Traders can lengthy bitcoin by buying perpetual swaps and promoting them a while sooner or later for income. For instance, Alice buys 2 BTC/USD perpetual swaps by depositing $80,000 as collateral. As such, every BTC/USD perpetual swap is value $40,000. Assuming the worth of bitcoin rises steadily to $50,000 the next month, and Alice decides to shut her place, she would have generated a $10,000 revenue on every perpetual swap bought. Her whole revenue could be roughly $20,000.