Year-end tax reporting really can drive people crazy... I'm now basically "trading while leaving traces," otherwise when I look at a bunch of on-chain transfers back and forth, I can't even explain it clearly myself. On the CEX side, I export transaction records and deposit/withdrawal records once a week and toss them into the same folder; on the blockchain, I just paste each cross-chain/exchange transaction hash into a spreadsheet, with a note saying "from where to where, for what," basically writing little notes to my future self.

Layer 2 keeps arguing about TPS, fees, and subsidies every day, but I'm more worried about blindly crossing chains just to save a few bucks on fees, ending up with a tax report full of "unknown sources/destinations." Anyway, I prefer to keep things simple, record clearly, so I won't go crazy at the end of the year just because I get itchy to place orders.