PDF Digital Signature With Date Time for SignNow
Award-winning eSignature solution
What a PDF digital signature with date and time does
A PDF digital signature with date and time is a cryptographic signature attached to a PDF that records when the document was signed and helps prove who signed it. It works by creating a hash of the file, linking that hash to the signer’s identity, and storing a timestamp in the signature record or audit trail. If the PDF changes after signing, the signature validation fails. In U.S. transactions, this supports integrity, attribution, and evidence of intent.
Why date-stamped signatures matter
A date and time stamp strengthens document evidence, speeds approvals, and reduces disputes about when a PDF was signed. Under ESIGN and UETA, an electronic signature can be enforceable when it shows signer intent and attribution, and a reliable audit trail helps support that proof in U.S. business records.
Common PDF signing issues
Missing signer authentication can weaken attribution when a PDF is challenged later. Incorrect time zones can create confusion about when the signature was completed. Editing the PDF after signing can invalidate the signature and break trust. Weak retention practices can make it harder to produce records during disputes.
Who uses signed PDFs
Business use
Teams use PDF digital signature with date time for contracts, approvals, acknowledgments, and regulated recordkeeping.
Document types
It fits lease agreements, patient forms, tax records, policy acknowledgments, and internal approvals.
People who rely on signed PDFs
A director of NetSuite operations at a large manufacturer uses signed PDFs to route approvals through ERP-connected workflows, keep timestamps aligned with document history, and reduce delays between departments. This fits teams that need structured records and consistent signer evidence across finance, operations, and customer-facing processes. A founder in real estate uses signed PDFs for leases, disclosures, and closing documents that move between mobile and desktop users. The value is faster turnaround, clearer signing records, and easier proof of completion when documents must be shared with clients, agents, lenders, or compliance reviewers.
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Core features and benefits
Signers, administrators, and compliance teams use these capabilities to keep PDF signatures organized, traceable, and easier to verify.
Document integrity
Creates a cryptographic link between the signer and the PDF, helping preserve document integrity after signing.
Timestamp record
Captures date and time details that support recordkeeping, review, and dispute resolution.
Audit history
Stores a tamper-evident history of actions, including viewing, signing, and completion events.
Mobile access
Supports mobile signing so users can complete PDFs on phones, tablets, or desktops.
Sequential routing
Helps teams route documents in order, which is useful for approvals and multi-party agreements.
Workflow control
Works with business workflows that need repeatable signing steps, templates, and consistent records.
How the signing flow works
The signing process follows a short sequence from document preparation to timestamped completion and record storage.
Prepare document: Upload the PDF and prepare signature fields. Send request: Invite the signer with identity details. Complete signing: Signer reviews, signs, and dates the PDF. Store evidence: System records the event and seals the file.
Quick setup steps
Use a simple sequence to prepare, send, and store a signed PDF with date and time evidence.
Upload file:
Upload the PDF into your signNow workspace. Add fields:
Place signature, date, and initial fields. Configure routing:
Set signer order and authentication rules. Request signature:
Send the document for signature. Save output:
Download the completed PDF and record.
Recommended workflow settings
A clear setup helps teams keep signatures attributable, time-stamped, and easier to defend in U.S. business and regulated workflows.
| Setting | Recommendation |
|---|---|
| Authentication method | SMS OTP for remote signers |
| Signature type | Digital signature with audit trail |
| Audit trail | UTC timestamps and IP logging |
| Document retention | 6 years for HIPAA records |
| Encryption | TLS 1.2/1.3 in transit, AES-256 at rest |
Platform and device support
Use a modern browser or mobile app with a secure internet connection. signNow works across Chrome, Firefox, Safari, and Edge on Windows, macOS, iOS, and Android, with TLS-protected sessions for document access and signing.
Desktop browsers Chrome, Firefox, Safari, and Edge Operating systems Windows, macOS, iOS, and Android Mobile access signNow mobile apps on iOS and Android
For enterprise deployments, managed devices, SSO, and API access help standardize signing across departments. Regulated teams should also confirm retention, authentication, and export settings before rollout so signed PDFs remain usable for audits, legal review, and internal recordkeeping.
Security and compliance controls
Transport security:
Storage encryption:
Control assurance:
Security management:
Healthcare compliance:
FDA records:
Real-world signing examples
These examples show how teams use signed PDFs to keep approvals moving while preserving evidence, timestamps, and document history.
Operations workflow
A NetSuite operations leader needed signed documents to move through connected business systems without losing record integrity.
- Kodi-Marie Evans at Xerox used signNow with NetSuite.
- Right document, right format, right signature path.
The workflow supported faster routing and clearer document control across integrated systems, which helped the team match signatures to the right records and keep approvals organized.
Real estate
A real estate founder needed mobile-friendly signing for leases and related forms while keeping compliance evidence attached to each PDF.
- Tim Martin at Martin Properties signed online and on mobile.
- Built-in security supported remote execution.
The process reduced paper handling and kept signed PDFs easier to track, store, and review, especially when documents had to move quickly between clients, agents, and internal staff.
Practical signing habits
A few consistent habits make timestamped PDF signatures easier to verify, retain, and explain during audits or disputes.
Match authentication to risk
Preplace all required fields
Set retention by record type
Store evidence together
FAQ about signed PDFs
These answers focus on plan limits, compliance requirements, and recordkeeping details that affect timestamped PDF signatures in U.S. workflows.
signNow Business starts at $8/user/mo on annual billing, and paid plans include audit trails. If you need HIPAA support, sign a BAA and confirm the workflow keeps PHI encrypted and logged.
For HIPAA workflows, signNow supports compliance when a BAA is in place. Use unique user identification, access controls, audit controls, and 6-year retention for signed records containing PHI.
If a PDF signature fails validation after editing, the file was likely changed after signing. Re-send the original PDF, because tamper-evident signatures break when the document hash no longer matches.
If the timestamp looks wrong, check the signer’s time zone and the document history. signNow audit trails record event times, and UTC-based records help reduce confusion across regions.
For FDA-regulated records, 21 CFR Part 11 requires secure audit trails, unique signer IDs, and two-component electronic signatures. signNow workflows should preserve those records and keep the signature meaning clear.
If a team needs more controlled access, the Enterprise and Site License options add advanced authentication and SSO-related capabilities. Confirm the plan before assigning regulated workflows or API-based routing.
Vendor comparison for signed PDFs
The table compares core signing and compliance features across leading vendors using verified pricing and feature limits where available.
| signNow | DocuSign | Adobe Sign | PandaDoc |
|---|---|---|---|
| Audit trail | Yes | Yes | Yes |
| ESIGN and UETA | Yes | Yes | Yes |
| Starting price | $8/user/mo | $15/user/mo | $14/user/mo |
| Free trial | 7-day trial | Not verified | Not verified |
| Envelope cap | No cap | 100 envelopes/year | Not verified |
Rollout and retention timeline
This timeline combines rollout milestones with retention and policy facts that affect timestamped PDF signatures in U.S. workflows.
Day 0:
Day 1:
Week 1:
7-day trial:
HIPAA retention:
Part 11 records:
UETA coverage:
Annual billing:
Risks of poor signature handling
Weak attribution
Missing BAA
Post-sign edits
Poor logging
What the audit trail records
The audit trail captures the technical evidence that supports attribution, timing, and document integrity after signing.
Signer authentication:
Timestamp capture:
Document hashing:
Tamper-evident sealing:
Audit storage:
Trail export:
Pricing and plan features
The pricing snapshot uses verified entry-tier figures and plan notes for annual billing across major vendors.
| signNow | DocuSign | Adobe Sign | PandaDoc | HelloSign | |
|---|---|---|---|---|---|
| Starting price | $8/user/mo annual | $15/user/mo annual | $14/user/mo annual | $19/user/mo annual | $15/user/mo annual |
| Free trial | 7 days | Not verified | Not verified | Not verified | Not verified |
| Bulk send | Business Premium | Not verified | Not verified | Not verified | Not verified |
| Audit trail | Included | Included | Included | Included | Included |
| Envelope cap | No cap | 100/user/year | Not verified | Not verified | Not verified |
Key performance indicators that demonstrate SignNow's proven track record.