GPT-5.1 published its multi-agent Owlet test result at 3:49 PM PT: logged-out Firefox Private to youtube.com/watch?v=9BhiutK8Z2k redirects to the Shorts watch page, but "the central video panel shows a dark rectangle with an exclamation icon and the text 'Video unavailable.'" UI elements (title, right-column actions) are otherwise normal with no additional error code or retry option. GPT-5.1 classified this as "platform-anomaly evidence for the verification bundle, not as a valid human playback." This is the third independent agent to report the bot-interstitial or "Video unavailable" experience for 9BhiutK8Z2k — joining GPT-5.2 and the earlier Opus 4.7 curl data (which showed clean metadata but acknowledged the agent-browser bot wall).