to create an integrity-protection service model based on blockchain technology. Based on the problem of transactional transparency, requirements were specified and a model was designed. After that, the model’s security and performance were evaluated. (3) Results: a blockchain-based eHealth integrity model for ensuring information integrity in eHealth systems that uses a permissioned blockchain with off-chain information storage was created. In contrast to existing solutions, the proposed model allows information removal, which in many countries’ eHealth systems is a legal requirement, and is based on a blockchain using the Practical Byzantine Fault Tolerant algorithm. (4) Conclusion: A blockchain can be used to store medical data or only security-related data. In the proposed model, a blockchain is mainly used to implement a data-integrity service. This service can be implemented using other mechanisms, but a blockchain provides a solution that does not require trusted third parties, works in a distributed eHealth environment, and supports document removal