Designing Scalable Blockchain Applications through Cross-ChainInteroperability and API Integration: A Software Engineering Approachfor Heterogeneous and Multi-Platform Environments

Abstract

The research details the process of developing scalable blockchain applications by implementing cross-chain interoperability with API interfaces in software settings made for heterogeneous multi-platform systems. Research works to create a framework which boosts scalability elements alongside cross-chain communication management and simplifies decentralized applications (DApps) integration process. This study adopts a mixed-methods methodology which includes data from developer interviews as well as quantitative performance tests of cross-chain methods Cosmos IBC, LayerZero and Polkadot. The developed framework helps blockchain systems perform better in transaction speed while decreasing the complexity required for inter-blockchain network connections. The developers who used the methodology highlighted their requirements for better documentation as well as improved tools and easier-to-use APIs.nThe recommended actions involve automated onboarding solutions while developers need improved experience features and smart contract security integration during deployment processes. Future researchers should unite AI optimization systems with chain selection processes and study zero-knowledge interoperation methods while adding support to EVM-independent systems including NEAR and Tezos. Research testing in realistic industrial environments of finance at large with supply chains and digital identity systems will unveil crucial security and adaptation patterns of this proposed framework.