Legal metrology
Certificates that outlive their issuers.
- Type-approval and calibration certificates as trusted artifacts
- Five-tier authority hierarchies with monotonic scope narrowing
- Offline verification at inspection time — no phone-home to the NMI
A measuring instrument is type-approved, tested by an accredited laboratory, and calibrated against traceable standards — and the entire chain of authority must still hold at the time and place of verification, decades after issuance. Signatif carries that chain inside the certificate: scope narrowing from the national metrology institute to the laboratory to the instrument class, dimensional attestations for time and environment, and offline verification for inspectors in the field.
Pharmaceuticals
Batch release under track-and-trace mandates.
- Serialization and batch records as multi-dimensional artifacts
- Operator certification as a person-dimension co-signature
- Revocation propagation when an authorization is withdrawn
A batch release must demonstrate that the product came from an authorized manufacturer, was inspected by a certified operator, was manufactured under compliant environmental conditions, and was released at a verifiable time. Regulators mandate digital provenance; the industry needs one verifiable object that carries all of it. Signatif makes each of those claims a cryptographic dimension with its own attestation, and revocation that propagates when an authorization is withdrawn.
Food safety
Provenance across supply chains and jurisdictions.
- Inspection certificates with cross-domain co-signatures
- M-of-K multi-log inclusion — no single controlling operator
- Long-retention artifacts verifiable without the original issuer
Inspection and provenance records cross many organizational boundaries between farm and shelf, in many jurisdictions, with long retention periods. Signatif’s cross-domain co-signatures let independent authorities converge on one record, and its transparency logs give every participant third-party evidence of what was issued — without a central operator.
Defense procurement
Component provenance that can be withdrawn.
- Source-authorization chains with hard scope enforcement
- Threshold-gated, auditable revocation with propagation
- Ceremony records documenting key management end to end
Supplied components and materials must be traceable to authorized sources, and authorizations must be revocable — retroactively and provably — when a supplier loses standing. Signatif binds provenance to scoped authority and propagates revocation to every artifact transitively bound to a revoked state, across all dimensions and chains.