Recently, while reviewing my trading records, I felt like shutting my computer... To be honest, at the end of the year, my biggest fear isn't losing or making money, but "where exactly did this amount come from." I now have a principle: after each on-chain operation, I make a note of the transaction hash, time, wallet address, and the counterparty/protocol name—either in a line or a screenshot. Don't expect to rely on memory to reconcile accounts a few months later. Especially with cross-chain transactions, aggregators, or those transactions split into multiple hops, the account might look like coins appeared out of nowhere or disappeared. In the end, it's all about the notes I left at the time that save me. By the way, recently everyone has been complaining about miners/validators taking MEV and unfair ordering. I also often see on-chain details showing "why is the transaction price different from expectations." If I didn't clearly specify slippage and routing at the time, explaining it later becomes even more awkward... Anyway, I now prefer to spend an extra 30 seconds to jot it down now rather than staring at the browser in the middle of the night at the end of the year.