Secure and Scalable Blockchain Architecture for Seamless Cross-Border Payment and Settlement Systems

Abstract

The payment and settlement systems existing between nations are plagued by constant high costs of transactions, slow speed of the processes and also lack of transparency after the transactions touch other parties. The study suggests a safe and scalable blockchain platform that will support cross-border financial transfers. The architecture uses hybrid consensus integration of proof-of-stake and Byzantine fault tolerance to improve security and provide efficiency. A layered modular design supports interoperability between various financial institutions and regulatory regimes, and smart contract-based automation supports transparent settlement and compliance verification. Scalability is realized by sidechain integration and use of sharding algorithm which help it achieve high transaction throughput without jeopardizing security. The system proposed here eliminates reliance on third parties, settlement risks and offers confirmation of transactions with an audit trail in near real-time. The joint focus of the framework on trust, speed, and compliance means that it is a complete solution that supports any strategy to modernize global payment ecosystems, including in ways that can lead to financial inclusion and more efficient cross-border trade finance.