This working paper presents a simple model for the macroeconomic behavior of bitcoin based on the economic equation of exchange. According to this model, the value of bitcoin is determined largely by the willingness of bitcoin holders to save bitcoin and not by its transactional use. This model therefore predicts that increased use of bitcoin will not cause its value to rise, but that the value...

Bitcoin has become an increasingly popular cryptocurrency because of the anonymity it offers. Any transaction between two bitcoin users is stored in a public ledger (called blockchain). While there has been analysis of various Bitcoin networks [RS12, FKP14, OKH13], most of the papers consider only unsigned Bitcoin networks and only do basic analysis of the transaction graph, such as amount of b...

Bitcoin is quickly emerging as a popular digital payment system. However, in spite of its reliance on pseudonyms, Bitcoin raises a number of privacy concerns due to the fact that all of the transactions that take place are publicly announced in the system. In this paper, we investigate the privacy provisions in Bitcoin when it is used as a primary currency to support the daily transactions of i...

The purpose of research is focused on the insight into the future of Bitcoin on the financial situation, its implications and challenges. The problem of study is to investigate how to deal with a new type of digital currencies (such Bitcoin) that does not have a physical presence and there is no specific body to issue. Thus, this study aims to identify the nature of Bitcoin currency and what ar...

Bitcoin is a decentralized payment system that is based on Proof-of-Work. Bitcoin is currently gaining popularity as a digital currency; several businesses are starting to accept Bitcoin transactions. An example case of the growing use of Bitcoin was recently reported in the media; here, Bitcoins were used as a form of fast payment in a local fast-food restaurant. In this paper, we analyze the ...

Bitcoin is an online currency that is used worldwide to make online payments. It has consequently become an investment vehicle in itself and is traded in a way similar to other open currencies. The ability to predict the price fluctuation of Bitcoin would therefore facilitate future investment and payment decisions. In order to predict the price fluctuation of Bitcoin, we analyse the comments p...

Bitcoin is gaining increasing popularity nowadays, even though the crypto-currencies field has plenty of digital currencies that have emerged before the adoption of Bitcoin idea. Bitcoin is a decentralized digital currency which relies on set of miners to maintain a distributed public ledger and peer-to-peer network to broadcast transactions. In this paper, we analyse how transaction validation...

Bitcoin is the world’s leading cryptocurrency, allowing users to make transactions securely and anonymously over the Internet. In recent years, The Bitcoin the ecosystem has gained the attention of consumers, businesses, investors and speculators alike. While there has been significant research done to analyze the network topology of the Bitcoin network, limited research has been performed to a...

Bitcoin is a popular “cryptocurrency” that records all transactions in an distributed append-only public ledger called “blockchain”. The security of Bitcoin heavily relies on the incentive-compatible distributed consensus protocol which is run by participants called “miners”. In exchange of the incentive, the miners are expected to honestly maintain the blockchain. Since its launch in 2009, Bit...