This sounds like what we use uid for in microformats - the url that you want as the persistent identifier.
http://microformats.org/wiki/uid - it looks like you wrote this up a while back, Ed. See u-uid in h-entry http://microformats.org/wiki/h-entry On 8 Aug 2017 5:58 pm, "Ed Summers" <e...@pobox.com> wrote: > Hi Kevin, > > > On Aug 5, 2017, at 9:19 PM, Kevin Marks <kevinma...@gmail.com> wrote: > > > > That use case sounds more like rel="canonical" > > You weren't the only one (myself included) who thought that. Michael > Nelson, one of the authors if the identifier I-D, just wrote a blog post > explaining why not canonical: > > http://ws-dl.blogspot.com/2017/08/2017-08-07- > relcanonical-does-not-mean.html > > I think I'm convinced that canonical isn't the right fit for what they are > talking about. But if rel=bookmark could be used in <link> elements I think > it would work better than a slightly similar, oddly named, link relation, > which IMHO is bound to cause confusion for web publishers. > > //Ed