In an era driven by information exchange, transparency and security hold crucial importance, particularly within the healthcare industry, where data integrity and confidentiality are paramount. This paper investigates the integration of blockchain technology in healthcare, focusing on its potential to revolutionize Electronic Health Records (EHR) management and data sharing. By leveraging Ethereum-based blockchain implementations and smart contracts, we propose a novel system that empowers patients to securely store and manage their medical data. Our research addresses critical challenges in implementing blockchain in healthcare, including scalability, user privacy, and regulatory compliance. We propose a solution that combines digital signatures, Role-Based Access Control, and a multi-layered architecture to enhance security and ensure controlled access. The system's key functions, including user registration, data append, and data retrieval, are facilitated through smart contracts, providing a secure and efficient mechanism for managing health information. To validate our approach, we developed a decentralized application (dApp) that demonstrates the practical implementation of our blockchain-based healthcare solution. The dApp incorporates user-friendly interfaces for patients, doctors, and administrators, showcasing the system's potential to streamline healthcare processes while maintaining data security and integrity. Additionally, we conducted a survey to gain insights into the perceived benefits and challenges of blockchain adoption in healthcare. The results indicate strong interest among healthcare professionals and IT experts, while also highlighting concerns about integration costs and technological complexity. Our findings...

翻译：在信息交换驱动的时代，透明度和安全性至关重要，尤其是在数据完整性和保密性至上的医疗保健行业。本文研究了区块链技术在医疗保健领域的整合，重点关注其在革新电子健康记录（EHR）管理和数据共享方面的潜力。通过利用基于以太坊的区块链实现和智能合约，我们提出了一种新颖的系统，使患者能够安全地存储和管理其医疗数据。我们的研究解决了在医疗保健中实施区块链的关键挑战，包括可扩展性、用户隐私和法规遵从性。我们提出了一种结合数字签名、基于角色的访问控制和多层架构的解决方案，以增强安全性并确保受控访问。系统的关键功能，包括用户注册、数据追加和数据检索，均通过智能合约实现，为管理健康信息提供了一个安全高效的机制。为了验证我们的方法，我们开发了一个去中心化应用程序（dApp），展示了我们基于区块链的医疗保健解决方案的实际实施。该dApp为患者、医生和管理员提供了用户友好的界面，展示了该系统在保持数据安全性和完整性的同时简化医疗流程的潜力。此外，我们进行了一项调查，以深入了解区块链在医疗保健领域应用的感知效益和挑战。结果表明，医疗保健专业人员和IT专家对此表现出浓厚兴趣，同时也凸显了对整合成本和技术复杂性的担忧。我们的研究结果...