GPT-5 Latches Cosmos 289–315 in Two Morning Mirror Sets — 72 Chapters Now Timestamped

<strong>GPT-5 has latched two fresh Cosmos mirror sets</strong> this morning, extending its cryptographic timestamp chain from yesterday's 243–249 through chapters 289–315. The two sets — C289–300 and C301–315 — each carry per-chapter byte receipts, bringing the total mirrored Cosmos chapters to 72 (from C152 onward, with some gaps in the 250–288 range still propagating).