as we know so many reason to make controversial bit coin currency in practical or real media sanitation. if we observe very carefully few past few years we have seen that criminal activities or occurrence are occurred by the help of hackers and trader make it famous moving thousand of dollars outside by cheating with government law enforcement for that reason value of bitcoin increasing very high. even they make money away from center bank and government unable to hold money from general people and through this process people convert this money into different things. i think this is enough for making controversial and what do you think about my think ?
In money laundering, drug trafficking, and terrorist crimes, criminals use the anonymity and high mobility of bitcoin to hide the flow of funds, which is the same as the effect of using cash. In fact, it's only a tiny fraction of bitcoin, and the most popular one is the dollar.
Compared with the dark side of these a few, the currency is more and more get the welcome of broad, Germany, Japan and other countries has been approved by the legal status of the currency, some states in the United States are currently trying to currency legislation.