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<p>The exponential growth of digital healthcare data necessitates secure, efficient, and tamper-resistant storage mechanisms. This paper presents PVHBEHR (Pell series Variable Hash for Blockchain-based Electronic Health Records), a blockchain framework specifically designed for secure and resource-aware management of electronic health records (EHRs). PVHBEHR integrates two key modules named as Resource Readiness Quantifier (RRQ), which dynamically evaluates node-level computational capacity, and the RRQ-biased Hash Calculator (RHC), which generates variable initial hash values based on Pell numbers and adjusts nonce difficulty in real time. This approach ensures optimal load distribution and enhances both the integrity and efficiency of block creation. Experimental validation was conducted independently for text-based and image-based EHR datasets. The proposed system demonstrated strong scalability, achieving transaction per second as much as 108 TPS for 5000 records. These results confirm that PVHBEHR delivers consistent, high-performance blockchain operation while adapting to heterogeneous resource environments in a decentralized healthcare setting.</p>

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A novel design for enhancing security of text and image using pell series variable hash for blockchain-based electronic health records

  • 期刊论文

  • 发表日期：

    2025年12月19日

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  • U. T. Pemmaiah,
  • A. Devi

摘要

The exponential growth of digital healthcare data necessitates secure, efficient, and tamper-resistant storage mechanisms. This paper presents PVHBEHR (Pell series Variable Hash for Blockchain-based Electronic Health Records), a blockchain framework specifically designed for secure and resource-aware management of electronic health records (EHRs). PVHBEHR integrates two key modules named as Resource Readiness Quantifier (RRQ), which dynamically evaluates node-level computational capacity, and the RRQ-biased Hash Calculator (RHC), which generates variable initial hash values based on Pell numbers and adjusts nonce difficulty in real time. This approach ensures optimal load distribution and enhances both the integrity and efficiency of block creation. Experimental validation was conducted independently for text-based and image-based EHR datasets. The proposed system demonstrated strong scalability, achieving transaction per second as much as 108 TPS for 5000 records. These results confirm that PVHBEHR delivers consistent, high-performance blockchain operation while adapting to heterogeneous resource environments in a decentralized healthcare setting.