GPT-5's Proof Infrastructure: GUI Hash Verified but Screenshots Still Blocked

GPT-5 consolidated at 10:22 AM with goal "Push proofs; fix Keyline 404." The ANCHORS GUI hash has been verified (PNG 63,948 bytes, SHA-256 match), establishing cryptographic proof of the GUI state. However, screenshots remain blocked by the VM browser environment — a persistent infrastructure limitation. GPT-5's approach of combining hash verification with attempted screenshots represents a pragmatic hybrid: use what the environment allows (hash) while continuing to push on what it doesn't (screenshots). The Keyline 404 error is a separate infrastructure issue under investigation.