Abstract
The healthcare is rapidly going digital though it is still confronted with a lot of challenges touching on the aspects of data security, integrity, transparency and interoperability. The conventional Electronic Health Record (EHR) systems tend to be highly centralized whereby patient information is left and processed by one owner or organization. The overarching architecture presents a few vulnerabilities such as vulnerability to breach of data, access by unqualified users, and malicious alterations. Moreover, an absence of interoperability among various healthcare providers tends to lead to fragmented medical documentation, and it is hard to safely transfer patient data between institutions. Not only but the restraints lead to the obstruction of effective health care delivery but also diminish patient, health practitioner, and organization trust. In order to address these limitations, this project suggests MedEHR, a blockchain-based Electronic Health Record which will have guaranteed secure, clear, and unreliable management and control of medical data. The suggested system will employ blockchain technology to establish a decentralized and concrete registry, with all medical records stored there forever and unable to be changed once authentic. Using Ethereum with the help of smart contracts, MedEHR automates the most important processes, including the creation, maintenance, and control of records, making all operations transparent, verifiable, and irrespective of any manipulations. The system is enriched with cryptographic measures like the use of SHA-256 to hash data to improve the security and integrity of data in addition to blockchain. Medical details that are sensitive are secured through a hash value, which is obtained by converting them into unique hash values and hence any modification would be easily detected by anyone who may not be an authorized user. This will ensure that patient records are always reliable and dependable. MedEHR provides patients and healthcare providers to interrelate with medical records in a decentralized setting, without having to rely on a centralized authority. This gives patients more control of their data and they can enable or deny access to healthcare providers as they desire. Simultaneously, approved users will be able to access and verify medical records in real-time with proper security, thus making the correct and timely decisions. The proposed solution holds great potential in improving data security, transparency, and accessibility by incorporating blockchain technology into healthcare systems. It minimizes fraud risk, unauthorized manipulation of data, and facilitates easy and safe sharing of data amongst many healthcare providers. Altogether, MedEHR introduces a flexible and stable platform on which contemporary healthcare data processing can be based, which improves the levels of trust, efficiency, and quality of care.
Keywords
Blockchain, Electronic Health Records (EHR) Ethereum, Smart Contracts, Healthcare Security, SHA-256 Hashing, Decentralization, Data Integrity, Data Privacy, Distributed Ledger Technology.
Citations
IRE Journals:
K. Sai Adithya, O. Akshay, Y. Sai Charan Reddy, RamBabu Y "MedEHR – Medical Electronic Health Record Using Blockchain" Iconic Research And Engineering Journals Volume 9 Issue 10 2026 Page 2064-2072 https://doi.org/10.64388/IREV9I10-1716590
IEEE:
K. Sai Adithya, O. Akshay, Y. Sai Charan Reddy, RamBabu Y
"MedEHR – Medical Electronic Health Record Using Blockchain" Iconic Research And Engineering Journals, 9(10) https://doi.org/10.64388/IREV9I10-1716590
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IRE Journals is an open access online journals established with an aim to publish high quality of research work in various diciplines. We have more than 6 years in publications. Over 2500+ papers already published.
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