Published Paper Details:

Electronic voting systems are widely used, but many of them still suffer from problems related to transparency, data integrity, and public trust. These issues are more common in systems where vote storage and verification are fully controlled by centralized authorities, leaving voters with no clear way to verify the process. To address this problem, this work presents a decentralized online voting system built on the Ethereum blockchain, where voting logic is handled through a smart contract rather than a central server. The system uses MetaMask for voter authentication by verifying ownership of a blockchain address, while Web3.js is responsible for sending vote transactions to the blockchain. Node.js with Express is used to manage backend operations, and MySQL is included only for storing structured off-chain data that is not practical to keep on the blockchain. Voter registration is carried out using a one-time password sent to a mobile number, ensuring that each verified user can vote only once. Once a vote is recorded on the blockchain, it cannot be changed or submitted again. The complete system was tested on a Ganache local blockchain to evaluate transaction behavior and system reliability. The results show that votes are processed correctly, duplicate voting is prevented, private keys remain secure, and vote counts are available immediately after the polling period ends. The study shows that using blockchain for online voting can improve trust and transparency while keeping the system simple enough for practical use.