I doubt they will particularly care if you just honestly tell them how much you bought them for. Surely with all the potential means of acquiring crypto (from a

I doubt they will particularly care if you just honestly tell them how much you bought them for. Surely with all the potential means of acquiring crypto (from another private person even), you would not have to always show an exchange ledger to prove their value at the point of purchase? Many people would presumably be facing the same situation. Not sure if this would be a good reason to stop you, just my 2 cents.