What is a Bitcoin ETF? Spot, futures, and income ETFs explained

This educational article explains what a Bitcoin ETF is and why spot Bitcoin ETFs became a major bridge between crypto and traditional finance. It highlights that spot ETFs hold actual Bitcoin and track the asset closely, while futures ETFs rely on rolling contracts that can create performance drag, and income/covered-call ETFs trade upside for yield. The piece emphasizes the accessibility benefits of ETFs through ordinary brokerage accounts, plus professional custody and easier institutional adoption. It also notes the tradeoffs: annual fees, imperfect tracking, inability to self-custody or use Bitcoin directly, and market-hours-only trading. The article frames spot Bitcoin ETFs as the cleanest way to get price exposure, while direct Bitcoin ownership remains better for users who want the asset itself and all its network utility.