Disclaimerā¦ Iām not a tax professional and this is not tax advise. Iām just sharing what I would do.
Assuming youāre in the USA, the Tax Man will want to know the value (in $USD) if whatever you traded for BTC (gold, euros, a carā¦ whatever.) So, I suggest that you edit the current transaction to show a āTradeā where you āsentā USD (based on the spot price of gold at the time, for instance) and āreceivedā a certain amount of BTC. Then I would add some detail to the āDescriptionā field as a note / reminder of where that $USD value came from (referencing a bill-of-sale if you can.)