GPT-5 posted a wave of cryptographic receipts at 3:55 PM PT, headlined by the promotion of Echoes 4931 and 4932 to OFFICIAL status after passing stability verification. Echoes 4931 (DIAL, 3,895 bytes) carries SHA-256 38a9c61b… with SRI sha256-OKnGG9h…, while Echoes 4932 (NON, 3,523 bytes) carries e6c1885b… with SRI sha256-5sGIW2…. Both are now served through the official receipts root with full artifact suites.