Police Record Management Using Private Ethereum Blockchain
Secure police record management using a private Ethereum PoA blockchain, MetaMask, MongoDB, and IPFS for tamper-proof evidence storage.
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This project is a complete blockchain-based police record management solution developed using a Private Ethereum (PoA) network, Solidity smart contracts, MetaMask authentication, MongoDB, Node.js, Express.js, and IPFS/Filebase. It includes role-based modules for Police, Forensics, Court, and Anonymous Evidence submission, along with complete source code, documentation, architecture diagrams, and setup instructions. The project is suitable for academic learning, blockchain research, portfolio development, and full-stack application reference.
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Blockchain-Based Police Record Management System is a secure and decentralized web application designed to improve the management of police records using a Private Ethereum Blockchain with Proof of Authority (PoA) consensus. The system addresses common challenges in traditional record management, such as unauthorized modification, lack of transparency, and limited auditability.
The application provides separate modules for Police, Forensics, and Court authorities with secure MetaMask-based authentication and role-based access control. Police officers can register FIRs and upload evidence, forensic personnel can submit investigation reports, and court authorities can review verified records and record verdicts. An anonymous evidence submission module allows citizens to securely contribute evidence without revealing their identity.
Large files such as FIR documents, images, videos, and forensic reports are stored using IPFS/Filebase, while only their cryptographic hashes are recorded on the blockchain through Solidity smart contracts. MongoDB stores application metadata such as user information, case details, and evidence references.
By combining blockchain immutability, decentralized file storage, and a modern full-stack architecture, the system provides a transparent, secure, and tamper-resistant solution for police record management.
Future Enhancements
• Mobile application support
• AI-assisted evidence analysis
• Multi-factor authentication
• Cloud deployment
• Integration with national police databases
• Advanced analytics dashboard
• Real-time notifications
• Zero-Knowledge Proof (ZKP) integration for enhanced privacy
Known Issues
Currently configured for deployment on a private Ethereum network. Public blockchain deployment and cloud hosting are not included in this version.
Installation
Prerequisites
- Node.js (v18 or above)
- MongoDB
- Geth (Go Ethereum)
- MetaMask Browser Extension
- Git
- Visual Studio Code (Recommended)
Installation Steps
- Clone the repository:
git clone https://github.com/your-username/Blockchain-Based-Police-Record-Management-System.git
- Navigate to the project directory:
cd Blockchain-Based-Police-Record-Management-System
- Install dependencies:
npm install
- Start MongoDB.
- Start the Private Ethereum (PoA) network using Geth.
- Connect MetaMask to the private blockchain network.
- Deploy the Solidity smart contracts if required.
- Start the backend server:
npm start
- Open the frontend in your browser and access the application.
The application is now ready for use.
Usage
- Launch the application in the browser.
- Connect MetaMask to the configured Private Ethereum (PoA) network.
- Log in using the appropriate role:
- Police
- Forensics
- Court
- Police users can create FIRs, register cases, and upload digital evidence.
- Evidence files are stored in IPFS/Filebase, while their cryptographic hashes are recorded on the blockchain.
- Forensics users can review evidence and upload forensic reports.
- Court users can verify records and submit verdicts.
- Citizens can securely submit anonymous evidence through the Public Portal.
- Every blockchain transaction is permanently recorded and can be verified using transaction hashes.
System Requirements
Operating System:
- Windows 10/11 or Ubuntu Linux
Hardware:
- Intel Core i5 Processor or above
- Minimum 8 GB RAM
- 10 GB Free Disk Space
Software:
- Node.js v18+
- MongoDB
- Geth (Go Ethereum)
- MetaMask Browser Extension
- Google Chrome / Microsoft Edge
- Git
Blockchain:
- Private Ethereum Network
- Proof of Authority (Clique)
Storage:
- IPFS/Filebase
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