I am from EU, and I plan to apply for DTV visa as a remote worker (in Hanoi or HCMC, or maybe Taipei), but I struggle with a requirement of job contract, or a contract with a client.

I have as my income is more of a "passive". I don't work for clients, I work for myself and sell my own mobile applications on Play Store & Apple Store. I get paid monthly by Google / Apple. It's kinda similar as selling a book on Amazon or living off Youtube content etc.

All I can show is a link to these stores with my apps & my name next to it. Would that be sufficient proof/document?

Or would it be better to just apply for soft power using an agent? Thank you!