Table of Contents:

1. Introduction
  1.1 Background
  1.2 Evolution of Decentralized Data Sharing
  1.3 Importance of Privacy-Preserving Data Sharing
  1.4 Research Motivation
  1.5 Research Objectives
  1.6 Research Scope
  1.7 Organization of the Thesis

2. Literature Review
  2.1 Overview of Decentralized Data Sharing
  2.2 Privacy Challenges in Data Sharing
  2.3 Blockchain Technology for Privacy Preservation
  2.4 Smart Contracts and Data Access Control
  2.5 Current Approaches to Privacy-Preserving Data Sharing
  2.6 Security and Trust in Decentralized Environments
  2.7 Related Work in Privacy-Preserving Data Sharing

3. Methodology
  3.1 Analysis of Privacy Requirements in Decentralized Data Sharing
  3.2 Blockchain Platform Selection
  3.3 Design of Smart Contracts for Data Access Control
  3.4 Implementation of Privacy-Preserving Mechanisms
  3.5 Evaluation Metrics for Privacy and Security
  3.6 Performance Testing and Scalability Analysis
  3.7 Ethical Considerations in Data Sharing and Privacy

4. Implementation and Results
  4.1 Development of Privacy-Preserving Data Sharing Framework
  4.2 Integration of Smart Contracts for Access Control
  4.3 Experiment Design and Execution
  4.4 Analysis of Privacy-Preserving Mechanisms
  4.5 Performance Comparison with Traditional Data Sharing Methods
  4.6 Visualization of Privacy Enhancements
  4.7 Discussion of Results and Findings

5. Conclusion and Future Work
  5.1 Summary of Research Contributions
  5.2 Implications of the Study
  5.3 Limitations of the Research
  5.4 Future Research Directions in Decentralized Data Sharing
  5.5 Practical Applications and Industry Relevance
  5.6 Recommendations for Privacy-Preserving Data Sharing
  5.7 Conclusion and Final Remarks