Your messages have been more helpful than anyone I've tried talking to about this from Vanguard, GBTC, or TurboTax.
I think I understand what I need to do, but I'm still a bit confused as, like you, I purchased my GBTC a long time ago (2016/2017) and have sold some since then (nothing in the last year though). So I think I need to go back to the filings from those years and get my original Bitcoin per share from those dates?
Then I use that Bitcoin per share (after subtracting out my sales and incorporating the 91:1 stock split) in your formula for each "Sale" listed on my 1099 to get the cost basis for each. Then I use the cost basis for each to figure out a gain/loss for each and sum those as 1 total transaction for the entire year? Does that sound correct?
Thanks again, random guy from the internet.
