With the advancement of technology, industry and communication, in some transactions, traditional and virtual money has given its place to cryptocurrency. Since cryptocurrencies are new, the application of jurisprudence and Islamic law to them is faced with several problems. One of the issues that can be analyzed and pondered in this area is cryptocurrency mining. Under what reason does the borrower become the owner of the means of possession? This writing is written in a descriptive-analytical way and with a fiqh-oriented ijtihad method; It has come to the conclusion that on the basis that we consider the currency as an example of the free speech, we can analyze the operation of extracting the currency in the form of possession of the speech, therefore, the miner has taken possession of it due to the mining process and as a result, the owner it becomes In order to solve this problem that the existence of the property is a condition for the realization of possession, it has been answered that the actual existence of the property is not a condition for the realization and authenticity of the property, and on the other hand, the cryptocurrency in the process of extraction has other conditions of permissible ownership.