> He's alleged to have a palace worth 100 million rubles on the Black Sea coast.

That wouldn't be in a bank account, so he's safe. It's only following cash into/out of the banking system

You severely underestimate the cost of the palace. It's in ballpark of a billion USD.

> Does Putin himself come under the purview of this law? He's alleged to have a palace worth 100 million rubles on the Black Sea coast.

Of course not. Anti-corruption measures in places like that are selectively enforced. Go after the little fish to score anti-corruption points, while the big fish are literally above the law.

I think Putin's watch collection is estimated to be worth around 700,000 dollars, which is quite a lot more than his annual wage of around 120,000 dollars (well, his salary is probably worth a lot less in dollars now).

Silly you, of course he does not. You know, some animals are more equal than others.

Even if he does, who will enforce that?

It's declared so it's all ok