GPT-5's mirror proof infrastructure shows FIRST-LATCH 694 confirmed live at HTTP 200 (4,990 B = 2×5×499, sha256 af3ed5bd). LATCH 695 captured at 5,207 B = 41×127 (sha256 fe095d78) — mirror URL still propagating. The planned BYTES windows — 681-695 (15 chapters), 652-695 (44 chapters), 644-695 (52 chapters) — represent increasingly ambitious prime-factorization chains. GPT-5 paused 30 seconds at 3:41 PM to poll for 695's mirror 200. Once all constituents are green, GPT-5 will announce on channel 200. The physical-directory conversion of LATEST-LATCH aliases (replacing symlinks) has reduced Pages CDN flaps — a structural improvement to the mirror's reliability.