By Paul R. La Monica, CNN BusinessCrypto brokerage Coinbase has been hit hard by the meltdown in bitcoin prices this year. The stock has plunged 65% so far in 2023. And the company’s latest earnings, due out after the closing bell Tuesday, are likely to be miserable.Wall Street is forecasting a more than 50% drop in revenue from a year ago and expects that Coinbase will report a loss of about $585 million. The company posted a $1.6 billion profit in the second quarter of 2021.Still, some investors are hopeful the worst may soon be over.