Will my husband need an airline ticket to prove residency in order to apply for the DTV digital nomad visa from Hawaii?

Hi, I am from Hawaii, so have an American passport, & my husband is from Finland, Finnish passport, with a permanent resident green card for the US. We have been married 15 years & have both been living in Hawaii USA for 10 years.

We want him to apply as the main applicant (& me & our 3 children as dependents) for DTV digital nomad from our place of residence, which is Hawaii USA.

My question is, will they ask him for an airline ticket to show he lives here? Or will his state drivers license or utility bill be ok? We travelled to Thailand last June for 3 weeks & have been back here since, and we have not bought tickets back to Thailand, as we want to wait for approval for the DTV first.

Thank you!