In today’s digital landscape, robust security protocols are essential. Despite significant advancements in information security, cyber threats continue to evolve and increase. Although advanced protection systems such as multi-factor authentication and encryption have been implemented, data remains vulnerable to breaches. In this context, blockchain technology emerges as one of the most promising technologies that can contribute to enhancing data security, thanks to its distinctive features such as decentralization and transparency. This paper explores the integration of blockchain technology and Elliptic Curve Cryptography (ECC) to address privacy, security, and scalability challenges in healthcare data exchange. By leveraging blockchain’s decentralized, immutable structure along with ECC for secure key management, the proposed system offers a secure platform for storing and verifying Electronic Health Records (EHRs). Smart contracts are utilized to ensure transparent, tamper-proof authentication processes, which enhance user trust. This blockchain-based approach, strengthened by ECC, not only fortifies security and privacy but also eliminates single points of failure and reduces reliance on third-party verification. While eliminating third-party verification enhances security and reduces costs, it raises the need for robust governance mechanisms. A decentralized governance model, potentially through the use of smart contracts or Decentralized Autonomous Organizations (DAOs), can ensure continuous oversight and compliance with healthcare regulations. The proposed system leverages a decentralized governance model using smart contracts or DAOs to enhance compliance and oversight. Designed for scalability and efficiency, the system facilitates secure EHR exchange across multi-cloud environments. The findings suggest that blockchain, integrated with ECC, provides a promising solution for secure, scalable EHR management in healthcare.