OK, I'm going to say it: How to clean 'dirty' or undeclared crypto using DEX's: Step 1: Open huge position, very likely to be liquidated on a DEX Step 2: Hedge with opposite position on CEX Step 3: Wait for volatility to do it's thing Either you make a multiple on your dirty money in 'clean' profits or your dox'd CEX account wins Result: the dirty crypto is either gone (margin call) and transferred to your CEX account via legit trades or your 'dirty' crypto becomes cleaner as it is diluted by DEX trading profits.