Struct BackzoneEvidence 

pub struct BackzoneEvidence {
    pub detected: BackzoneDetected,
    pub claimed: BackzoneClaim,
    pub evidence_sha256: Option<String>,
}

The backzone / PACKRATDATA source-membership evidence axis (T12.5b) — mirrors BackwardEvidence, but detection is anchored to the pinned reference release’s backzone hash (REF_2026B_BACKZONE_SHA256). Source membership, hash-backed or claim-only, never inferred from aliases, zone names, link counts, output byte shape, pre-1970 differences, or DATAFORM. Scope: whether backzone participated at all — the subset-vs-all (PACKRATLIST) distinction is T12.5c, and DATAFORM is T12.5d.

Fields

detected: BackzoneDetected

claimed: BackzoneClaim

evidence_sha256: Option<String>

The pinned reference backzone hash, when detected present.

Implementations

impl BackzoneEvidence

pub fn reconcile( source_inputs: &SourceInputs, claim: Option<bool>, reference_backzone_sha256: &str, ) -> Self

Detect backzone participation by checking whether the pinned reference backzone hash (reference_backzone_sha256) appears among source_inputs. Hash-backed, version-scoped. The claim is recorded independently. Does not read the link/alias surface — inference is impossible by construction. (reference_backzone_sha256 is injected so the detector is unit- testable without vendoring the large reference file; production passes REF_2026B_BACKZONE_SHA256.)

pub fn status(&self) -> &'static str

Reconcile detected vs claimed (cf. BackwardEvidence::status). No detected_absent — absence is never asserted for backzone (see BackzoneDetected).

Trait Implementations

impl Clone for BackzoneEvidence

fn clone(&self) -> BackzoneEvidence

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for BackzoneEvidence

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.