International Journal of Science, Engineering and TechnologyAuthors: Surya R, Dr.R.Nagarajan
Abstract: The Healthcare Sector Faces Major Challenges In Maintaining Secure, Private, And Real-Time Access To Patient Medical Records. Traditional Centralized Systems Are Vulnerable To Data Breaches, Unauthorized Access, And Single Points Of Failure, Which Can Critically Impact Patient Safety. To Overcome These Issues, This Paper Proposes Healthchain, A Blockchain- Enabled Healthcare Data Transmission And Real-Time Patient Monitoring System. Healthchain Employs A Python-Based Blockchain With SHA-256 Proof-Of-Work, RSA-2048 Cryptography, And AES-256 Encryption To Securely Store And Protect Patient Records On An Immutable Distributed Ledger. The System Continuously Monitors Patient Vitals Such As Heart Rate (BPM) And Blood Oxygen (Spo₂) And Updates Them In Real Time Using Websocket Communication. Critical Health Data Is Automatically Recorded On The Blockchain, While Smart Contracts Manage Emergency Access And Patient Consent. The System Is Built Using Flask, Flask-Socketio, Mongodb, And Pydantic, With A Responsive Frontend Developed Using Jinja2 Templates And Chart.Js For Real-Time Visualization. It Also Supports Role-Based Access Control For Admins, Doctors, And Patients, Along With Automated PDF Health Reports. Healthchain Demonstrates How Blockchain, Real-Time Data Monitoring, And Secure Cryptographic Techniques Can Be Integrated To Create A Tamper-Proof, Transparent, And Patient-Centric Healthcare Data Management System.
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