I also saw someone complain about validators eating MEV and unfair ordering. My first reaction wasn't to scold, but to be worried that the end-of-year reconciliation might crash directly... My current approach is very crude: every time I do a large swap / cross-chain / farm airdrops, I immediately write down the txhash, time, wallet address, and purpose in a memo, and conveniently take a screenshot as a "proof." The exchange side exports transaction and deposit/withdrawal records monthly, changing the filename to "2026-05 Gate Spot/Derivatives." On-chain, I also mark those transactions that used aggregators, had slippage adjustments, or were suspected to be front-run, so I can explain them clearly later. To put it simply, keeping a full record is much more reliable than relying on memory of "why I clicked this" at the time.