First off, if you’re reading this thank you for your time. The title basically says it all. All of my USD to Bitcoin transactions were done on one exchange thankfully, but those bitcoins were then transferred to multiple exchanges where I bought and sold various coins probably hundreds of times (I had no idea what I was doing). There is no realistic way that I could match up my transactions to prove losses or gains, so what do I do with the coins that I still have? To simplify things I just put everything back into Bitcoin and we’re talking less than $500 worth if that makes a difference. Can I sell those for USD and claim a loss or at least pay ordinary income taxes on that transaction? Any help or advice would be greatly appreciated.