I've noticed the restriction on some YouTube video as well. With one account of mine I'm able to see them though, even if I don't remember giving my credit card

I've noticed the restriction on some YouTube video as well. With one account of mine I'm able to see them though, even if I don't remember giving my credit card details or ID. I created this account a long time ago so I might be wrong. I think they asked for my phone number for verification instead.