Smart Contract Interoperability Framework for Cross-Platform Payment Workflows in Multinational Corporations

Abstract

Abstract---Cross-platform corporate payment ecosystems increasingly rely on diverse blockchain architectures and legacy enterprise systems, creating significant challenges in interoperability, workflow synchronization, and transaction reliability. Multinational corporations (MNCs) often operate heterogeneous infrastructures where Ethereum-based smart contracts, Hyperledger Fabric networks, and traditional ERP platforms coexist but cannot seamlessly coordinate high-value payment workflows. This paper proposes an extensible smart-contract-driven interoperability framework designed to orchestrate payment events across heterogeneous blockchain and off-chain environments. The system integrates cross-chain messaging protocols, unified workflow tokens, and atomic execution mechanisms that enable deterministic, auditable, and fail-safe corporate fund transfers. A layered architecture with interoperability gateways, standardized metadata schemas, and adaptive routing logic ensures consistent payment states across chains. Simulated cross-border payment scenarios demonstrate reductions in latency, reconciliation failures, and inter-system inconsistencies when compared to traditional siloed approaches. The findings highlight the ability of the proposed model to enhance transparency, automate multi-chain payment reconciliation, and reduce operational complexity for MNC treasury systems. Overall, the framework represents a scalable approach for unifying legacy ERP processes with emerging blockchain ecosystems, offering a practical pathway toward decentralized yet interoperable corporate payment infrastructures.