yes, hashchaining is useful

"1. Redeem those bitcoins in a country / bank that is out of reach of your country, or"

That doesn't result in 'clean money' that you can spend in your home country and not have trouble explaining where it came from to the first authorities that decide to ask.

Likewise, if you have the cooperation of a corrupt foreign casino, you can always claim to have just won the money at that casino. So make sure that whatever you describe isn't boiling down to something that is not a more effective strategy than that.