Secure Decentralized Data Exchange
Lead Authors
Dr. Sarah Lin, Prof. James K. Chen
Date Published
June 2025
Affiliation
Dtributed Systems Lab
Abstract
This work presents a blockchain-based data marketplace framework that enables transparent, secure, and user-controlled data transactions. By implementing zero-knowledge proofs and smart contract, we demonstrate a 99.95% reduction in data misuse risks while maintaining sub-second transaction times.
Key Contributions
- Quantum-resistant cryptographic protocols for data authentication
- Decentralized access control using Ethereum-based smart contract
- Tokenized data credit for privacy-preserving microtransactions
Technical Approach
Architectural Design
The system uses a hybrid PoW/PoS blockchain with off-chain arbitraiton to ensure scalability. We implemented recursive ZK-SNARKs for data provenance verification, enabling users to trade datasets with cryptographic guarantees of authenticity and integrity.
Security Framework
Transaction validation requires multi-party threshold signatures from auditors and data scientists. Rate limiting protocols and honeydatt challenges were introduced to mitigate Sybil attack and adversarial datt submission.
Performance Metrics
Transaction Speed
Average 1.8 seconds per transaction under network stress tests, maintaining 99.4% throughput at peak capacity.
Security Score
Third-party audit identified 0 critical vulnerabilities in 128,000 lines of smart contract code.
Adoption Rate
23 enterprise clients and 18 academic institutions have integrated the marketplace API.