Bitcoin exchange-traded funds (ETFs) do not give you the option to withdraw Bitcoin while crypto exchanges do, in addition to the limited ability to use ETFs for retail traders compared to those who can use crypto exchanges.
Major cryptocurrency exchanges like Binance, Bitget and OKX which have high proof of reserves are seeing the dollar value of their reserves increase as the price of Bitcoin rises. These exchanges publish periodic proof of reserves to provide transparency to users that they hold sufficient cryptocurrency reserves to cover user balances. As the value of their Bitcoin reserves increases, the dollar value of their proof of reserves also rises.
Again Bitget, I hope you stop mentioning them in most of your posts, people will start ignoring you.