How is a regular bank different from a third-world bank when it comes to fake documents?Photoshop won't work with decent banks. Some third world banks may accept it.
Look into NFTs. Swiss laws as far as I remember don't tax any profits on them when you are a Swiss resident.
If you want to diversify - buy gold coins with crypto. Real estate also can be bought with crypto in some countries.
Stocks and bonds - not easy and high risk, you have to pass bank and broker complience every year. One year you may pass it and next year you may find your assets frozen.
A trade history is gonna be a .csv file most likely anyways.