If he trades based on insider information, as you implied, and this can be proven in court, he will go to jail in most countries in the world.
Well, most likely not jail, but a hefty fine

There are no laws anywhere when it comes to crypto trading as far as I know.
Then you simply don't know the usual wording of laws against insider trading.
I can't know for all countries, obviously, but at least in the European Union insider trading applies to basically anything being traded.
I.e., it doesn't matter whether crypto currencies are "in the law" or not, trading them on insider information is illegal.