Persistence is an important characteristic of many complex systems in nature, related to how
long the system remains at a certain state before changing to a different one. The study of …

We explore the evolution of the informational efficiency in 45 cryptocurrency markets and 16
international stock markets before and during COVID-19 pandemic. The measures of …

The global economy is under great shock again in 2020 due to the COVID-19 pandemic; it
has not been long since the global financial crisis in 2008. Therefore, we investigate the …

Non-fungible tokens (NFTs) are a type of digital record of ownership used in a unique way:
ensuring authenticity and uniqueness. Due to these characteristics, NFTs have been used in …

Music is an important part of most people's lives and also of the culture of a country.
Moreover, the different characteristics of songs, such as genre and the chord sequences …

This study investigates the impact of consensus mechanism changes on cryptocurrency
markets within the framework of the efficient market hypothesis, focusing on Ethereum's …

Using of cryptocurrency has boomed in recent years, such as Bitcoin, Ethereum or Ripple. It
is interesting to have a Bitcoin forecasting tool to try to understand the trends at global …

This research is placed within the terrorism studies field, focusing on aspects regarding
terrorism financing, with two main objectives. The first is to present the terrorist financing …

It's no coincidence that the first crypto currency, ie, Bitcoin, was introduced in the year 2008
immediately after the stock market crash which happened in the same year. The crash was …