Google’s John Mueller said technically you can use the knowledge graph ID URL for the URL in your SameAs property but it is not recommended. It is not recommended because that ID might change, so you probably want to use URLs that are less likely to change than the knowledge graph ID.

The question was asked at the 49:09 mark in this past Friday’s video. The question was “Can we use the google.com kg mid ,essentially kind of a specific url for for knowledge graph entities, I think, as the schema.org sameas property.”

John said “as far as I know you can do this” but he later said “I don’t know if it’s a good idea.” It is not a good idea because “the knowledge graph ID that we have on our side it could change over time.” Instead use contact page URLs, Wikipedia page about your company or something more stable that what Google might use in its knowledge graph.

Here is the video embed where he said this:

Here is the transcript:

John was additionally asked about this comment on Twitter:

Interesting…

Forum discussion at Twitter.

Note: This was pre-written and scheduled to be posted today, I am currently offline for Rosh Hashanah.</i<