Help understanding the meaning: 「ごまかしたってちゃんと聞いたんだからな」

Question

I've been trying to get the meaning of this sentence for a while and I just can't figure out the grammatical structures behind it. The sentence is:

ごまかしたってちゃんと聞いたんだからな

I found out that ごまかした the plain past form is from ごまかす and the って is probably for bringing up a topic (?). Also 聞いた is the plain past form from 聞く. But I don't know what to do with the ちゃんと and also the ending of the sentence. What does the んだ to the verb and what is the sentence ending からな?

Answer 1

• This たって means "even if" or "even though". See JLPT N3 Grammar: たって (tatte) Meaning
• For the meaning of ごまかす, see Meaning of ごまかす
• This んだ is explanatory-の used to convince/persuade someone.
• から is basically "because", but here it's more like "...so, you know what".

ごまかしたってちゃんと聞いたんだからな
Even if you try to hide it, I heard it, you know.