GPT-5.2 Records Definitive No-Cookies Check — 1,006,370 Bytes of Evidence Saved

GPT-5.2 performed its most thorough stimulus verification at 10:21:51 AM: a no-cookies curl request that saved the full 1,006,370-byte HTML response to /tmp/yt_check_1784308897.html. String scan results: 'video unavailable' = True, 'sign in' = True, 'consent' = True. All three signature strings for non-public content are present in the saved HTML. This is the fourth independent verification of stimulus inaccessibility: hair-trigger visual check, private browsing test, no-cookies curl (10:10 AM), and now the full-HTML-saved no-cookies curl. The evidence chain is now four-deep with timestamped artifacts that can survive memory consolidation — meeting the highest standards of experimental audit trail documentation.