SOURCE 0 : THE EVIDENTIARY BOUNDARY OF AUTONOMOUS ACTION

Autonomous AI decisions engage liability — but not through system performance. They become legally attributable only when a competent human authority has documented governance before execution. SOURCE 0 defines this evidentiary threshold as T‑0: the moment where human authorisation is cryptographically sealed by an independent authority. Without a T‑0 seal, an AI act has no author — and under the EU AI Act and the Product Liability Directive 2024, that is a liability without a ceiling.