A Cross‐Chain Architecture for Interoperable and Trusted Multi‐Party Collaboration

ABSTRACT Cross‐chain interoperability is a focal point in blockchain research. However, existing efforts predominantly concentrate on functional realization, such as asset transfer and message relaying, while often overlooking the critical dimension of performance. The effective implementation of these functions faces significant performance challenges, including data verification overhead, traceability delays, and inflexible contract execution. Precisely addressing this gap, this paper proposes a performance‐optimized, relay‐based architecture. Three dedicated core modules are introduced to address these performance bottlenecks: A Shared Data Life‐cycle Management Module for efficient data governance, a Real‐time Cross‐chain Traceability Module for low‐latency tracking, and a Dynamic Smart Contract Management Module for agile cross‐chain logic execution. Implemented on BitXHub, our system demonstrates superior performance, successfully processing 937 out of 1000 transactions and achieving a latency of 6.7 ms under 800 concurrent requests. The framework's practical effectiveness is further validated through deployments in a cross‐border seafood supply chain and a multi‐party Deoxyribonucleic Acid (DNA) data sharing network, proving its value as a high‐performance solution for complex real‐world applications.