Abstract
A blockchain-based document approval platform designed for the University of Bahrain's multi-college structure is introduced by the suggested system. By implementing a Hyperledger Fabric 2.5 network across five colleges with six peers and a MAJORITY endorsement policy (3/5), it addresses significant problems with traditional workflows, including sluggish approvals, limited transparency, and tampering threats.
Document submission, tracking, and real-time notifications are made possible by an intuitive frontend, while multi-stage workflows are automated by Go-based smart contracts. PostgreSQL is used for profiles and metadata in a hybrid store approach, while blockchain is used for unchangeable approval records.
Testing demonstrates a safe and open institutional solution by verifying the dependability of process automation, peer failover, access control, versioning, and audit trails.
Objectives
- To build and establish a document approval system using Hyperledger Fabric
- Minimize the approvals delay of a document by implementing a multi-stage workflow process
- In the network we want to make sure of high reliability through the majority endorse by the organization
- Provide a user-friendly system to submit and keep track of the document approval process
- Develop a hybrid design which will combine the blockchain for integrity and PostgreSQL for data storage
Methodology & Approach
The system follows a hybrid on-chain and off-chain architecture. Blockchain technology ensures immutability of approval records, while off-chain storage handles document files and metadata for efficiency.
- Layered system architecture (Frontend, API, Blockchain, Storage)
- Modern frameworks for backend and frontend development
- Iterative and modular development approach
- Containerized deployment environment
Technologies Used
Programming Languages
Go
JavaScript
Frameworks & Platforms
Hyperledger Fabric
React
Databases & Storage
PostgreSQL
CouchDB
DevOps & Tools
Docker
REST APIs
Results
- Built document system with Hyperledger Fabric to store records on blockchain
- Created 5 organizations in the network with six peers
- Implemented notification using Firebase Cloud Messaging
- Multi-stage approval flow by using smartcontract
- Achieving integrity of the records and document hash that are stored in the blockchain and to get verified approval
System Screenshots
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Demo
Salman Pitch Video (English version)
Yusuf Pitch Video (Arabic version)
Live Demo
Conclusion & Future Work
This project demonstrates that we can develop a complete workflow system based on blockchain and implement it internally within an institute, organization, or enterprise.
Future work: Enhanced notification, Intelligent document archiving, Pre-submission collaborative editing, AI powered workflow.
About the Project & Team
This project is a Final Year Senior Project completed during Semester 1 of the Academic Year 2025/2026 at the College of Information Technology University of Bahrain.
| Name | Student ID | Major | ||
|---|---|---|---|---|
| Yusuf Ahmad Jassim | 202010375 | Computer Engineering | 202010375@stu.uob.edu.bh | linkedin.com/in/yourprofile |
| Salman Salah Mohamed | 202002586 | Computer Engineering | 202002586@stu.uob.edu.bh | linkedin.com/in/salman-salahkh |
Supervisor
| Name | Rank | |
|---|---|---|
| DR. Mohamed A. Almeer | malmeer@uob.edu.bh | Assistant Professor |