How do spot ETFs hold their underlying crypto assets?

Spot ETFs hold actual cryptocurrency assets in secure custodian accounts, not derivatives. When you buy a Bitcoin spot ETF, the fund purchases real Bitcoin and stores it in institutional-grade vaults or with qualified custodians. These custodians are regulated financial institutions that safeguard the crypto. The ETF's value tracks the actual price of the underlying asset. For example, if a Bitcoin spot ETF holds 10,000 BTC, those coins exist in secure storage. This differs from futures-based ETFs, which use contracts predicting future prices instead. Spot ETFs offer direct exposure to the actual cryptocurrency without managing a personal wallet, making them attractive for traditional investors who want regulatory oversight and insurance protections.