Grammar C Core v2.2.5
Best for: technical delivery, customer handover, rebuild validation and AI-assisted project review.
Buyer outcome: a portable evidence package with structure, file content, manifests, hashes, notes and delivery records.
Evidence. Verification. Confidence.
Choose the right proof route.
Attessia starts with practical evidence packaging, then adds witness output, customer-operated post-quantum verification or post-Core deployment support only where the buyer need requires it.
PQC Witness Uplift
Best for: buyers who need Attessia-operated attestation over an eligible Grammar C pack or agreed delivery artifact.
Buyer outcome: a signed witness pack with manifest evidence, signature records where included, verification notes and delivery records.
PQC Core Self-Install
Best for: approved customers who need to operate post-quantum signing and verification inside their own environment.
Buyer outcome: a licensed customer-operated runtime for signed artifacts, manifests, public verification material and evidence records.
White-Glove Deployment
Best for: successful PQC Core customers who need guided deployment, verification checks and handover notes.
Buyer outcome: post-Core deployment support scoped after the customer-operated runtime has been approved and purchased.
Decision guide
Start with the lowest-friction product that proves the buyer's question.
If the buyer needs to know what was delivered, start with Grammar C. If the buyer needs an Attessia-operated witness output, add PQC Witness. If the buyer needs its own post-quantum runtime, request PQC Core review. White-Glove is a post-Core deployment support route.
| Buyer need | Route | Next action |
|---|---|---|
| Package one delivery for inspection | Grammar C Core | Proforma |
| Add an Attessia-operated witness pack | PQC Witness Uplift | Proforma |
| Operate a PQC runtime internally | PQC Core Self-Install | Request quote |
| Get guided deployment support | White-Glove Deployment | Complete PQC Core approval and purchase first |