نتایج جستجو برای: cryptocurrency

تعداد نتایج: 2254  

2015
Yingjie Zhao Heiko Niedermayer

In this paper, we concern ourselves with cryptocurrency and how cryptocurrency affects the cryptocurrency market as well as the fiat currency market. The whole topic will be sepreted into two sections: competition among different currencies, as well as competition among exchanges[2]. We aim at figuring out the current circumstance of cryptocurrency which as a casual visitor in the market, and a...

Journal: :CoRR 2018
Jun Aoyagi Daisuke Adachi

We propose a theoretical model to measure the fundamental values of cryptocurrency and blockchain technology. Due to its secure nature, blockchain allows the transactions to be state-contingent based on highly credible state information. In an economy with adverse selection, traders have an incentive to buy assets with unknown quality by using cryptocurrency to exploit the higher security of bl...

2017
Jonathan Chiu Thorsten Koeppl

A general equilibrium monetary model is developed to study the optimal design of a cryptocurrency system based on a blockchain. The model is then calibrated to Bitcoin transaction data to perform a quantitative assessment of the scheme. We formalize the critical elements of a cryptocurrency: the blockchain to keep a history of transactions, the distributed updating of information and consensus ...

2017
Svetlana Sapuric Angelika Kokkinaki Ifigenia Georgiou

This study provides a comparative financial and statistical analysis between the largest and most traded cryptocurrencies. In particular, the exchange rates of Bitcoin, Litecoin, Ripple and Ethereum were collected from August 2010 until May 2017. The raw annualized volatility of cryptocurrencies is compared as well as to fiat currencies and major exchange rates. The results show that Bitcoin is...

2014
Xiaochao Qian

There are some alternative Cryptocurrency systems which claim that they are based on PoS are actually based on PoSTW which denotes the Proof of Stake(coin), Time(day) and Work(hashing), while the other pure PoS Cryptocurrency systems are actually centralized. In this paper we propose a new framework of Cryptocurrency system. The major parts what we have changed include, a fast transparent distr...

2014
Joseph Bonneau Andrew Miller

We present, Fawkescoin, a simple cryptocurrency using no public-key cryptography. Our proposal utilizes the distributed consensus mechanism of Bitcoin but for transactions replaces Bitcoin’s ECDSA signatures with hash-based Guy Fawkes signatures. While this introduces a number of complexities, it demonstrates that a distributed cryptocurrency is in fact possible with only symmetric cryptographi...

Journal: :IACR Cryptology ePrint Archive 2017
Iddo Bentov Yan Ji Fan Zhang Yunqi Li Xueyuan Zhao Lorenz Breidenbach Philip Daian Ari Juels

We propose Tesseract, a secure real-time cryptocurrency exchange service. Centralized exchange designs are vulnerable to theft of funds, while decentralized exchanges cannot offer real-time cross-chain trades. All the existing exchanges are also vulnerable frontrunning attacks. Tesseract overcomes these flaws by using a trusted execution environment, specifically Intel SGX. The task of committi...

Journal: :IACR Cryptology ePrint Archive 2017
Sanjay Bhattacherjee Palash Sarkar

This work shows that weighted majority voting games occur in cryptocurrencies. In particular, two such games are highlighted. The first game, which we call the Rule Game, pertains to the scenario where the entities in the system engage in a voting procedure to accept or reject a change of rules. The second game, which we call the Attack Game, refers to the scenario where a group of entities in ...

2018
Jan Lansky

Cryptocurrencies are a type of digital currencies that are relying on cryptographic proofs for confirmation of transactions. Cryptocurrencies usually achieve a unique combination of three features: ensuring limited anonymity, independence from central authority and double spending attack protection. No other group of currencies, including fiat currencies, has this combination of features. We wi...

2017
Jason Teutsch Christian Reitwießner

Bitcoin and Ethereum, whose miners arguably collectively comprise the most powerful computational resource in the history of mankind, offer no more power for processing and verifying transactions than a typical smart phone. The system described herein bypasses this bottleneck and brings scalable computation to Ethereum. Our new system consists of a financial incentive layer atop a dispute resol...

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