Upload a signed PDF and get a complete cryptographic report — signer identity, certificate chain, timestamp, tamper detection, and CA trust level.
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We have discontinued web support for eSign verification.
Please download the SigVerify app from the Google Play Store to continue verifying documents.
Everything citizens, businesses, and developers need to know about legally valid electronic signatures, trusted CAs, and the difference between a scanned signature and a real cryptographic one.
| Feature | Wet Ink | Scanned / Image | Drawn on Screen | OTP / Click-Sign | Aadhaar eSign / DSC |
|---|---|---|---|---|---|
| IT Act 2000 — Valid | ✓ Yes | ✗ No | ✗ No | ⚠ Limited | ✓ Yes |
| Tamper-Evident | ✗ No | ✗ No | ✗ No | ⚠ Partial | ✓ Yes |
| Identity Verified | ⚠ Physical | ✗ No | ✗ No | ⚠ Phone/Email | ✓ Govt. ID |
| Court Admissible | ✓ Yes | ✗ Generally no | ✗ Generally no | ⚠ Case-dependent | ✓ Yes |
| Crypto Verifiable | ✗ No | ✗ No | ✗ No | ✗ No | ✓ Yes |
| CA Backed | ✗ No | ✗ No | ✗ No | ✗ No | ✓ Yes |
Defines digital and electronic signatures using asymmetric cryptography, including Aadhaar-based eSign.
An electronic record authenticated by a valid digital signature has the same legal force as a signed paper document.
In legal proceedings, a valid digital signature is presumed to be that of the subscriber. The other party must disprove it.
Primary issuer for Aadhaar OTP and biometric eSign. Issues short-lived (~30 min) session certificates via C-DAC Sub CA.
India's largest commercial CA. Issues Class 2 and Class 3 DSCs. Empanelled as Aadhaar eSign ASP under UIDAI.
Issues DSCs tied to PAN database. Popular for income tax, ROC/MCA filings. NSDL eSIGN provides Aadhaar-based eSign.
Long-standing CCA-licensed CA. Issues Class 3 certificates for individuals, organizations, and government departments.
Class 3 DSCs including DGFT and Document Signer certs. Widely used for customs, import/export, and corporate filings.