Very nice explanation. Thanks a lot!<p>So if I understand correctly this would be somewhat akin to having a &quot;universal clock&quot; that is ever increasing, and that can be read&#x2F;seen by anyone (like you said, universally). So you only need to know the &quot;time&quot; on the clock, when you do something, so that afterwards you can verify that indeed the &quot;timestamp&quot; happened.<p>Is this somewhat of a correct analogy? At least that&#x27;s how I understood it.<p>In any case, it does seem interesting to be able to have a universally verifiable time keeping &quot;signal&quot;. I&#x27;m guessing there must be other uses as well.