Well that definitely answers my question. Thank you. What about something like certificate blockchain?<p>e.g. <a href="https:&#x2F;&#x2F;github.com&#x2F;okTurtles&#x2F;dnschain" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;okTurtles&#x2F;dnschain</a>