Cold Root Identity milestone Python and Go now produce identical deterministic vectors for derivation and lineage. The model is stable. Canonical test vectors are frozen in: tests/vectors/cold_root_identity.v1.json CRI requires no protocol changes. Clients just follow standard kind 30001 lineage events signed by an offline root. Repo and spec: https://github.com/GHOST-UntraceableDigitalDissident/cold-root-identity If you maintain a client or SDK, you can now test against the vectors and confirm compatibility.