Special Problem Proposal: A Prototype of University Electronic Blockchain-Based Bidding App (e-3ba)

Abstract

This study presents the design, development, and implementation of an Electronic Blockchain-Based Bidding Application (E-3BA) aimed at improving transparency, security, and auditability in public procurement. Traditional procurement systems are often prone to inefficiencies, document tampering, and a lack of traceability. To address these issues, the proposed system integrates blockchain technology using Hyperledger Fabric with decentralized file storage via the InterPlanetary File System (IPFS). The system was developed as a prototype tailored to the workflows of government-aligned institutions, such as the University of the Philippines Manila. The E-3BA supports multiple user roles, end-users (project proposers), bidders, bidding and awards committee (BAC) members, and administrators (PMO), each with role-based access enforced by a Membership Service Provider (MSP). Smart contracts automate key processes including project registration, bid submission, document evaluation, and selection of the winner. All critical transactions are immutably recorded on the blockchain, while supporting documents are stored off-chain and verified through hash comparisons. System testing demonstrated successful integration of blockchain logic with Django-based backend workflows. Results confirmed that the system effectively enforces deadlines, prevents post-submission tampering, and ensures process traceability. In addition, mechanisms for error handling, audit trails, and user accountability were verified through logs and hash-based validations. The E-3BA prototype serves as a proof-of-concept for secure, transparent, and scalable procurement platforms. While the current implementation is limited by features such as single-document support and lack of bidder anonymity, it lays the foundation for future deployment in national procurement systems.