RFC 0008 — Backend fingerprint v1

Purpose

Make provenance complete and comparable.

Fields (backend_fingerprint_v1)

schema: "helix.backend.fingerprint.v1"
canonicalization_id: "json.c14n.v1"

runner_image_digest: string
tool_versions: { <string>: <string>, ... }
determinism_flags: [string, ...]

hardware:
  cpu_arch: string
  gpu_present: boolean

os:
  name: string
  version: string

Digest is sha256 of canonical JSON bytes.

Reference schema

• schemas/hub/backend_fingerprint_v1.schema.json
• src/helix/schema/hub/backend_fingerprint_v1.schema.json