Blockchain Papers

Follow blockchain research across journals, conferences, and preprint repositories.

2,964 papersLast indexed Aug 31, 2026
Search papers

Paper index

2,964 results · page 34 of 124

Clear filters
Dec 25, 2023·Scientific notes
0 cites
Digital currencies and their regulation: current challenges and monetary policy analysis

Volodymyr Vrydnyk

The article thoroughly investigates the topic of development and regulation of digital currencies. Considering the global spread of digital assets, particularly cryptocurrencies, the article analyzes current challenges arising in the context of monetary policy and financial stability. The article examines the main concepts of digital currencies, including blockchain technologies and decentralized finance, as well as the characteristics of the approach to regulating these new assets in view of potential challenges for lawmakers, regulators, and central banks. The impact of digital currencies on monetary policy is analyzed in terms of potential effects on macroeconomic development: inflation, currency control, and financial stability. Also, the challenges and opportunities that digital currencies present for the traditional banking system are discussed. Monetary regulation of cryptocurrencies is a critically important aspect within the broader regulatory spectrum, involving supervision and control of digital currencies by central authorities, both from the perspective of fiat currencies and in terms of the processes of digitization overall. Cryptocurrencies, such as Bitcoin, typically have a capped supply, distinguishing them from traditional fiat currencies. This impacts monetary policy instruments like interest rates and money supply control, as there is no central authority regulating these parameters. Digital assets seamlessly operate across borders, challenging traditional structures of monitoring and controlling international transactions, making them vulnerable to cyber attacks and fraud. Especially in the early stages of development, cryptocurrencies may lack clear foundations or intrinsic value, unlike traditional assets such as stocks, often evaluated based on quarterly reports, earnings, and transparent financial indicators. Cryptocurrencies may be subject to more subjective influences, such as the impact of social media or the media, potentially leading to the formation of a phenomenon known as the ‘cryptocurrency bubble,’ driven by unjustified fluctuations in the prices of Bitcoin and other altcoins. This phenomenon resembles economic bubbles in traditional financial markets, characterized by sharp increases in asset prices driven by speculation and excessive buying rather than fundamental factors like underlying value or utility. The article provides general recommendations and practices for the regulation of digital currencies, supporting the innovative nature of digital assets in contemporary realities. With a primary focus on digital assets and their regulation, particularly cryptocurrencies, the article examines current challenges in the realm of monetary policy and financial stability, as well as fundamental concepts related to digital assets.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Economic and Technological Developments in Russia
Original source
Dec 25, 2023·Applied and Computational Engineering
1 cites
Predicting cryptocurrency investment suitability using machine learning techniques

Xiaoke Song

The study aims to predict the close prices of four different cryptocurrencies (Bitcoin, Ethere-um, Dogecoin, and Cardano) using machine learning techniques and determine which of these cryptocurrencies is suitable for investment. To achieve this goal, we used two popular gradi-ent boosting algorithms: Extreme Gradient Boosting (XGBoost) and Light Gradient-Boosting Machine (LightGBM). Prediction accuracy of the trained model is evaluated by Mean Abso-lute Error (MAE) generated by the methodology of Cross-Validation. Our results show that both XGBoost and LightGBM can effectively predict the close prices of the four cryptocur-rencies, with LightGBM achieving slightly better performance in terms of prediction accura-cy. Based on our analysis, we were able to identify which cryptocurrencies were suitable for investing and provide recommendations for potential investors. Overall, our study highlights the potential of machine learning techniques in predicting cryptocurrency close prices and identifying suitable investment opportunities.

Open access
Stock Market Forecasting Methods
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Original source
Dec 25, 2023·Journal of risk and financial management
9 cites
Unveiling the Influencing Factors of Cryptocurrency Return Volatility

Andromahi Kufo, Ardit Gjeçi, Artemisa Pilkati

The blossoming of cryptocurrencies during the last decade has largely influenced both the financial and the technological world. Bitcoin emerged on the edge of the financial crisis in 2008, signaling the very beginning of a financial and technological innovation, which in continuance would eventually create a lot of questions and debate previously unforeseeable. This paper aims to explore the impact of factors such as trading volume, information demand, stock returns, and exchange rates on the volatility of returns for decentralized and unbacked cryptocurrencies from 2016 to 2022 by employing the GARCH model. Based on each coin’s innate functional characteristics and market performance quantified by their respective market capitalization, the selection included Bitcoin, Ether, and XRP as representative crypto coins for the category of decentralized and unbacked cryptocurrencies. The implementation of correlation analysis and the use of the GARCH model on influencing factors for each coin revealed that decentralized and unbacked cryptocurrencies are positively related to trading volume, information demand, and exchange rates while being indifferent to a certain extent to the stock market returns of the world stock index MSCI ACWI. The results of this study provide further insight into the behavior of cryptocurrency return volatility in the new, ever-changing, and highly unpredictable crypto market as well as aid investors in their decision-making process concerning portfolio optimization.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Complex Systems and Time Series Analysis
Original source
Dec 23, 2023·Erciyes Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi
1 cites
BİTCOİN İLE EMTİALAR ARASINDAKİ ZAMANLA DEĞİŞEN VOLATİLİTE YAYILIMLARI

Zekai ŞENOL

Kripto varlıklar pay senetleri ve emtialar gibi geleneksel yatırım araçlarıyla karşılaştırıldığında daha az düzenleme, düşük işlem maliyetleri, merkeziyetsizlik gibi bazı avantajlara sahiptirler. Kripto varlıklar ortaya çıkışlarından günümüze kadar fiyat, hacim ve değer bakımından artarak portföylerde kendilerine yer edinmeye başlamışlardır. Kripto varlıkların geleneksel yatırım araçlarıyla olan ilişkileri portföy yönetimi açısından sonuçlar ortaya çıkarabilir. Bu çalışmada bitcoin ile altın, petrol, doğal gaz ve emtia endeksinden oluşan emtialar arasındaki volatilite yayılımları incelenmiştir. Çalışmada 24 Ağustos 2016 – 13 Ocak 2023 dönemine ait günlük veriler varyansta nedensellik ve Lu, Hong, Wang, Lai ve Liu (2014) tarafından geliştirilen zamanla değişen varyansta nedensellik testiyle incelenmiştir. Çalışmada bitcoinden altın ve emtia endeksine doğru ve doğal gazdan bitcoine doğru tek yönlü volatilite yayılımı görülmüştür. Bitcoin ile emtilar arasında düşük düzeyde zamanla değişen volatilite yayılımı belirlenmiştir. Sonuçlar portföy yönetimi, portföy riskinin yönetilmesi, yatırım kararları açısından önem taşımaktadır.

Open access
Market Dynamics and Volatility
Blockchain Technology Applications and Security
Financial Markets and Investment Strategies
Original source
Dec 21, 2023·Research in International Business and Finance
4 cites
The impact of ECB’s Quantitative Easing on cryptocurrency markets during times of crisis

Donia Aloui, Riadh Zouaoui, Houssem Rachdi, Khaled Guesmi · 5 authors

In this paper, we investigate non-linear linkages between Bitcoin and the unconventional monetary policies of the European Central Bank (ECB). In particular, we examine whether a low-interest rate environment resulting from QE indirectly encourages investors to move towards Bitcoin. Using a Bayesian VAR model with time-varying coefficients and stochastic volatility (TVP-BVAR-SV model), we compare Bitcoin’s responses to the shadow rate shocks during the pre-and post-COVID-19 periods. Moreover, despite the high uncertainty and the low-interest rate environment, Bitcoin's response during the COVID-19 period reveals a steeper drop compared to the pre-COVID-19 period. That said, investors did not resort to Bitcoin for safety and higher returns. Our findings can be attributed to the unprecedented nature of the crisis, the investor reluctance and pessimism, and the changing behavior of Bitcoin, which is no longer perceived as a safe haven.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Banking stability, regulation, efficiency
Original source
Dec 21, 2023·Global Review of Islamic Economics and Business
1 cites
Navigating Uncertainty: The Role of Digital Assets

Afzol Husain

This research studies the dynamic connectedness among digital assets proxied by non-fungible tokens (NFTs), Islamic cryptocurrencies, and conventional cryptocurrencies with the US Economic Policy Uncertainty (EPU) and Geopolitical Risk (GPR) indices. We also examine the hedge and safe haven properties of the aforementioned digital assets against the uncertainties. Using wavelet coherence analysis from 19 January 2018 to 31 October 2023, we show that NFTs react heterogeneously to changes in uncertainties while cryptocurrency reacts inversely. NFTs and conventional cryptocurrencies can only act as diversifiers, but neither as a hedge nor a safe haven against uncertainties. However, Islamic cryptocurrencies have the potential to act as both a hedge and a safe haven against uncertainties. Our findings shed light on the role of emerging digital assets in formulating investment strategies and ensuring stability in the financial markets. Originality/Value: Given the immense potential of digital assets, a remaining research gap concerns their interplay with uncertainty. In other words, given the presence of extreme market turmoil over recent years, no consensus is present in terms of highlighting the dynamic co-movement between digital assets such as NFT, Islamic cryptocurrencies, and global uncertainty factors. In addition to that, the lead-lag relationship among digital assets and uncertainties are also unknown till date. The current study fills this gap by providing robust evidence.

Open access
Market Dynamics and Volatility
Blockchain Technology Applications and Security
Financial Markets and Investment Strategies
Original source
Dec 21, 2023·Financial Innovation
8 cites
Whether and when did bitcoin sentiment matter for investors? Before and during the COVID-19 pandemic

Ahmet Faruk Aysan, Erhan Muğaloğlu, Ali Yavuz Polat, Hasan Tekin

Abstract Using a wavelet coherence approach, this study investigates the relationship between Bitcoin return and Bitcoin-specific sentiment from January 1, 2016 to June 30, 2021, covering the COVID-19 pandemic period. The results reveal that before the pandemic, sentiment positively drove prices, especially for relatively higher frequencies (2–18 weeks). During the pandemic, the relationship was still positive, but interestingly, the lead-lag relationship disappeared. Employing partial wavelet tools, we factor out the number of COVID-19 cases and deaths and the Equity Market Volatility Infectious Disease Tracker index to observe the direct relationship between a change in sentiment and return. Our results robustly reveal that, before the pandemic, sentiment had a positive effect on return. Although positive coherence still existed during the pandemic, the lead-lag relationship disappeared again. Thus, the causal relationship that states that sentiment leads to return can only be integrated into short-term trading strategies (up to six weeks frequency).

Open access
Market Dynamics and Volatility
Blockchain Technology Applications and Security
Financial Markets and Investment Strategies
Original source
Dec 19, 2023·ABAC Journal
6 cites
The Causal Relationship between Cryptocurrencies and Other Major World Economic Assets: A Granger Causality Test

Umawadee Detthamrong, Seksak Prabpala, Akkharawoot Takhom, Nattapong Kaewboonma · 6 authors

This study examines the causal relationship between cryptocurrencies and other major world economic assets, such as gold, stocks, oil, and bonds, using both Granger causality and correlation analyses. The study focuses on the period between 2018 and 2022, using a vector autoregressive model (VAR) to analyze data on cryptocurrencies and other major world economic assets, which collectively represent over 90% of the market during the observed period. Results show that correlation clearly identifies causal interdependency between cryptocurrencies and other major world economic assets and that the variation in cryptocurrencies increasingly explains other major world economic assets. The results reveal that there is Granger causality between the cryptocurrencies (Tether, USD Coin, and Binance USD) and the other major world economic assets (BOND, SP500, and GOLD). Additionally, the study finds evidence that market inefficiency in the cryptocurrency market increased between 2018 and 2022. The findings suggest that the properties of the cryptocurrency market are highly dynamic and that researchers should be hesitant to generalize the market properties observed during idiosyncratic periods. The relevant information is swiftly reflected in asset prices when investors are more interested in a news event, increasing volatility. Strong evidence suggests that volatility spill overs increase sharply at this time. The structure of these markets frequently changes, and a large number of cryptocurrencies appear and disappear every day.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Stock Market Forecasting Methods
Original source
Dec 19, 2023·Theoretical and Natural Science
4 cites
Bitcoin price forecasting using ARIMA model

Haolin Tian

The Bitcoin price was chosen as the research subject, and the observation period was set from January 2015 to September 2023. An ARIMA time series model was constructed to forecast the trading price. The results indicate that the optimal model for fitting the trading price is ARIMA (3, 2, 8). This model takes into account trends, seasonality, and other factors that may impact the price of Bitcoin. By analyzing the historical data, the model was able to accurately predict the short-term fluctuations in Bitcoin’s trading price. Based on this, short-term predictions were made for Bitcoin’s trading price in the next year. Recommendations were then provided by combining the forecast results with the economic development situation in the post-pandemic era. The recommendations suggest that Bitcoin has become a low-quality asset and is no longer suitable for diversifying one’s investment portfolio, but rather focus on the development of physical industries and adjust one’s investment portfolio in a timely manner.

Open access
Blockchain Technology Applications and Security
Stock Market Forecasting Methods
Market Dynamics and Volatility
Original source
Dec 18, 2023·Scientific Annals of Economics and Business
1 cites
Cryptocurrency Returns Over a Decade: Breaks, Trend Breaks and Outliers

Suleiman Dahir Mohamed, Mohd Tahir Ismail, Majid Khan Majahar Ali

This study finds breaks, trend breaks, and outliers in the last decade returns of five cryptocurrencies Bitcoin, Ethereum, Litecoin, Tether USD, and Ripple that experienced frequent changes. The study uses the indicator saturation (IS) approach to simultaneously identify breaks, trend breaks, and outliers in these returns to gain a deeper understanding in their dynamics. The study found that monthly, weekly and daily breaks existed in these returns as well as trend breaks, and outliers mostly during the market peaks in 2017, 2018, 2020, and 2021 that can be attributed to a number of things, such as the global Covid-19 pandemic in 2020, the 2021 crypto crackdown in China, the 2020 price halving of Bitcoin, and the 2017–2018 initial coin offering (ICO) boom. These returns also have common break segments and outliers. The application of IS technique to cryptocurrencies and simultaneous detection of market breaks, trend breaks, and outliers makes this study unique. This study is limited to considering only returns of five digital coins. These results may help traders, investors, and financial analysts modify their tactics and risk-management techniques to deal with the complexity of the cryptocurrency market.

Open access
Market Dynamics and Volatility
Complex Systems and Time Series Analysis
Blockchain Technology Applications and Security
Original source
Dec 16, 2023·Blockchain Research and Applications
7 cites
Time-varying nexus and causality in the quantile between Google investor sentiment and cryptocurrency returns

Fatma Ben Hamadou, Taicir Mezghani, Mouna Boujelbène Abbes

Understanding the interplay between investor sentiment and cryptocurrency returns has become a critical area of research. Indeed, this study aims to uncover the role of Google investor sentiment on cryptocurrency returns (including Bitcoin, Litecoin, Ethereum, and Tether), especially during the 2017-18 bubble (January 01, 2017, to December 31, 2018) and the COVID-19 pandemic (January 01, 2020, to March 15, 2022). To achieve this, we use two techniques: quantile causality and wavelet coherence. First, the quantile causality test unveils that investors’ optimistic sentiments have notably higher cryptocurrency returns, whereas pessimistic sentiment has significantly opposite effects. Moreover, the wavelet coherence analysis shows that co-movement between investor sentiment and Tether cannot be considered significant. This result supports the role of Tether as a stablecoin in portfolio diversification strategies. In fact, the findings will help investors improve the accuracy of cryptocurrency return forecasts in times of stressful events and pave the way for enhanced decision-making utility.

Open access
Financial Markets and Investment Strategies
COVID-19 Pandemic Impacts
Market Dynamics and Volatility
Original source
Dec 13, 2023·International Journal for Research in Applied Science and Engineering Technology
2 cites
Cryptocurrency Price Prediction Using Machine Learning Techniques

Shravya Barla

Abstract: The goal of this project is to use machine learning to forecast cryptocurrency values. As a result of their high levels of volatility, cryptocurrencies are notoriously difficult to anticipate in terms of value. SARIMA (Seasonal Auto Regressive Integrated Moving Average) algorithm that we suggest using to capture the intricate dynamics of the bitcoin market. Our machine learning models will be trained using the gathered data, and they will then be utilised to forecast future cryptocurrency values. The project's final product is anticipated to be a useful tool for cryptocurrency traders, analysts, and investors, giving them a more precise way to make data-drive investment decisions.

Open access
Stock Market Forecasting Methods
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Original source
Dec 13, 2023·European Journal of Finance
21 cites
Cryptocurrency research: future directions

Andrew Urquhart, Larisa Yarovaya

Since Bitcoin was first proposed in late 2008 and went live in 2009, hundreds of research papers have been published trying to understand the behaviour of cryptocurrencies and their impact on financial markets. Their size and importance to the financial sector has increased substantially also has the number of challenges they face and the negative externalities they have caused. This article reviews the related cryptocurrency literature and introduces articles included in this special issue on this theme which were presented at the 2020 Cryptocurrency Research Conference. We conclude by offering possible future research directions.

Open access
Blockchain Technology Applications and Security
FinTech, Crowdfunding, Digital Finance
Market Dynamics and Volatility
Original source
Dec 12, 2023·Green and Low-Carbon Economy
1 cites
Tokenized Indexed-Green Bonds: Funding the Decarbonisation of Ammonia Production

Don Charles

This study seeks to investigate how distributed ledger technology can be applied to the green bond market. Second, this study examines how green bonds can finance the suck cost of decarbonizing the ammonia industry. Third, this study seeks to forecast the spot price of ammonia. This forecast is relevant since the bond’s coupon should be indexed and linked to the price of ammonia. The proposed tokenized indexed-green bond is a new idea that leverages the technologies of distributed ledgers, indexation, and green bonds. No study to current date has undertaken such research that integrates these technologies to fund the decarbonization of the ammonia industry. Data was collected on the spot price of ammonia from the Central Bank of Trinidad and Tobago online database at the monthly frequency over the January 1991 to June 2023 period. The applied forecasting methodology was a hybrid framework combining Particle Swarm Optimization and Support Vector Regression. This study found that an out-of-sample forecast for ammonia prices would be US$438.89/ton in the 1st quarter, US$289.99/ton by the 2nd quarter, US$448.30/ton by the 3rd quarter, and US$331.57/ton by the 4th quarter. The decarbonization of the ammonia industry is technically possible. Economically, it would involve leveraging several technologies such as green bond financing, tokenization, and indexation. Received: 26 May 2023 | Revised: 1 September 2023 | Accepted: 3 December 2023 Conflicts of Interest The author declares that he has no conflicts of interest to this work. Data Availability Statement Data available on request from the corresponding author upon reasonable request. Author Contribution Statement Don Charles: Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, resources, data curation, Writing - original draft, Writing - review & editing, Visualization, Supervision, Project administration.

Open access
Energy, Environment, Economic Growth
Market Dynamics and Volatility
Original source
Dec 12, 2023·Financial Innovation
7 cites
Store of value or speculative investment? Market reaction to corporate announcements of cryptocurrency acquisition

André D. Gimenes, Jéfferson Augusto Colombo, Imran Yousaf

Abstract In this study, we analyze the stock market reaction to 35 events associated with 32 publicly traded companies from six countries that have announced cryptocurrency acquisitions, selling, or acceptance as a means of payment. Our analysis focuses on traditional firms whose core business is unrelated to blockchain or cryptocurrency. We find that the aggregate market reaction around these events is slightly positive but statistically insignificant for most event windows. However, when we perform heterogeneity analyses, we observe significant differences in market reaction between events with high (larger CARs) and low cryptocurrency exposure (lower CARs). Multivariate regressions show that the level of exposure to cryptocurrency ("skin in the game") is a critical factor underlying abnormal returns around the event. Further analyses reveal that economically meaningful acquisitions of BTC or ETH (relative to firm's total assets) drive the observed effect. Our findings have important implications for managers, investors, and analysts as they shed light on the relationship between cryptocurrency adoption and firm value.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Financial Markets and Investment Strategies
Original source
Dec 12, 2023·Stats
1 cites
Jump-Robust Realized-GARCH-MIDAS-X Estimators for Bitcoin and Ethereum Volatility Indices

Julien Chevallier, Bilel Sanhaji

In this paper, we conducted an empirical investigation of the realized volatility of cryptocurrencies using an econometric approach. This work’s two main characteristics are: (i) the realized volatility to be forecast filters jumps, and (ii) the benefit of using various historical/implied volatility indices from brokers as exogenous variables was explicitly considered. We feature a jump-robust extension of the REGARCH-MIDAS-X model incorporating realized beta GARCH processes and MIDAS filters with monthly, daily, and hourly components. First, we estimated six jump-robust estimators of realized volatility for Bitcoin and Ethereum that were retained as the dependent variable. Second, we inserted ten Bitcoin and Ethereum volatility indices gathered from various exchanges as an exogenous variable, each at a time. Third, we explored their forecasting ability based on the MSE and QLIKE statistics. Our sample spanned the period from May 2018 to January 2023. The main result featured the best predictors among the volatility indices for Bitcoin and Ethereum derived from 30-day implied volatility. The significance of the findings could mostly be attributable to the ability of our new model to incorporate financial and technological variables directly into the specification of the Bitcoin and Ethereum volatility dynamics.

Open access
Financial Risk and Volatility Modeling
Market Dynamics and Volatility
Complex Systems and Time Series Analysis
Original source
Dec 9, 2023·AIMS Mathematics
4 cites
Dynamic correlations between Bitcoin, carbon emission, oil and gold markets: New implications for portfolio management

Kuo‐Shing Chen, Wei-Chen Ong

<abstract> <p>In this paper, we aim to uncover the dynamic spillover effects of Bitcoin environmental attention (EBEA) on major asset classes: Carbon emission, crude oil and gold futures, and analyze whether the integration of Bitcoin into portfolio allocation performance. In this study, we document the properties of futures assets and empirically investigate their dynamic correlation between Bitcoin, carbon emission, oil and gold futures. Overall, it is evident that the volatility of Bitcoin, as well as other prominent returns, exhibit an asymmetric response to good and bad news. Additionally, we evaluate the hedge potential benefits of these emerging futures assets for market participants. The evidence supports the idea that the leading cryptocurrency-Bitcoin can be a suitable hedge instrument after the COVID-19 pandemic outbreak. More importantly, our analysis of the portfolio's performance shows that carbon emission futures are diversification benefit products in most of the considered cases. Notably, incorporating carbon futures into portfolios may attract new investors to carbon markets for double goals of risk diversification. These findings also provide insightful evidence to investors, crypto traders, and portfolio managers in terms of hedging strategy, diversification and risk aversion <sup>[<xref ref-type="bibr" rid="b19">19</xref>,<xref ref-type="bibr" rid="b20">20</xref>,<xref ref-type="bibr" rid="b21">21</xref>,<xref ref-type="bibr" rid="b22">22</xref>,<xref ref-type="bibr" rid="b23">23</xref>,<xref ref-type="bibr" rid="b24">24</xref>,<xref ref-type="bibr" rid="b25">25</xref>]</sup>.</p> </abstract>

Open access
Market Dynamics and Volatility
Blockchain Technology Applications and Security
Energy, Environment, Economic Growth
Original source
Dec 9, 2023·Finance research letters
17 cites
Bitcoin attention and economic policy uncertainty

Belén Gill de Albornoz Noguer, Juan Ángel Lafuente, Mercedes Monfort, Javier Ordóñez

This paper explores the role of Economic Policy Uncertainty (EPU) as driver of the Bitcoin public attention. Using Google trends data from January 2010 to November 2021 in a set of 22 countries, a Principal Components Analysis reveals a strong unique commonality on the internet searching patterns for Bitcoin across countries, which suggests that the potential explaining factors of the Bitcoin attention should be global instead of local. The multivariate analysis corroborates this hypothesis since EPU at the country level does not play a significant role in explaining the searching patterns on Google for Bitcoin, while the global EPU does.

Open access
Market Dynamics and Volatility
Blockchain Technology Applications and Security
Energy, Environment, Economic Growth
Original source
Dec 8, 2023·Akademik Yaklaşımlar Dergisi
4 cites
ARE GREEN CRYPTOCURRENCIES SAFE? INVESTIGATION OF THE GREEN AND NON-GREEN CRYPTOCURRENCIES

Metin KILIÇ, İnci Merve ALTAN

Cryptocurrencies, which started with Bitcoin, which was released differently from traditional payment and investment tools, have large transaction volumes today. In addition to the many economic benefits of cryptocurrencies, which are used both as a payment tool and as a financial investment tool, high energy consumption and a heavy carbon footprint come with them. With the owner of the automaker Tesla stating that he is worried about the increasing use of fossil fuels in Bitcoin mining and cutting its support for Bitcoin, the price of Bitcoin has fallen sharply, while green cryptocurrencies have reached historical peaks. This situation reminded the investors that they should handle risky investments carefully and also highlighted the importance of green investment tools. Understanding the relationship between green cryptocurrencies and other assets is essential for investors looking to expand their portfolios and seize emerging opportunities. In this direction, the study examined whether green cryptocurrencies are a safe haven against non-green cryptocurrencies in the period of January 2022–July 2023. In the analysis, DCC-GARCH analysis, risk, and return analyses were performed for safe haven. According to the analysis' findings, among cryptocurrencies, green cryptocurrencies are most likely to be a safe haven for investors.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Energy, Environment, Economic Growth
Original source
Dec 6, 2023·Balıkesir Üniversitesi Sosyal Bilimler Enstitüsü Dergisi
0 cites
Altın ve kripto para piyasaları arasındaki ilişkilerin doğrusal olmayan modeller ile incelenmesi: Bitcoin ve Ethereum örneği

Hilmi Tunahan AKKUŞ

Bu çalışmada altın ile kripto paralar arasındaki ilişkiler doğrusal olmayan modeller ile kapsamlı olarak araştırılmaktadır. Kripto paraları temsilen dijital altın olarak da adlandırılan en büyük kripto para Bitcoin ve en büyük akıllı kontrat platformu Ethereum çalışmada birlikte ele alınmaktadır. Hepsağ (2021) doğrusal olmayan eşbütünleşme testi bulgularına göre, ilgili değişkenler arasında çok zayıf düzeyde uzun dönemli ilişki, doğrusal olmayan Granger nedensellik testi sonuçlarına göre ise iki yönlü nedensellik ilişkisi tespit edilmiştir. Son olarak düzeltilmiş dinamik koşullu korelasyon (cDCC-GARCH) sonuçlarına göre altın ve kripto paralar arasında genellikle pozitif ve sıfıra yakın korelasyon bulunduğu, ancak COVID-19 salgınının görüldüğü 2020 yılı boyunca değişkenler arasındaki korelasyon ilişkisinin daha da arttığı belirlenmiştir. Elde edilen bulgular yatırımcılar için portföy çeşitlendirmesi, risk yönetimi ve piyasa öngörüsü açısından önemli bilgiler sunmaktadır.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Complex Systems and Time Series Analysis
Original source
Dec 6, 2023·Risks
16 cites
Performance of the Realized-GARCH Model against Other GARCH Types in Predicting Cryptocurrency Volatility

R. Queiroz, Sérgio Adriani David

Cryptocurrencies have increasingly attracted the attention of several players interested in crypto assets. Their rapid growth and dynamic nature require robust methods for modeling their volatility. The Generalized Auto Regressive Conditional Heteroskedasticity (GARCH) model is a well-known mathematical tool for predicting volatility. Nonetheless, the Realized-GARCH model has been particularly under-explored in the literature involving cryptocurrency volatility. This study emphasizes an investigation on the performance of the Realized-GARCH against a range of GARCH-based models to predict the volatility of five prominent cryptocurrency assets. Our analyses have been performed in both in-sample and out-of-sample cases. The results indicate that while distinct GARCH models can produce satisfactory in-sample fits, the Realized-GARCH model outperforms its counterparts in out of-sample forecasting. This paper contributes to the existing literature, since it better reveals the predictability performance of Realized-GARCH model when compared to other GARCH-types analyzed when an out-of-sample case is considered.

Open access
2 source records
Financial Risk and Volatility Modeling
Market Dynamics and Volatility
Complex Systems and Time Series Analysis
Original source
Dec 5, 2023·European Journal of Government and Economics
3 cites
Has COVID-19 changed the correlation between cryptocurrencies and stock markets?

Inès Abdelkafi, Youssra Ben Romdhane, Sahar Loukil

The COVID-19 pandemic has challenged the notion that cryptocurrencies are uncorrelated with traditional asset markets. This study uses VAR-OLS techniques to investigate the time-varying correlation between Bitcoin and three major European stock market indices from January 4, 2016, to February 26, 2021. Our results show that cryptocurrencies and stock markets are dependent during crisis periods, but not during non-crisis periods. This confirms the time-varying correlation between cryptocurrencies and stock markets, which depends on the extent and persistence of responses to own and cross shocks. To improve the robustness of our results, we also test the impact of government measures on Bitcoin and stock market indices and find that they are both affected by these measures. Our study adds to the literature by examining the impacts of pandemics on the correlations between Bitcoin returns and the stock market, oil, and gold index returns, which have so far been unaddressed.

Open access
Blockchain Technology Applications and Security
Market Dynamics and Volatility
COVID-19 Pandemic Impacts
Original source
Dec 5, 2023·Preprints.org
3 cites
Factors Affecting the Volatility of Bitcoin Prices

Renhong Wu, Md. Alamgir Hossain, H Zhang

To explore the impact of factors from the traditional financial market, such as economic policy uncertainty, oil prices, the NASDAQ index, and gold prices, to identify factors contributing to Bitcoin volatility. This study uses traditional OLS (ordinary least squares) regression analysis to examine how different external factors affect Bitcoin price volatility from January 2014 to March 2023. By employing a comprehensive approach to recognize the distinctive characteristics of the Bitcoin market, namely, 24-hour trading and the short duration of its existence, we’ve included a wide spectrum of data to ensure a cohesive comparison with other financial datasets. The findings of the statistical analysis indicate that EPU and the NASDAQ index promote positive fluctuations in Bitcoin volatility, whereas gold prices act as a dampener. Conversely, we do not find empirical support for the influence of energy prices, such as oil, on Bitcoin volatility. These findings indicate that we should not undervalue Bitcoin in any financial transaction scenario. It means that all stakeholders should treat the issue of Bitcoin volatility more seriously, even including governments, who should actively regulate the Bitcoin market, and investors, who should recognize the dangers of this volatility, make rational decisions based on individual circumstances, and employ flexible trading strategies.

Open access
2 source records
Blockchain Technology Applications and Security
Market Dynamics and Volatility
Financial Markets and Investment Strategies
Original source
Dec 4, 2023·Journal of Operational and Strategic Analytics
10 cites
Interplay of Cryptocurrencies with Financial and Social Media Indicators: An Entropy-Weighted Neural-MADM Approach

Jéfferson Augusto Colombo, Tanzina Akhter, Peter Wänke, Md. Abul Kalam Azad · 7 authors

In the rapidly evolving domain of digital finance, the interplay between cryptocurrencies and external variables such as financial and social media indicators warrants thorough examination. This investigation employs a novel, entropy-weighted Multiple Attribute Decision Making (MADM) model to decipher these intricate relationships. The study's foundation is an expansive dataset, meticulously compiled to encompass a broad spectrum of financial data alongside diverse social media indicators. Central to this analysis is the employment of the Stepwise Weight Assessment Ratio Analysis (SWARA) method, meticulously applied to ascertain the relative importance of various social media indicators. Complementing this, the Complex Proportional Assessment (COPRAS) methodology is adeptly utilized to derive utility functions for each cryptocurrency under scrutiny. The analytical prowess of neural network regressions is harnessed to delineate the influence exerted by a multitude of financial indicators on these utility functions. The findings of this research are pivotal in understanding the dynamics within the cryptocurrency market. Bitcoin and Ripple emerge as pivotal entities, primarily functioning as primary conduits for market shocks. In contrast, Ethereum is identified as a stabilizing force, predominantly absorbing such fluctuations. A nuanced aspect of this study is the differential impact of social media indicators on various cryptocurrencies. Bitcoin and Ethereum display a negative correlation with these indicators, suggesting a complex, possibly inverse relationship with social media dynamics. Conversely, Litecoin, Dogecoin, and Ripple exhibit a positive responsiveness, indicating a heightened susceptibility to social media attention, sentiment, and prevailing uncertainty.

Open access
Blockchain Technology Applications and Security
Complex Systems and Time Series Analysis
Market Dynamics and Volatility
Original source