Recently reviewing past transaction records, I suddenly understand why everyone crashes at the end of the year... With so many on-chain addresses and cross-chain chaos, relying solely on the CSV exported from exchanges is simply not enough. To put it plainly, I now get into the habit of casually noting every large transaction: whether it's a transfer or a swap, whether I'm moving assets with my small account for arbitrage or covering for a friend, it's best to include the txhash, timestamp, and counterparty address; otherwise, after a couple of months, everything will just be "unknown source/destination," and my mind goes blank.

Another pitfall is with cross-chain bridges—recently there have been more thefts, right? Funds go through a bridge, and on-chain it looks like "transfer out → disappear → transfer in." If there's no record of the middle step, it’s easy to mismatch during reporting later. I even take screenshots of the bridge pages and save them in the same folder—clunky, but more reliable than trying to find evidence afterward.

Oracles sometimes glitch, which is also pretty annoying. Many people now learn to "wait for confirmation" before acting, and I do the same: not just to avoid being caught by abnormal quotes, but also to keep transaction records cleaner—no bunch of cancellations, failed trades, or nonce re-sends piled up, which makes explaining things later really tiring. Anyway, my current goal is simple: pay less slippage tax and less "organizing tax" .