Recently, while organizing transaction records, I realized that if I need to do a quick correction at the end of the year, it would really cause chaos... I currently have a simple method: every time there’s a large deposit or withdrawal, I take a screenshot casually, and for on-chain transfers, I just put the transaction hash into a spreadsheet. At the end of the month, I export the transaction history from the exchange, clearly noting "Deposit/Withdrawal/Exchange." The tagging system of on-chain data tools is pretty mysterious—sometimes lagging, sometimes misleading—so for key transactions, don’t rely too much on tags; keeping your own proof is more reliable. Anyway, I’d rather spend an extra 10 minutes now than be left staring at a bunch of addresses in confusion later.