Follow blockchain research across journals, conferences, and preprint repositories.
1,518 results · page 45 of 64
Artur Rot, Małgorzata Sobińska, Marcin Hernes, Bogdan Franczyk
No abstract is available for this record.
Stéphane Goutte, Benjamin Keddad
No abstract is available for this record.
G. V. Mahesh Nath
No abstract is available for this record.
Tobias Burggraf
No abstract is available for this record.
Alexandra Yuryevna Bokovnya, А. A. Shutova, Tatyana Gennadievna Zhukova, Liliya Viktorovna Ryabova
Cryptocurrency crime cases continue to increase. The legal nature of cryptocurrency is analyzed, and it is concluded that nowadays, despite of some attempts to regulate cryptocurrency circulation legislatively, there are numerous gaps, most of which are in the field of criminal law. Based on the study of the available theoretical views of domestic, as well as the analysis of the judicial investigative practice materials of the legal sphere under consideration, the authors consider the necessity to carry out a work to formulate several areas that will streamline the criminal law relations in the field of cryptocurrency circulation.
G. V. Mahesh Nath
The largest and best-known Cryptocurrency in the global economy is Bitcoin but it is only one of approximately 2,000 cyptocurrencies in circulation today. A Bitcoin was worth 8,790.51 U.S. dollars as of March 4, 2020 and all the Bitcoins in the world were worth roughly $160.4 billion. In Bitcoin you don’t need to explicitly register or reveal your real world identity, but the pattern of your behavior might itself be identifying. This is the fundamental privacy question in a Cryptocurrency like Bitcoin leading to emergence of Privacy coins such a Monero and Zcash that utilize complex cryptography to achieve the greater Privacy levels with more anonymity features. However, in the zest for increased Privacy with focus on anonymity in Cryptocurrency transaction, the law and order issues are compromised wherein it would be near to impossible for the law enforcement agencies to track criminals dealing in money laundering, terrorist financing, tax evasion and other frauds by using Crypto currencies. In this background, it is necessary to understand “Cryptocurrency and Privacy” as an interface to better comprehends the subject of Cyptocurrency which is very dynamic in technology with multiple global implications on the economic and legal front. The present work aims to study Cryptocurrency in the context of Privacy. The foundational concepts and definitions of the two competing subjects: ‘Cryptocurrency and Privacy’ is taken up for better understanding the background of the interface. Tor, an anonymous communication network is referred in brief to state that the dilemma in the Privacy context is not unique to use of Crypto currencies technology in so far its negative effects are concerned . The conclusion suggest for finding an appropriate balance between an individual’s privacy and State’s security in Cryptocurrency technology.
Guglielmo Maria Caporale, Woo-Young Kang
This paper analyses co-movement between Bitcoin exchanges in 34 major countries around the world and the US (the global benchmark) over the period January 24, 2011 - January 7, 2019. More specifically, we run IV regressions to investigate the importance of cultural factors (such as tightness, individualism, trust and risk-taking) following an earlier study by Eun et al. (2015) which had shed light on their importance to explain stock co-movement within individual countries. The results suggest that markets in tighter, more individualistic, trustful and risk-taking societies are more tightly linked to the US one. Further, it appears that culturally looser, collectivistic, trustful and risk-taking countries are more likely to shut down their Bitcoin exchanges compared to other countries. These findings confirm our priors.
Dan Amiram, Bjørn Jorgensen, Daniel Rabetti
No abstract is available for this record.
Nikita Singhal, Mohit Sharma, Sandeep Singh Samant, Prajwal Goswami · 5 authors
No abstract is available for this record.
Dennis Eijkel, Ansgar Fehnker
No abstract is available for this record.
Francesco Scicchitano, Angelica Liguori, Massimo Guarascio, Ettore Ritacco · 5 authors
No abstract is available for this record.
Emily Fletcher, Charles Larkin, Shaen Corbet
No abstract is available for this record.
Samuel Agbesi, Fati Tahiru
The administration of lands in Ghana has been a major issue in the past years that has resulted in parties seeking arbitration to determine the rightful owners and others resulting in death because of the land-guard menace. The main issues in land administration in Ghana include modification and falsification of land records, difficulty in authenticating the ownership of land property, sales of land property to more than one customer, and lack of transparency in land transactions. This chapter examines the application of Blockchain in land administration in Ghana to solve the issues of unauthorized modification of land records, difficulties in proven ownership of land properties, and the lack of transparency in land transactions. The proposed solution is based on Ethereum Blockchain technology using a smart contract. The solution used a non-fungible token to represent land properties as a digital asset that can be traded on the proposed solution. The proposed solution provides integrity, immutability, provenance, and transparency in land administration.
Messaoud Chibane, Nathalie Janson
No abstract is available for this record.
Bank for International Settlements, Raphael Auer, Stijn Claessens, Bank for International Settlements
Cryptocurrencies are often thought to operate out of the reach of national regulation, but in fact their valuations, transaction volumes and user bases react substantially to news about regulatory actions. The impact depends on the specific regulatory category to which the news relates: events related to general bans on cryptocurrencies or to their treatment under securities law have the greatest adverse effect, followed by news on combating money laundering and the financing of terrorism, and on restricting the interoperability of cryptocurrencies with regulated markets. News pointing to the establishment of specific legal frameworks tailored to cryptocurrencies and initial coin offerings coincides with strong market gains. These results suggest that cryptocurrency markets rely on regulated financial institutions to operate and that these markets are segmented across jurisdictions.
Razana Juhaida Johari, Norareena Binti Zul, Norli Abd Talib, Sayed Alwee Hussnie Sayed Hussin
No abstract is available for this record.
Ismael Sanz Arribas, David Arroyo, Denisa Kera
No abstract is available for this record.
Naoki Hiramoto, Yoichi Tsuchiya
No abstract is available for this record.
Rodney Garratt, Maarten R.C. van Oordt
We assess how the cost structure of cryptocurrency mining affects the response of miners to exchange rate fluctuations and the immutability of cryptocurrency ledgers that rely on proof-of-work. We show that the amount of mining power supplied to currencies that rely on specialized hardware, such as Bitcoin, responds less to adverse exchange rate shocks than other currencies respond to such shocks, a fact that is instrumental to avoiding double-spending attacks. The results may change if mining equipment used for one cryptocurrency can be transferred to another. For smaller currencies with low exchange rate correlation, transferability eliminates the protection that fixed costs provide. Our results weaken doomsday predictions for Bitcoin and other cryptocurrencies with declining block rewards. This paper was accepted by Bruno Biais, Special Section of Management Science: Blockchains and Crypto Economics. Supplemental Material: The data files are available at https://doi.org/10.1287/mnsc.2023.4901 .
Xiaoqi Li, Ting Chen, Xiapu Luo, Jiangshan Yu
Being the most popular permissionless blockchain that supports smart contracts, Ethereum allows any user to create accounts on it. However, not all accounts matter. For example, the accounts due to attacks can be removed. In this paper, we conduct the first investigation on erasable accounts that can be removed to save system resources and even users' money (i.e., ETH or gas). In particular, we propose and develop a novel tool named GLASER, which analyzes the State DataBase of Ethereum to discover five kinds of erasable accounts. The experimental results show that GLASER can accurately reveal 508,482 erasable accounts and these accounts lead to users wasting more than 106 million dollars. GLASER can help stop further economic loss caused by these detected accounts. Moreover, GLASER characterizes the attacks/behaviors related to detected erasable accounts through graph analysis.
Yang Li, Yue Cai, Hao Tian, Gengsheng Xue · 5 authors
No abstract is available for this record.
Elie Bouri, Rangan Gupta, Xuan Vinh Vo
Are price discontinuities in cryptocurrencies jointly related to large swings in geopolitical risk? This is a relevant question to answer given recent news from the press that Bitcoin’s price jumps are driven by jumps in the level of geopolitical risk index. To answer this question, we examine first the jump incidence of daily returns for Bitcoin and other leading cryptocurrencies and then study the co-jumps between cryptocurrencies and the geopolitical risk index using logistic regressions. Our dataset is at the daily frequency and covers the period 30 April 2013 to 31 October 2019. The results show that the price behaviour of all cryptocurrencies under study is jumpy but only Bitcoin jumps are dependent on jumps in the geopolitical risk index. This revealed evidence of significant co-jumps for the case of Bitcoin only nicely complements previous studies arguing that Bitcoin is a hedge against geopolitical risk.
Brian D. Feinstein, Kevin Werbach
ABSTRACT The meteoric growth of global cryptocurrency markets presents novel challenges to regulators. Some policymakers and scholars warn that regulation will cause trading activity to cross borders into less-regulated jurisdictions—or even smother a promising new financial asset class. Others believe regulatory actions will stimulate activity by providing clarity to market participants. Standing behind this disagreement is a debate about the desirability of either outcome. Some believe that governments should promote development of the cryptocurrency sector within their countries, while others view cryptocurrencies as conduits of illegality and fraud that should be restricted through strict regulation or even outright bans. Yet these debates have, to date, been conducted almost entirely without data concerning the effects of regulation on market activity. As a corrective, in this article we assembled original data on cryptocurrency regulations worldwide and used them to empirically examine movement in trading activity at a number of exchanges following key regulatory announcements. We found that a wide variety of models yielded almost entirely null results. From the creation of bespoke licensing regimes to targeted anti-money-laundering and anti-fraud enforcement actions, as well as many other categories of government activities, we found no systemic evidence that regulatory measures cause traders to flee, or enter into, the affected jurisdictions. These findings at last provide an empirical basis for regulatory decisions concerning cryptocurrency trading. Among other things, they call into question that capital flight or chilling effects should be a first-order concern.
Friedhelm Victor
No abstract is available for this record.