Farbod Behnaminia and Saeed Samet, University of Windsor, Canada

The COVID-19 pandemic emphasizes the significance of contact tracing for virus control but raises privacy concerns. Blockchain technology offers potential solutions, yet challenges exist for safeguarding sensitive information and enabling interoperability with other chains. This research explores using Polkadot's cross-blockchain feature for decentralized and privacy-oriented contact tracing. Our proposed solution stores personal data on a private blockchain, accessible to authorized entities only. Encryption ensures data security. Additionally, the Polkadot network's interoperability enables sharing data with health authorities or other blockchain networks. This study demonstrates the benefits and limitations of cross-blockchain contact tracing, urging further research and development. An effective and privacy-respecting contact tracing solution is attainable with the right approach.

Cross-blockchain Technology, Interoperability, Scalability, Digital Contact Tracing