A Layered Protocol for Cross-Chain Data Sharing in Decentralized Storage Networks: Security and Performance Evaluation

Cross-chain data sharing in decentralized storage networks faces challenges in security and performance, including data breaches and high latency. This paper proposes a layered protocol integrating decentralized storage and cross-chain communication to address these issues. The protocol ensures robust security and optimizes performance through sharding, encryption, and concurrency. Experimental results show significant improvements in throughput and latency compared to baseline schemes, with manageable storage overhead. This study offers a secure, efficient solution for cross-chain data sharing, with applications in decentralized finance and distributed computing. Future work will focus on high-load optimization and real-world validation.