The decision could stall Turkey's crypto market, which has gained momentum in recent months as investors joined the global rally in bitcoin, seeking to hedge against lira depreciation and inflation that topped 16% last month.
In a statement, the central bank said crypto assets were "neither subject to any regulation and supervision mechanisms nor a central regulatory authority", among other security risks.
The bill, one of the world’s strictest policies against cryptocurrencies, would criminalise possession, issuance, mining, trading and transferring crypto-assets, said the official, who has direct knowledge of the plan.