Plagiarism Detector with zk-Proofs & NFT Minting

Overview

This project implements a privacy-preserving plagiarism detector that calculates a similarity score for text documents using Euclidean distance. The similarity score is then verified using zk-proofs via RISC0, submitted to zkVerify, and verified on EduChain. If the document meets originality criteria, an NFT is minted to certify authenticity.


Features

✅ Privacy-Preserving – No need to reveal the full document; only the similarity score is proven. ✅ Zero-Knowledge Proofs (zk-Proofs) – Ensures trustless verification of plagiarism scores. ✅ On-Chain Verification – Uses EduChain for final proof verification. ✅ NFT Certification – Mints an NFT for original works as proof of authenticity. ✅ Decentralized & Secure – Leverages blockchain and zk-proofs to ensure data integrity. ✅ Tamper-Proof Record – The NFT serves as a publicly verifiable proof of originality. ✅ Immutable Proof of Work – Ensures authorship cannot be disputed.

How It Works

1. Plagiarism Detection: The system calculates the similarity score between a given text and a reference dataset using Euclidean distance.
2. zk-Proof Generation: A zk-proof of the similarity score is generated using RISC0.
3. zkVerify Submission: The proof is submitted to zkVerify for validation.
4. EduChain Verification: The validated proof is then verified on EduChain.
5. NFT Minting: If the similarity score is below the plagiarism threshold, an NFT is minted, proving the document's originality.

Benefits

🔹 Data Privacy – The document's content remains confidential; only the zk-proof is used for verification. 🔹 Immutable Proof of Originality – The minted NFT acts as verifiable proof that the work is original. 🔹 Decentralized Trust – No centralized entity determines originality; it's verified cryptographically on-chain. 🔹 Scalability – zk-proofs allow efficient verification without requiring the full document to be stored on-chain. 🔹 Verifiable Authorship – Establish a transparent and tamper-proof record of document originality. 🔹 Blockchain-Backed Integrity – Protect intellectual property rights through decentralized validation.

Technologies Used

• Plagiarism Detection – Euclidean Distance Metric
• Zero-Knowledge Proofs – RISC0
• On-Chain Verification – zkVerify & EduChain
• NFT Minting – Smart contract on EduChain
• Cryptographic Hashing – Ensures document integrity without exposing content

Setup & Usage

1. Clone the repository:

   git clone https://github.com/iitianpushkar/ZK-PlagiarismDetector.git
   cd plagiarism-detector

2. For frontend:

   cd frontend
   npm install
   npm run dev

3. For backend:

   cd backend
   uvicorn main:app --reload

4. For zkvm:

   cd zkvm
   cd hasher
   cargo run

5. For Nodejs-Server:

   cd Nodejs-Server
   npm install
   node server.js

Use Cases

🎓 Academic Integrity – Universities can verify originality of research papers and theses. ✍️ Content Creators – Writers and bloggers can certify their work originality on-chain. 📜 Legal Documentation – Ensure authenticity of legal documents without exposing contents. 🔍 Corporate Compliance – Companies can verify originality of reports and presentations. 📚 Publishing Industry – Helps publishers protect intellectual property and verify original works.

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✨ Empowering originality with blockchain & zero-knowledge proofs! 🚀