https://www.123articleonline.com/rss/author/264453/anthony-martinArticles written by Anthony Martin from 123ArticleOnline.comen-usCopyright (c) 123ArticleOnline.com All rights reserved. https://www.123articleonline.com/articles/1158775/bitcoins-in-belgium Virtual currencies schemes with bidirectional flow: these are virtual currencies that users can buy and sell according to an exchange rate with fiat currency, and that can be used to purchase physical goods and services. The most notable example of bidirectional virtual currencies are cryptocurrencies, which form the main subject of this chapter considering their increasing influence and controversy in today's economy.