• Deepa Patel
• Mr. Rajneesh Pachouri
• Mr. Anurag Jain
• Mrs. Monali Sahoo

Because Cloud Health Record (CHR) has documented the onset, progression, and management of illnesses, it is extremely valuable from a medical standpoint. Given the sensitive and private nature of patient medical data, cloud health records (CHR) are vital and personal documents for each and every patient. Privacy preservation, security, and data exchange are important CHR concerns. Improved security and user experiences are just two of the numerous advantages that come with technological innovation, and these have been crucial to the popularity of cloud health records in recent years. Nonetheless, there are still a lot of problems with users' complete ownership of data integrity and the security of medical records. Blockchain technology is a novel approach that may be suitable for addressing the difficulties that have been highlighted. Medical records and other healthcare-related data can be housed on a well-architected, secure, tamper-proof platform thanks to technology. To protect privacy, cryptographic procedures are used. The model has tamper resistance, auditability, revocability of consent, and fine-grained and flexible access control. A thorough examination of security would demonstrate that the approach is provably safe in terms of tamper resistance and privacy. The results of the performance analysis indicate that the model outperforms the current approach used in the literature review in terms of overall performance.

- Cloud Health Record, Blockchain technology, Cryptographic, performance analysis, flexible access control.

"PBFT-Driven Blockchain Framework for the Security of Electronic Health Records", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.11, Issue 2, page no.c245-c255, February-2024, Available :http://www.jetir.org/papers/JETIR2402231.pdf

"PBFT-Driven Blockchain Framework for the Security of Electronic Health Records", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.11, Issue 2, page no. ppc245-c255, February-2024, Available at : http://www.jetir.org/papers/JETIR2402231.pdf