Blockchain can be looked at as a new channel for covert communication. Since blockchain provides a tamper-proof distributed ledger, it is possible to employ blockchain to provide persistent and anonymous covert communications. This persistence …

Cryptocurrencies have brought booming economic innovations in recent years, but they have also given rise to many intractable problems related to financial crimes, urgently requiring for some effective countermeasures. Transaction network analysis …

Bitcoin is the first and most commonly used digital cryptocurrency in the world. It is also used for electronic transaction though it does not exist physically like hard notes. For investors, it is now been regarded as an investment opportunity.

In recent years, the application of complex network techniques has seen substantial progress, driven by enhanced computational capabilities and their efficacy in diverse practical domains. Central to complex network models is the assessment of …

Der Begriff Blockchain stammt aus dem Englischen und bedeutet übersetzt Blockkette. Die Blöcke stehen dabei für einzelne Datensätze, die hintereinander abgespeichert werden, wodurch eine Art Datensatzkette entsteht. Vom Prinzip her ist die …

The Bitcoin protocol relies on scripts written in Script, a simple Turing-incomplete stack-based language, for locking the money carried over the Bitcoin network. This paper explores the usage of symbolic execution for finding transactions that …

The decentralized nature of Bitcoin allows for pseudonymous money exchange beyond authorities’ control, contributing to its popularity for diverse illegal activities such as scams, ransomware attacks, money laundering, and black markets. In this …

In the last decade, Bitcoin has transformed from an experimental asset into a global store of value, emerging as a viable alternative to traditional finance. This study explores Bitcoin adoption among merchants in Panajachel (Guatemala), El Zonte …

The world economy is experiencing the novel adoption of distributed currencies that are free from the control of central banks. Distributed currencies suffer from extreme volatility, and this can lead to catastrophic implications during future …

Secure lottery is a cryptographic protocol that allows multiple players to determine a winner from them uniformly at random, without any trusted third party. Bitcoin enables us to construct a secure lottery to guarantee further that the winner …

Blockchains suffer from scalability limitations, both in terms of latency and throughput. Various approaches to alleviate this have been proposed, most prominent of which are payment and state channels, sidechains, commit-chains, rollups, and …

Despite its unconventional origins, Bitcoin has emerged as the predominant cryptocurrency in the modern era and has entered mainstream discourse. Transactions in the Bitcoin ecosystem are different from those of ordinary finance, because of the …

This chapter discusses the fundamentals of Bitcoin, its history, and the predicted market for this cryptocurrency. It introduces the concept of Bitcoin wallets and describes their varieties and features, including custodial and noncustodial …

Bitcoin is currently the most well-known cryptocurrency, and its market is extremely volatile. The evolution of the financial system is influenced by the growing popularity and commercial acceptance of investors worldwide. Investments are at risk …

Bitcoin Core is the main (based on the original code of the creator of Bitcoin) Bitcoin client for connecting to the Bitcoin network. This is a full node client that requires the user to download a copy of the entire blockchain to their computer …

Recent studies have shown that compromising Bitcoin’s peer-to-peer network is an effective way to disrupt the Bitcoin service. While many attack vectors have been uncovered such as BGP hijacking in the network layer and eclipse attack in the …

Artificial Intelligence (AI) significantly improves time series forecasting in the financial market, yet it is challenging to establish reliable real-world finance applications due to a lack of transparency and explainability. This paper …