Abstract: The rapid development of information technology has made generating cryptocurrencies and fast, cheap and uncontrollable transactions using virtual space possible. Among virtual currencies, Bitcoin is considered to be a major challenge for traditional financial operations, and especially for the fight against money laundering and terrorist financing. This article presents the following points of discussion: the spectacular appearance of Bitcoin, its exponential evolution, its

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... , its growing demand, lack of anonymity and predictability, the cross-border nature of transactions. Keywords: Blockchain, Ledger Technology, Bitcoin, ETH, cryptocurrency, cryptography, technology, digital JEL Classification : C23, C26, C38, C55, C81, C87