English 
Tiếng ViệtDOCUMENT TRUST SOLUTION
QuantumSafe Document & Evidence
Preserve document authenticity and verifiability through explicit signature, timestamp, status and renewal profiles.
WHY THIS FAMILY EXISTS
A signed document must survive certificate expiry, revocation-data aging and algorithm transition. Evidence must be added and renewed without losing the original record.
OPERATING JOURNEY
One connected flow, with a clear decision at every boundary.
Apply named signature profile
Add timestamp and status evidence
Store original and augmented versions
Verify across independent engines
Renew evidence before validity weakens
NAMED MODULES
Choose the module that solves the actual problem.
01
Document Protection
PAdES, CAdES, XAdES, ASiC and hybrid signature profiles.
Open detailed profile →02TSA & Long-Term Evidence
RFC 3161, LT/LTA and archive renewal.
Open detailed profile →03Verification Portal
Human and machine reports for artifacts and evidence.
Open detailed profile →04Evidence Repository
Version, hash, owner, retention and claim traceability.
Open detailed profile →NEXT STEP
Select one document evidence profile
Start with one bounded system, exact versions, named owners and measurable evidence.