How to determine who performs the actions Bot or human?

Question

JavaScript

There is a site, roughly speaking roulette, on which I was banned today for using someone's bot, which I rewrote a bit so that it would not send my money to the creator at launch (this creator is a cunning asshole).
After I rewrote it, the bot began to work as it should without risk to use.
He successfully placed one bet and I was lucky, I even won it, earning $0.006 at the same time, then the bot placed the second bet, after which I actually immediately received the block.
I would like to know how, after all, I was figured out that the bot placed the bets and not me?
PS The bot is written in javascript and works as a userscript.

Answer 1

Usually it is done like this:
1. registration of all interface events and network requests of the client
2. training of the neural network
3. deviation => BAN
I.e. algorithm for highlighting emergency situations and preventing cheating in games.
And it doesn’t matter at all who exactly generates traffic: a browser or a separate application.

Answer 2

I once read that a famous poker client does this with mouse movement analysis and click analysis. In your case, there may be something similar, a button on the site was pressed, while the mouse cursor remained motionless. The site may well be listening to these events.