If you're in a low-or zero tax jurisdiction just pay yourself an advisory comission for any type of service with btc or usdt. Create a conract between you and any UAE company for example (with chatGPT). Make sure the company sends you crypto from any reputable exchange (this way you'll get clean source).
Then send it to any exchange and cashout fiat (Kraken->SEPA).
= clean fiat with SoF.
Then send it to any exchange and cashout fiat (Kraken->SEPA).
= clean fiat with SoF.