Title: An efficient data sharing scheme using multi-transaction mode consortium blockchain for smart healthcare

Authors: Deepak Kumar Sharma; Adarsh Kumar

Addresses: School of Computer Science, University of Petroleum and Energy Studies, Dehradun-248007, India ' School of Computer Science, University of Petroleum and Energy Studies, Dehradun-248007, India

Abstract: Electronic health records (EHRs) face security and transparency challenges, necessitating new standards. Blockchain technology holds promise for improving EHR security in smart healthcare systems. However, privacy and scalability issues persist, particularly in off-chain transaction management. We propose a method using a multi-transaction mode consortium blockchain (MTMCB) on Redis, enhancing EHR retrieval speed via an Adaptive Balanced Merkle (AB-M) tree. This approach combines binary tree efficiency with Merkle tree robustness. We employ a lattice-based ring signature scheme for secure patient EHR storage and retrieval. Our method significantly improves upload and download times compared to existing techniques, offering a potential solution to EHR access and security challenges.

Keywords: blockchain; smart healthcare; EHR; electronic health records; data retrieval; optimised Redis cache.

DOI: 10.1504/IJSSE.2025.149712

International Journal of System of Systems Engineering, 2025 Vol.15 No.5, pp.423 - 448

Received: 18 Jun 2023
Accepted: 26 Aug 2023
Published online: 11 Nov 2025 *

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