Watermark Control
QMark embeds a unique, imperceptible watermark into every copy of a document or image. When a copy leaks, the watermark identifies the exact user who received it.
ML-DSA-87
FIPS 204
16 active users
Watermarks issued
247
Signed payloads in the ledger
Leaks detected
3
Traced to a named recipient
Users tracked
18
16 currently active
Documents protected
89
Registered and fingerprinted
Watermarking modes
T
Text watermarking
Zero width Unicode characters and homoglyph substitutions carry a per user identifier inside the text. The watermarked copy reads identically to the original.
Try it →I
Image watermarking
Block luminance steganography places the payload in the brightness of 8x8 pixel blocks, with Reed Solomon parity and three redundant copies. The result is visually indistinguishable, and the mark survives a JPEG round trip.
Try it →D
Leak detection
Paste a suspected leaked document and QMark extracts the embedded watermark, names the recipient, and reconciles the match against the issuance ledger.
Try it →Recent activity
| Timestamp | Event | User | Document |
|---|---|---|---|
| 2026-08-26 05:51 UTC | WATERMARK_ISSUED | Sarah Kim sarah.kim@fnbank.com |
Board_Cyber_Briefing_Aug.pptx |
| 2026-08-25 03:15 UTC | LEAK_DETECTED | Michael Torres michael.torres@fnbank.com |
FNB_Compliance_Audit_2025.xlsx |
| 2026-08-25 01:10 UTC | DOCUMENT_REGISTERED | Maria Santos maria.santos@fnbank.com |
Vendor_Risk_Matrix_v4.xlsx |
| 2026-08-24 05:04 UTC | WATERMARK_ISSUED | David Chen david.chen@fnbank.com |
Internal_Audit_Findings_Q2.docx |
| 2026-08-22 22:00 UTC | WATERMARK_ISSUED | Jennifer Park jennifer.park@fnbank.com |
Key_Rotation_Runbook.pdf |
| 2026-08-22 04:12 UTC | DOCUMENT_REGISTERED | Lisa Zhang lisa.zhang@fnbank.com |
Counsel_Memo_Data_Retention.docx |
| 2026-08-21 03:15 UTC | LEAK_DETECTED | Robert Walsh robert.walsh@fnbank.com |
CNSA_Migration_Roadmap.pdf |
| 2026-08-20 01:57 UTC | WATERMARK_ISSUED | Omar Haddad omar.haddad@fnbank.com |
Regulatory_Filing_Draft.pdf |