I think you&#x27;re under the assumption that currency conversions are traceable.  Once you convert bitcoins to dollars or yuan, your beefy server can&#x27;t see the remaining transactions.<p>For example:  20 BTC -&gt; $4000 -&gt; 25000 yuan -&gt; 4 new addresses @ 5, 10, 2, &amp; 8 BTC<p>The only way to trace these is to compromise the exchange servers, get account information, and subpoena  transactions from the banks.  Very difficult to do given the international nature of these exchanges and banks.