I used to think that tax reporting was just taking screenshots of exchanges at the end of the year, and that was pretty much it... Now I understand: the more you think "close enough," the more likely it is to collapse at the end of the year, especially when there are many on-chain transactions, making it hard to keep track.

I'm pretty simple-minded now: every time I deposit or withdraw funds, swap coins, or transfer on-chain, I casually record the transaction hash/time/amount/counterparty address on a line. The exchange also regularly exports transaction and fund flow data to cloud storage, organizing folders by month. Anyway, I do it when the transaction is completed, and it’s just part of the routine. Recently, someone was complaining again about miners/validators eating MEV and unfair ordering, right? Honestly, complaints aside, when it comes to reconciliation, these "queue-jumping" issues really affect costs and slippage records... Better to keep the evidence, at least to stay calm.