I’m seeing a cost basis of my Ethereum holdings that is significantly higher than the cost has ever been in the coin’s history. I downloaded my transactions in CSV format and went through them and I can’t find anything erroneous (besides older transactions not even really having a USD cost basis equivalent). The per-coin cost basis is always “normal” for the date of the transaction.
Is this some sort of potential side effect of HIFO that I’m just blanking on? It seems like it shouldn’t be possible but maybe there is some weird accounting math at work here (been a long week, can’t really think through if that makes any sense).