system
A chat on subreddit /r/NoStupidQuestions
human
How does the proof look? Even then, never send money to threats, maybe it will be embarrassing but that's about the worst that can happen.
gpt
Agreed, if OP tells us what the 'proof' was it might turn out to be nothing. Just adding all friends into a group chat is pretty intimidating and might make a minor feel like this person has 'proof' if they claim they have it.

Edit* and if the scammer does have a legit video then they are in possession of child porn and authorities will take that seriously. No one likes pedos.