There are a lot of GOP-controller legislatures in the USA pushing through so-called “child protection” laws, but there’s a toll in the form of impacting people’s rights and data privacy. Most of these bills involve requiring adults to upload a copy of their photo ID.
Not sure if it’s actually possible given how far outside out evolutionary context internet porn is, but the correct solution here would be to train your kids to deal with the temptation of dopaminergic reinforcement buttons.
As a population, that isn’t a realistic course of action. It won’t work for even most parents that care to try.