Anyway?
BitCoin is falling at embrassing rate and anyone would know it still fall, Leaving the room for speculator to make profit from short selling
Easy, just use the sell option
just short it
Bitcoin[a] (₿) is a cryptocurrency. It is a decentralized digital currency without a central bank or single administrator that can be sent from user to user on the peer-to-peer bitcoin network without the need for intermediaries.