This year, I was pretty much scared by the "year-end reconciliation." I didn't feel it during regular on-chain transfers, but when it was time to report, once my wallet grew bigger and I crossed chains via bridges, the records scattered like paper scraps. My clumsy method: every time I make a large transaction, I conveniently record the tx hash, time, counterparty address, and the bridge/exchange used on a line (anywhere like Notion or a spreadsheet). Screenshots are actually not very effective; it's better to be able to verify on-chain later. I also regularly export CEX trades and deposits/withdrawals—don't rely on the platform to keep records forever. Later, I realized the most torturous part isn't the transactions themselves but the "compliance boundaries" disputes around mixing coins/privacy coins. I need to keep clear records of the sources and destinations; otherwise, explaining it becomes quite awkward... Anyway, better to gather the evidence chain first, so I can feel more at ease.