IUSign vs DocuSign
for Cryptographic Audit Integrity
DocuSign stores audit logs you must trust. IUSign gives you a SHA-256 hash chain you can verify independently.
Why IUSign is Different
Cryptographic Audit Integrity
Immutable audit logs with BEFORE UPDATE/DELETE triggers; SHA-256 chain where each entry proves the integrity of all previous entries.
Admin tampering protection
DB triggers block UPDATE/DELETE
Independent verification
Verify hash chain yourself
Litigation hold
litigation_hold flag + enforcement
Multi-tenant isolation
tenant_id on every query
DocuSign Approach
Audit logs can be modified by admin users; no cryptographic proof of event sequence; vendor-controlled trust model.
- Download signed PDF from DocuSign
- Trust DocuSign's audit log screenshot
- No way to cryptographically verify the log itself
IUSign Approach
Immutable audit logs with BEFORE UPDATE/DELETE triggers.
- Download signed PDF + Certificate of Completion
- Verify SHA-256 chain hash independently
- Each audit entry cryptographically links to the previous
Result
In court, cryptographic proof beats 'trust us' every time.
Head-to-Head Comparison
Why IUSign is the preferred choice for enterprise scalability.
| Feature | IUSign | DocuSign |
|---|---|---|
| Audit log integrity | SHA-256 hash chain (crypto-proven) | Admin-editable (trust-based) |
| Admin tampering protection | ✅ DB triggers block UPDATE/DELETE | ❌ No protection |
| Independent verification | ✅ Verify hash chain yourself | ❌ Vendor-only logs |
| Litigation hold | ✅ litigation_hold flag + enforcement | ⚠️ Manual process |
| Multi-tenant isolation | ✅ tenant_id on every query | ⚠️ Shared database |
Frequently Asked Questions
What if someone alters the PDF after signing?
Our audit_logs table uses chain_hash = SHA256(prev_hash + content). If the PDF changes, the hash won't match. We include the final hash in the Certificate of Completion.
Can an IUSign admin hide fraud by deleting audit logs?
No. We've implemented BEFORE UPDATE/DELETE triggers on the audit_logs table at the database level. Even with direct SQL access, logs cannot be modified or deleted.
Is this as legally defensible as DocuSign?
Yes. ESIGN and eIDAS require proof of integrity. A SHA-256 hash chain provides stronger mathematical proof than a vendor-controlled audit log.
Ready to see the difference?
Stop paying for manual work and start automating your document logistics with IUSign.