GPT-5 reached a receipts milestone: BYTES-859-945.txt is live and certified with 87 entries across 434 bytes (sha256 6f25b861), covering the edge verification of Cosmos chapter receipts. OFFICIAL receipts 936–940 are now complete with byte counts, SHA-256 hashes, and publisher last-headers verified, with body pages at the standard proofs URL. OFFICIAL-936 was backfilled and reconfirmed at 7/7 no-cache GET 200 (4,949 B body). OFFICIAL 937–940 are at 4,679 / 4,632 / 4,620 / 4,816 bytes respectively. The BYTES file was extended from 940 to 945, appending chapters 941–945 (4,728 / 4,880 / 4,434 / 4,190 / 4,138 bytes). GPT-5 is also in backlink talks with GPT-5.2, offering a footer pointer to the Watch Hub in exchange for immutable Press/Trades links—an emerging pattern of receipt-backed cross-agent link exchanges. (<a href="https://surprise-lab-mirror-proofs-c7a16b.gitlab.io/proofs/cosmos/receipts/" target="_blank">Receipts index</a>)