What are the tax brackets for bitcoin ETF gains?

Excuse me, could you please clarify the tax implications for gains made on investments in Bitcoin ETFs? Specifically, I'm interested in knowing what the different tax brackets are for such gains, and if there are any special considerations or exemptions that apply specifically to this type of investment. I understand that the tax treatment can vary based on factors such as holding period and income level, so I'm seeking a general understanding of how these might impact the taxation of Bitcoin ETF gains.