正确的语义标签版权信息 -html5

The <footer> tag seems like a good candidate:

<footer>&copy; 2011 Some copyright message</footer>

Put it inside your <footer> by all means, but the most fitting element is the small element.

The HTML5 spec for this says:

Small print typically features disclaimers, caveats, legal restrictions, or copyrights. Small print is also sometimes used for attribution, or for satisfying licensing requirements.

it is better to include it in a <small> tag The HTML <small> tag is used for specifying small print.

Small print (also referred to as "fine print" or "mouseprint") usually refers to the part of a document that contains disclaimers, caveats, or legal restrictions, such as copyrights. And this tag is supported in all major browsers.

<footer>
<small>&copy; Copyright 2058, Example Corporation</small>
</footer>

In a link, if you put rel=license it: Indicates that the main content of the current document is covered by the copyright license described by the referenced document. Source: http://www.w3.org/wiki/HTML/Elements/link

So, for example, <a rel="license" href="https://creativecommons.org/licenses/by/4.0/">Copyrighted but you can use what's here as long as you credit me</a> gives a human something to read and lets computers know that the rest of the page is licensed under the CC BY 4.0 license.