Titlebook: Advances in Information and Communication; Proceedings of the 2 Kohei Arai Conference proceedings 2023 The Editor(s) (if applicable) and Th

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https://doi.org/10.1057/9781137471567ners on the other hand argue that such mandatory instruments encroach upon our fundamental right to anonymity, freedom of movement, and are a backdoor to issuing “identity documents” to citizens by their governments. We present a privacy-preserving framework that uses two-factor authentication to cr

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https://doi.org/10.1057/9781403984722tion and scalability). In a sharded blockchain the network of nodes responsible for maintaining the blockchain is divided into separate groups called shards such that each shard can process transactions in parallel. In this paper we explore and improve the communication process that happens between

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