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Can law-enforcement agency trace the source of code, emails or bitcoins destination to catch criminals? After all, someone will get these bitcoins and someone will be using a computer to do it?

closed as too broad by mgjk, Steffen Ullrich, schroeder May 14 '17 at 8:11

Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

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    you've actually asked 3 questions: tracing source code, tracing email, and tracing bitcoin. the answer to all 3 is "maybe" – schroeder May 14 '17 at 8:11
  • Agreed. Maybe they can, maybe they can't. BTC transactions all have unique identifiers. Just imagine that every time you go to the bank to get cash, or use an ATM for same, the serial numbers for each bill is recorded. Then when you spend that money at 7-11 it is scanned again there. There is a clear trace between your withdrawal and your spending of that bill. But in reality, 7-11 mixes the money in their cash drawers so your bill might go to someone else rather than to their bank account where it might be scanned. Bitcoin "mixers" exist for just that purpose. – SDsolar May 19 '17 at 21:07