Secure Ledger Registry
Verify a Digital Signature Online
Verify the authenticity and absolute tamperproof seal of any TrueMarke PDF. Simply drag and drop your sealed document.
Drag & Drop Sealed PDF
or click to browse local files
Please upload the PDF.Every pixel is secured
Our cryptographic engine computes a high-fidelity SHA-256 document fingerprint. This ensures absolute tamper-proofing: even a single modified pixel will instantly invalidate the cryptographically sealed ledger.