Hossain, TahrimBappy, Faisal HaqueZaman, Tarannum ShailaIslam, Tariqul2025-06-172025-06-172025-04-12https://doi.org/10.48550/arXiv.2504.09319http://hdl.handle.net/11603/38815e 2025 IEEE ICBC Cross-Chain Workshop (ICBC-CCW 2025)This paper introduces CrossLink, a decentralized framework for secure cross-chain smart contract execution that effectively addresses the inherent limitations of contemporary solutions, which primarily focus on asset transfers and rely on potentially vulnerable centralized intermediaries. Recognizing the escalating demand for seamless interoperability among decentralized applications, CrossLink provides a trustless mechanism for smart contracts across disparate blockchain networks to communicate and interact. At its core, CrossLink utilizes a compact chain for selectively storing authorized contract states and employs a secure inter-chain messaging mechanism to ensure atomic execution and data consistency. By implementing a deposit/collateral fee system and efficient state synchronization, CrossLink enhances security and mitigates vulnerabilities, offering a novel approach to seamless, secure, and decentralized cross-chain interoperability. A formal security analysis further validates CrossLink's robustness against unauthorized modifications and denial-of-service attacks.6 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.Computer Science - Cryptography and SecurityText