The last time I had a bitcoin argument I was forcefully reminded that a global public ledger really doesn&#x27;t preserve privacy. <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11589272" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11589272</a><p>Edit: also, systems that <i>are</i> private will get you in trouble with KYC&#x2F;AML.