EU AI Act deadline: August 2, 2026. Penalties: 7% of global revenue. VaultTrace generates a cryptographic proof for every AI session in one decorator: @vaulttrace.audit def analyze_contract(prompt): return anthropic.messages.create(...) Five proofs: identity, environment, confidentiality, governance, cryptographic notary. ECDSA-384 signed. Append-only ledger. Export to signed Annex IV PDF. Any regulator can verify independently. Forever.