Suchergebnisse

Cover -- Guest editorial: Cryptocurrencies: current trends and future perspectives -- Predicting bitcoin price movements using sentimentan alysis: a machine learning approach -- Mining netizen's opinion on cryptocurrency: sentimentan alysis of Twitter data -- Is Bitcoin a safe haven? Application of FinTech to safeguard Australian stock markets -- Price efficiency and safe-haven property of Bitcoin in relation to stocks in the pandemic era -- Dynamic frequency relationships between bitcoin, oil, gold and economic policy uncertainty index -- Analysis of diversification benefits for cryptocurrency portfolios before and during theCOVID-19 pandemic -- Time series prediction using machine learning: a case of Bitcoin returns -- Accounting for crypto-assets:stake holders' perceptions -- Investor attention and cryptocurrency price crash risk: a quantile regression approach -- Dissecting the stock to flow model for Bitcoin -- Cryptocurrencies' hashrate and electricity consumption: evidence from mining activities.

AbstractPolicy-makers are struggling to accommodate cryptocurrencies within tax systems not designed to handle them; this paper reviews the issues that arise. The greatest challenges are for implementation: crypto's pseudonymity is an inherent obstacle to third-party reporting. Design problems arise from cryptocurrencies' dual nature as investment assets and means of payment: more straightforward is a compelling case for corrective taxation of carbon-intensive mining. Ownership is highly concentrated at the top, but many crypto investors have only moderate incomes. The capital gains tax revenue at stake worldwide may be in the tens of billions of dollars, but the more profound risks may ultimately be for VAT/sales taxes.

This panel includes three presentations: Cryptocurrencies and Financial Crimes by Marie Vasek; Cryptocurrencies and Specific Drug Types by Eric Jardine; and Bitcoin and OPSEC for Terrorists by Aaron Brantly. (Please note that due to technical difficulties, slides for the last presentation by Aaron Brantly were not captured on the video). The presentations were given as part of the conference "Understanding the Dark Web and Its Implications for Policy" held on May 18, 2018 at the Virginia Tech Executive Briefing Center in Arlington, Virginia. ; Virginia Tech. Department of Political Science ; Virginia Tech. Institute for Society, Culture, and Environment ; Virginia Tech. National Capital Region ; Infragard ; Bluestone Analytics ; Virginia Tech. Integrated Security Destination Area ; Government Technology & Services Coalition

In the introductory part of the paper, the author briefly explores the emergence of the first cryptocurrency (Bitcoin), which was initially devised for the purpose of securing easier transactions without intermediaries. Criminals soon realised that cryptocurrencies, due to their inherent characteristics, could provide them with anonymity. As other cryptocurrencies (altcoins) emerged, it was necessary to define their conceptual framework. While cryptocurrencies were initially used in illegal sales of narcotics, their application soon spread to a number of other criminal activities. In that context, the author first presents the reasons that led criminals to turn to cryptocurrencies in their financial transactions, and then explains the possible uses of cryptocurrencies in the commission of crime. The central part of the paper provides examples of criminal activities committed by using cryptocurrencies. It is reasonable to expect that, in the future, the use of cryptocurrencies will extend to other criminal activities, which are still unaffected by the trend that has existed for the last ten years.

From their shadowy origins in Bitcoin to their use by multinational corporations, cryptocurrencies and blockchains are remaking the rules of digital media and society. Quinn DuPont guides readers through the changing face of money and shows how blockchain technology powers new forms of value exchange and social coordination.