ArchW3: An adaptive blockchain wallet architecture for Web3 applications

Abstract

The evolution of Web3 technologies presents significant challenges in integrating decentralized systems with Web2 infrastructures, particularly in secure digital asset management and blockchain interoperability. Existing digital wallet solutions struggle to ensure seamless interoperability, robust key management, and effective integration with both public and private blockchain networks, all while meeting the growing demand for flexible and user-friendly solutions in this rapidly expanding market. To tackle these issues, this paper introduces ArchW3, a modular framework designed to address these challenges through three core components: a Custody Service for secure key management, a Provider Service ensuring blockchain network interoperability, and a Web2/Web3 Communication Interface to simplify application development. Experimental validation involved a $2^k$ factorial design, analyzing transaction processing time, memory usage, CPU usage, and energy consumption under diverse configurations. Results demonstrated ArchW3’s adaptability across EVM and non-EVM networks, such as Ganache and Solana, respectively. Solana exhibited superior efficiency, achieving up to 85% in memory and energy performance under high transactional loads, while EVM-Ganache excelled in low-load processing scenarios with up to 40% better performance. The ArchW3 framework was successfully deployed at Bank BV in Brazil, showcasing its applicability in real financial environments by integrating banking services with Web3 infrastructure.