Thanks for the links but can you share evidence for the "public IP address" claim? Each time I've read this concept (intriguing! possible!), I search for evidence and I can't find any.

The MIC and yellow dots have been studied and decoded by many and all I've ever seen, including at your links, are essentially date + time + serial#.

Don't get me wrong ... stamping our documents with a fingerprint back to our printers and adding date and time is nasty enough. I don't see a need to overstate the scope of what is shared though.