Money laundering can definitely be carried out through bitcoin, however, there are better cryptocurrencies out there that are designed for maximized anonymity. With bitcoin, everyone is able to see transactions that occur on the network and can monitor the flow of funds. However, the person behind the bitcoin address remains anonymous until they want to cash out their bitcoin which will then cause them to be easily identified especially through the use of services such as local bitcoins. In fact, mixer services such as chipmixer may get subpoenaed by law enforcement services which would result in the identification of fund locations. This is why bitcoin is one of the less popular cryptocurrencies used in laundering money.