Thinking of jumping into this.
So, buy bitcoin on exchange - Coinbase or other?
Move bitcoin from Coinbase to wallet - blockchain.com or other?
Move bitcoin from wallet to book.
So, let's say you start with $1K of USD, after fees, how much will you have in the book?
Also, at what point in this process do you have exposure to bitcoin pricing? It seems like you have it at all points, even though not directly at your book, but when you go to withdraw, you may have lost or gained value, because you have to get USD back into bitcoin, which could have moved.