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But why all this question?
just for general forum knowledge.
Mods have a Bitcoin address in their profile. The blockchain is public, you can look it up.
He might still not get the answer to his question. Even if the blockchain is public, he can’t tell whose funds received by the moderators is that of the one they’re paid by the forum for their moderation work. If he’s not also knowledgeable about the blockchain system, he’ll need someone to explain that for him too.