Public trust model
Nyvarra checks its registry record, the issuer’s registered key and domain-control evidence, the signed payload, and current lifecycle state. The issuing organisation—not Nyvarra—asserts that the recipient earned the credential. Verification does not prove accreditation, the truth of the achievement, or biological identity.
Trust packet
Evidence in one public view
Payload hash
Canonicalized and checked against stored SHA-256.
Distinct outcomes
Verified, revoked, superseded, tampered, or unknown.
Verification checks
Integrity
The credential payload is canonicalized and checked against the stored SHA-256 hash.
Signature
The signed JSON-LD proof is checked against the key registered to the issuing organisation in Nyvarra.
Issuer
The public result includes the issuing organisation, verified domain, and issuer profile link where available.
Lifecycle
Revoked, expired, superseded, tampered, unknown, and verified states are shown as distinct outcomes.
Public result states
Public pages use separate states for verified, revoked, superseded, expired, tampered, unavailable, and unknown results. A failed registry lookup is never presented as verified.
Signature, payload hash, issuer context, and lifecycle checks pass.
The issuer has withdrawn the credential while keeping the audit trail visible.
A corrected credential has replaced the original serial.
The proof failed or the serial cannot be resolved in the registry.
Issuer context
Public issuer profiles show legal and domain context, program activity, credential counts, and verification activity where the issuer has published a profile.
Review
Organisations are reviewed before approval. Domain control proof is optional and is shown separately from application approval on issuer records and credentials.
Domain
A verified-domain signal means Nyvarra observed the required DNS proof. It does not establish accreditation or validate every claim the issuer makes.
Registry
Approved issuers can publish public profiles with active programs, counts, and recent credential activity.