Interoperability & Cross-Chain Frameworks

Abstract

Authors: Rohan S Kishore, Mitali Sharma, Anuj Verma, Rupesh Dubey

Abstract: Blockchain technologies have grown rapidly in the last decade, creating many independent chains with unique features and ecosystems. This growth brought a challenge: lack of interoperability between blockchain networks. Without interoperability, blockchains remain isolated siloes that limit data sharing, asset transfer, and coordinated computation. Cross-chain frameworks are emerging solutions to solve the isolation problem. This paper reviews existing interoperability approaches, examines the architectural designs of cross-chain frameworks, compares different techniques, highlights ongoing challenges, and suggests future directions. We also include simple models and tables for clarity. The goal of this paper is to provide a broad understanding for researchers, developers, and industry leaders who want to grasp the core concepts of chain interoperability and evaluate cross-chain frameworks.

Keywords: Blockchain, Interoperability, Cross-Chain Communication, Smart Contracts, Relays, Bridges, Layer 0, Consensus, Distributed Ledger Technology