Grayscale Bitcoin Trust (GBTC) tracks bitcoin with a huge tracking error. Often GBTC used to trade at a 15% to 30% premium to the price of Bitcoin and now it is trading at a discount to BTC price. If you are wondering if GBTC stock is a good buy; the answer is no. 1) You have a tracking error with the price of Bitcoin. 2) You do not actually own the underlying Bitcoin because you do not have the keys to it. "Not your keys, not your coins" is something you should always remember. You cannot transfer the Bitcoin to your personal wallet. 3) There are better option if you want to buy crypto in your IRA using a crypto dedicated platform like AltoIRA which works seamlessly with Coinbase and takes care of all the paperwork.