Blockchain-based Voting System for Secure and Transparent Elections

The Blockchain-Based Online Voting System is designed to provide a secure, transparent, and tamper-resistant platform for conducting digital elections. Traditional voting systems often suffer from issues such as lack of transparency, vote manipulation, and security vulnerabilities. To address these challenges, the proposed system integrates blockchain technology with a web-based application developed using ASP.NET and SQL Server. The system follows a multi-tier architecture where voters and administrators interact through a secure web interface. It incorporates modules such as Admin Management, Voter Authentication, Election Management, Blockchain Processing, and Audit Logging to ensure smooth and controlled operations. Each vote is treated as a transaction, encrypted, and stored within a blockchain structure where every block is linked using SHA-256 hashing, ensuring immutability and integrity of voting data. The implementation includes mechanisms for voter verification, prevention of duplicate voting, real-time vote counting, and secure result generation. Blockchain integrity is maintained through hash validation, Merkle root verification, and chain consistency checks. Additionally, audit logs are maintained for accountability and system monitoring.