UDRLiving · Revisable
Universal Document · Open document infrastructure
A document that can prove what it is.
Create living documents with history. Revise them clearly. Seal the final version. Verify integrity anywhere, right in the browser.
Public beta. Integrity, signature, identity, time, current status and transparency are reported independently.
UDSSealed · Verifiable
CREATE→
UDR→
REVISE→
SEAL→
UDS→
VERIFY→
SHARE
Try it locally
See what happens when a file changes.
Capture a sample fingerprint, then alter one word. Verification turns red immediately. Restore the original and it verifies again. This educational demo is not represented as a canonical UDS signature.
Integrity
NOT CHECKED
Capture the current text to establish a comparison fingerprint.
- Captured
- —
- Current
- —
- Signature
- Not performed
- Signer identity
- Not checked
- Current status
- Offline · not checked
Why UD instead of only PDF or Word?
Why Universal Document?
PDF and Word remain useful. Universal Document brings portable structure, revision history, trust information, policies, browser-ready sharing, and intelligence-readiness into one document architecture.
Open it anywhere
The browser-ready version opens using ordinary browser technology. No Universal Document app is required.
Works offline
The document remains readable without Wi-Fi or an internet connection.
Knows what it is
A Universal Document can carry structure, document type, policies, history, and other information about itself.
Can explain itself
Compatible Reader experiences can answer questions from the document and point back to the source.
Can preserve change
A UDR keeps revision history rather than silently replacing the past.
Can prove finality
A sealed UDS is designed to make later alteration detectable.
Works for people and software
Humans can read it normally while compatible systems can understand more than page coordinates and formatting.
PDF is still available when required
Export a compatibility copy for courts, portals, printers, or counterparties that specifically require PDF.
PDF made documents portable. Universal Document is designed to make them portable, understandable, and verifiable.
Five flagship workflows
One understandable product loop.
Contract
Draft and negotiate as UDR, then seal the selected final revision.
Research
Keep paper, citations, supplements and provenance together.
Evidence
Package records and media with integrity evidence and history.
Credential
Issue a policy or certificate with visible status and expiry.
Proof of what I sent
Preserve the exact document you shared and make later modification detectable.
How verification works
Verification that says what it actually means.
Offline verification can establish document integrity. Identity, trusted time, current status and transparency are distinct claims and may require separate evidence or an explicit network check.
Read the technical model1
IntegrityRecompute protected content and verify the signature.
2
Signer identityDistinguish a valid signature from an independently trusted signer.
3
TimestampShow whether time is local-only or independently verified.
4
Current statusCheck revocation or supersession only when the user requests a network lookup.
5
TransparencyShow whether an inclusion proof is present and verified.
Start here
Start with one document.
Create a living UDR, seal a final UDS, and verify what you received.