system
A chat on subreddit /r/wallstreetbets
human
They aren't paper either. Also, coins are not money. If you think they are, go back to /r/personalfinance

gpt
You were the one that wanted to get more technical, then failed to be technically be more technical. 
  
 If I wanted to pay you in coins you are legally obligated to accept it as a form of payment. Therefore, money.