&gt; MML is much more easily traceable as you just look at the guy who mined the block and send the authorities to go and speak with him.<p>Well that&#x27;s easier said than done.  There are a large number of blocks for which the miner is not known.  The only reason the miner is known for as many blocks as it is is because several of the largest mining pools tag every block that they mine as a form of accountability to their miners (and of course bragging rights).