What this Tool does
Rebuild the canonical UTF-8 archive bytes and report their SHA-256 deterministically.
Reproducibility boundary
Phase 77 proves deterministic local reconstruction and SHA-256 equality only. It does not create a digital signature, trusted timestamp, remote trust anchor, ownership/authenticity proof, real-world chronology, legal chain of custody, account/provider identity, cloud origin, semantic save validity, compatibility decision, restore authority, or live-save mutation authority.
Input contract
Choose one Phase 77 deterministic archive JSON. Recipe, UTF-8 path order, canonical entry bytes, entry digests, manifest digest, archive ID and embedded Phase 76 bundles are recomputed locally.
Safe interpretation
Canonical byte equality can show that the same supported evidence inputs rebuild the same local archive. It cannot identify who created the evidence, establish a trustworthy date, prove ownership or origin, or authorize restore/mutation.