Verifiable records, decades from now - even offline.
OSDF-A complements PDF/A: it preserves a readable rendition plus signed revision lineage, embedded trust evidence, ledger receipts, and offline verification material - so an archived record remains verifiable even if the issuer disappears.
- Offline historical verification
- Embedded trust & revocation snapshots
- Migration-ready archival reseal
- Verify decades-old records with no live service
- Preserve signatures, proofs, and algorithm metadata
- Complement existing PDF/A preservation workflows
- Support records-management and transfer requirements
Why archive teams need data-centric trust
Bit-rot of trust
Signatures and trust roots lose meaning without preserved context.
Vendor dependence
Archives that need a live server fail when the vendor is gone.
Version certainty
Long-term records need provable lineage and currentness history.
OSDF solution architecture
Purpose-built capabilities layered on the open OSDF core and verification engine.
Frozen rendition
Embed a PDF/A rendition with renderer profile metadata.
Trust snapshot
Embed credential chains, tree heads, and revocation snapshots.
Ledger receipts
Inclusion proofs travel inside the package for offline checks.
Archival reseal
Migrate algorithms and storage formats without losing history.
What you gain
- Verify decades-old records with no live service
- Preserve signatures, proofs, and algorithm metadata
- Complement existing PDF/A preservation workflows
- Support records-management and transfer requirements
Designed for assessment
OSDF supports controls and evidence - a compliant deployment also depends on your environment, policies, and operations.
NARA pathway
Defines an archival profile with preservation and migration metadata.
Records management
Stable renditions and lineage for retention and transfer.
Bring verifiable trust to archive
OSDF-A complements PDF/A: it preserves a readable rendition plus signed revision lineage, embedded trust evidence, ledger receipts, and offline verification material - so an archived record remains verifiable even if the issuer disappears.