Currently, FBS offers Bitcoin on both MT4 and MT5 trading platform. (September 2017)
*The list of Cryptocurrencies available with FBS may be expanded in the future.
The symbol of Bitcoin is BTCUSD, which is Bitcoin against USD.
BTCUSD on FBS MT4 and MT5 is available for trading 24/7 non-stop. The market feed is directly provided from its liquidity provider.
If you wish to trade BTCUSD, you may just open a trading account with FBS as normal. Then the symbol should be available for trading automatically on the platform.