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Cryptocurrency is a digital currency spread in peer-to-peer network all over the world. This network has a big accounting book called Blockchain which can be accessed by public. This article is doctrinal legal research with conceptual research. This article reviews digital money based on Jalbu Masalah wa Dar al-Mafasid accompanied by the implication of Saddu az-Zari’ah. The results show that Islamic law acknowledges the currency issued by the government. The existence of a country is a form of protection to the money owners from the acts of fraud in finance. Bitcoin and digital money are not included in the criteria mentioned in Islamic economy law because of it contains obscurity (jahalah), high speculation element, and can harm individual as well as the country. Bitcoin has no clear source, authentic balance, and it only has moral assurance.