thanks 6

order to minimize the tax impact of the sale? An estimate is fine. As tong as Joaquin knows roughly what the coins were selling for the month he made the purchase, he can use that as a range. If he doesn't have the original records, he cannot recreate them. Joaquin must use a $0 basis. The coin exchange Joaquin uses is responsible for providing that information, so he can contact them and find the original purchase price. Joaquin can use a blockchain explorer to determine the date and time of his purchase and the fair market value (FMV) of the coins at that time