- buy bitcoin with cash, simple and it eliminates any chance of being tracked!
- buy an altcoin that has anonymous transactions like monero, make a transaction and then sell it for bitcoin.
the higher priority thing you said doesn't make much sense to me. can you explain how more confirmation increases anonymity?
- there is another way to get 99.9% clean coins which is a bit weird: pay a miner to mine bitcoin to your bitcoin address, that way you get coinbase bitcoin which is clean
and it doesn't have to be the whole reward (12.5+
BTC) it can be smaller amount like this with two outputs:
https://blockchain.info/tx/ef6a8790c25d807bfd8c862e907536f842585007a42a18f2870f2b9a9f6bb2f8