In this work, we review existing cryptocurrency wallet solutions with regard to authentication
methods and factors from the user's point of view. In particular, we distinguish between …

Decentralized Finance (DeFi) is a new paradigm in the creation, distribution, and utilization
of financial services via the integration of blockchain technology. Our research conducts a …

The advent of end-to-end encrypted (E2EE) messaging and backup services has brought
new challenges for usable authentication. Compared to regular web services, the nature of …

This paper explores the relationship between Bitcoin returns, the consumer price index, and
economic policy uncertainty. Employing the QARDL method, this study examines both short …

Blockchain wallets are essential interfaces for managing digital assets and authorising
transactions within blockchain systems. However, typical blockchain wallets often encounter …

Crypto-wallets or digital asset wallets are a crucial aspect of managing cryptocurrencies and
other digital assets such as NFTs. However, these wallets are not immune to security threats …

Web3, also known as the Decentralized Web, is a vision for the next generation of Web
applications, supported by blockchain technology, where users have stronger ownership …

This chapter presents insights, facts, and data to familiarize the reader with the concept of
cryptocurrency. For this purpose, first a brief overview of the history underlying the concepts …

The blockchain ecosystem, particularly with the rise of Web3 and Non-Fungible Tokens
(NFTs), has experienced a significant increase in users and applications. However, this …

We discuss key management for cryptocurrencies from the perspective of security and risk
management. While we found many earlier research studies about the implementation and …