Blockchain technology appears to be ready to revolutionise a broad number of industries. However, the blockchain itself contains a number of inefficiencies and areas for improvement, namely: transaction fees and transaction speeds. Directed acyclic graphs (DAGs) address, and improve on these...

A concern often expressed in relation to cryptocurrencies is their environmental impact associated with increasing electricity consumption which is currently unregulated. To assist researchers and policy makers, we developed a new Index of Cryptocurrency Environmental Attention (ICEA) based on...

The growth of cryptocurrency mining in China, still heavily reliant on coal as a fuel for electricity generation, raises natural questions on the inter-relatedness of coal and crypto prices and volatilities. We investigate this, and the safety and thus supply stability of domestic Chinese coal...

This paper examines the relationship between news coverage and Bitcoin returns. Previous studies have provided evidence to suggest that macroeconomic news affects stock returns, commodities and interest rates. We extend the approach developed by Birz and Lott [2011] to examine the hypothesis...

Eastman Kodak is an American technology company that produces imaging products. In 2018, it announced its intentions to enter the crytpocurrency market, raising concerns that it could be taking advantage of a potential cryptocurrency bubble for short-term gains. We analyse the relationships...

In this paper, we estimate an asymmetric frequency TVP-VAR frequency connectedness model and further employ aggregated connectedness measures in order to identify whether cryptocurrencies drive investor sentiment. We find pronounced and time-varying interconnectedness within the cryptocurrency...