Even if you are, they have your IP and know who you are connecting to. If the VPN is compromised there is no security. Better to use Tor or Tor + VPN.
The only real solution to making a transaction untraceable is via techniques similar to money laundering. Replace "dollar" with "packet" and the same principles apply. How do you get the dollar from person A to person B without some person C who can observe the path being able to infer person B? That's the question.
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