Blockchain Driven Privacy Preserving Contact Tracing Framework in Pandemics. (arXiv:2202.09407v2 [cs.CR] UPDATED)

Contact tracing has been proven an effective approach to control the virus
spread in pandemics like COVID-19 pandemic. As an emerging powerful
decentralized technique, blockchain has been explored to ensure data privacy
and security in contact tracing processes. However, existing works are mostly
high-level designs with no sufficient demonstration and treat blockchain as
separate storage system assisting third-party central servers, ignoring the
importance and capability of consensus mechanism and incentive mechanism. In
this paper, we propose a light-weight and fully …

blockchain contact tracing framework privacy tracing