ClaimSafe – Blockchain-Based Lost and Found Management System
A blockchain-powered lost and found system that protects privacy and helps prevent fraudulent ownership claims.
Project overview
What this project is about.
ClaimSafe is a blockchain-based Lost and Found Management System designed to help people recover lost belongings more securely. In colleges, offices, and public places, people often lose items such as mobile phones, wallets, bags, keys, and identity accessories. When someone finds an item, it can be difficult to identify the real owner. Sometimes, another person may falsely claim that the item belongs to them.
ClaimSafe addresses this problem by combining blockchain technology, cryptography, and a web-based management system. Before losing an item, a user can register it by entering general information and a few private details that only the real owner should know. The system converts these private details into a cryptographic fingerprint, which acts like a digital representation of the information. Instead of publishing the original secret details on the blockchain, the system records the fingerprint and registration time.
When someone finds an item, a designated custodian, such as a college lost-and-found staff member, can record the item's public details in the system. The owner can then submit a claim to recover the item. ClaimSafe checks whether the owner's registration was made before the item was found and whether the submitted information matches the registered proof. Smart contracts help enforce these rules and maintain records that can be independently verified.
The system also includes a dashboard for viewing campus lost-and-found statistics and an evaluation lab for examining security scenarios, cryptographic fingerprint resistance, blockchain transaction costs, and database tampering. These features help students understand how blockchain applications can be designed, tested, and evaluated.
ClaimSafe is suitable for students who want to learn about blockchain development, smart contracts, web application development, cryptography, and secure digital record management. The project uses a local blockchain test environment for demonstration and learning.
Who it is for
Usage and use case
- Register belongings before they are lost by providing general information and private verification details.
- Record found items through the designated lost-and-found custodian.
- Submit ownership claims and verify them against earlier registrations.
- Use smart contracts to enforce claim rules and record important events.
- View campus statistics about logged and returned items.
- Explore the evaluation lab to test security scenarios, fingerprint attacks, gas costs, and database integrity.
- Learn how frontend applications, backend APIs, databases, and blockchain smart contracts work together.
Built with
Technology stack
- React
- TypeScript
- Vite
- Python
- FastAPI
- Solidity
- Hardhat
- OpenZeppelin
- SQLite
- SQLAlchemy
- Alembic
- Ethers.js
- Web Crypto API
- ECIES
- Fernet
- Mocha
What you get
Key features
- Register items before they are lost
- Generate cryptographic fingerprints from private item details
- Record registration timestamps on the blockchain
- Protect private details through encryption and controlled disclosure
- Log found items through a custodian
- Submit ownership claims for lost belongings
- Check claims against previous registrations and verification rules
- Record blockchain transactions for important item events
- Confirm the physical handover of recovered items
- Support dispute resolution through designated roles
- Display campus lost-and-found statistics
- Evaluate security attack scenarios and fingerprint resistance
- Compare smart contract transaction gas costs
- Test database tampering and record integrity
- Provide a local blockchain environment for demonstration
Before you start
Requirements
Node.js 24
Python 3.12
uv Python package manager
npm
Git
A code editor such as Visual Studio Code
A modern web browser
Internet connection for initial dependency installation, if required
Project media
A closer look.
Optional extras
Boost your project
Optional extras to help you document, present and understand your work. Mention the ones you like when you enquire.
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Popular Documentation support Submission-ready project report. - Full project report (PDF and Word)
- Setup guide and README
- Diagrams and screenshots
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Presentation support Slides ready for your review. - Slide deck of 12 to 15 slides
- Speaker notes
- Demo walkthrough script
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Publication support Guidance to turn it into a paper. - Paper structure and abstract
- Journal and format guidance
- Reference and plagiarism-check help
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1:1 mentorship Live help from a mentor. - 45-minute video call
- Code walkthrough
- Viva question practice
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Can a project be changed to fit my requirements?
Yes. Describe the changes you need when you enquire, and we confirm the scope and the price before any work starts.
Are add-ons available?
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Is there a demo?
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Can I get a refund?
Projects are digital, so payments are generally not refundable. If something went wrong, send a refund request with your order reference and we review it fairly. The Refund Policy explains the details.
