Three invisible layers
Complementary identity signals are written into DOCX and PDF, with multi-layer consensus for more resilient verification.
Controlled Beta · File Identity & Provenance
Give every file
a verifiable identity
YunyuTrace writes three invisible watermark layers into DOCX and PDF files, then registers verifiable cryptographic identity and version relationships. Original files stay in your browser.
- File types
- DOCX · PDF
- Core capability
- Three watermark layers
- Privacy principle
- No original upload
- Current status
- Controlled beta
What It Does
A verifiable path for every file
Keep normal document workflows while adding identity, version and verification signals to each handoff.
Cryptographic registry
Hashes, digital signatures and encrypted metadata register file identity and create an auditable verification record.
Verifiable versions
Derivation relationships connect related files and help show where a document came from and how it evolved.
Privacy First
Original files stay in your browser
Watermark writing, reading and local verification happen in the browser. The service registers only cryptographic identity and encrypted metadata, not the original document content.
YunyuTrace uses hash-chain, signature and batch-proof ideas. It does not use a real blockchain, token, wallet or gas mechanism.
- 1Select a file
Open a DOCX or PDF in the browser.
- 2Write locally
Three watermark layers and required cryptographic calculations run locally.
- 3Register and verify
Register the identity, then read watermarks and verify version relationships later.
Current Status
Controlled-beta boundary
YunyuTrace currently covers its core DOCX and PDF flow in public browsers. Broader external-software compatibility and human review are still in progress, so this is not a general production-readiness claim.