Where would their definition of 'verify' be documented?

In the US, the recent federal bill aimed at age verification is more of an 'honor system', where just a yes/no box would suffice. Their position seems to be that it's not the government's job to try to prove you're not lying.

Japan does the same thing when you buy beer or cigarettes, you just tap "I'm at least 20" on the screen and off you go.