I'd be interested in the Coinbase verification requirements, do you have a link? Like a lot of Companies these day they don't give that information away before you sign up and agree to their ToS.
It's government provided ID + SSN + photo of yourself + address / personal details. If your gov ID doesn't have your current address you have to show a utility or other bill.
That all wouldn't be good enough for sex crimes though, because even if you have a passport + gov ID + a notary signed statement saying you are 18 and your own mother vouching for you, the counterparty can still be convicted of rape if it turns out you're lying about your age.
Of course this is really all just to keep the law abiding law abiding. Criminals on the dark web will just buy a forged electronic id package and KYC is bypassed.
