I&#x27;ve researched BTC laundering, because I&#x27;m too curious to live.<p>The main method of doing it is via &quot;mixers&quot;, servicss that distribute your BTC among hundreds of accounts, and then pay you back (minus a small fee) via hundreds of other accounts. Theoretically, it&#x27;s impossible to track a single payment through such a process, since the BTC paid back isn&#x27;t the BTC paid in.<p>Another possible security measure woukd be the use of multiple accounts, allowing legitimate purchases and purchases involving physical locations to be separate from illegitimate buys.<p>The main weak point is your location; once a physical object is shipped to you, it&#x27;s real easy to tie that to your illicit BTC wallet, and from there, you&#x27;re hosed.