Definition. Policy stamp [ftip-004Z]
Definition. Policy stamp [ftip-004Z]
A policy stamp \(\nu \) is a content-addressed description of an executable policy: model artifact, tokenizer, action serializer, decoding settings, and implementation revision. Resolving the stamp produces the action law \(\pi ^\nu (\,\cdot \mid \mathsf H_t)\) for every public history in its declared domain.
Two stamps are equal only when every component that may change the action law is equal. A display name or checkpoint step is therefore insufficient.