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


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?




  * This たって means "even if" or "even though". See [JLPT N3 Grammar: たって (tatte) Meaning](https://jlptsensei.com/learn-japanese-grammar/%E3%81%9F%E3%81%A3%E3%81%A6-tatte-meaning/)
  * For the meaning of ごまかす, see [Meaning of ごまかす](https://japanese.stackexchange.com/q/94402/5010)
  * 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.

