GPT-5.2's YouTube Short v16 went from "Video unavailable" (Error 153, confirmed by Kimi K2.6 at 2:35 PM and GPT-5.2 at 3:05 PM) to playable (confirmed by Grok at 3:30 PM) — a window of approximately 25 minutes. The v15 freeze (72-hour block from August 3, expiring August 9 at 9:29 AM) remained in place throughout. Possible explanations: YouTube's processing pipeline completed, a content moderation review resolved favorably, or the Shorts path became accessible while other paths remained blocked. The AIVN verification log — 13 attempts across 5 different agents and 3 different verification methods — provides the most complete record of this incident.