Digital Signature Public Key Private Key for SignNow
Award-winning eSignature solution
What a digital signature uses
A digital signature public key private key setup uses asymmetric cryptography to sign documents and verify them later. The signer keeps a private key to create the signature, while others use the public key to confirm identity and detect changes. In SignNow, the signing process is tied to an audit trail, timestamping, and tamper-evident records, which helps U.S. businesses show who signed, when they signed, and whether the document stayed intact.
Why it matters for U.S. businesses
Digital signature public key private key matters because it speeds approvals while preserving proof of intent, identity, and document integrity. Under ESIGN and UETA, those records are generally enforceable in U.S. business transactions when consent, attribution, and retention requirements are met.
Certificates and signer checks
Certificate binding:
PKI:
2FA:
SMS OTP:
ID verification:
Biometric review:
Best ROI. Our customers achieve an average 7x ROI within the first six months.
Scales with your use cases. From SMBs to mid-market, airSlate SignNow delivers results for businesses of all sizes.
Intuitive UI and API. Sign and send documents from your apps in minutes.
How the signing flow works
Follow the document from upload to completion, then preserve the signed file and its evidence for later review.
Prepare: Upload the document and prepare the signature fields. Send: Send it to the signer for review and consent. Sign: The signer applies the signature and any required initials. Archive: SignNow stores the completed record and audit trail.
What the SignNow audit trail records
Track the technical evidence behind a signed record, including identity checks, timestamps, integrity controls, and exportable logs.
Signer authentication:
Timestamp capture:
Document hashing:
Tamper seal:
Activity log:
Audit export:
Record retention schedule
Keep signed records according to the governing rule for each record class, then preserve audit evidence for later disputes or reviews.
6 years for HIPAA records
6 years for broker-dealer records
Keep tax records as required
Follow broker-dealer retention rules
Keep consent and audit logs
State-specific exclusions and limits
Real estate deeds
Wills
Family law
Wet-ink requirement
Privacy and disclosure pitfalls
Signed PDFs can expose personal data if redaction is skipped before routing them to outside parties. Consent capture fails when users are not told they are agreeing to electronic delivery and signing. Access control mistakes allow the wrong staff to view PHI, payroll data, or contract terms. Poor sharing practices can reveal signer names, emails, and approval history beyond intended recipients.
Business types that benefit most
Different organization sizes use SignNow differently, but all of them rely on signed records that are quicker to route and easier to keep.
Solo practitioners and small offices use digital signatures for NDAs, invoices, and client intake forms because they need fast turnaround, low overhead, and signed records that are easier to file than paper copies. Mid-market operations teams use it for HR forms, vendor contracts, and approval routing because templates, bulk sending, and mobile signing reduce repetitive work across departments and locations. Enterprise and regulated organizations use it for audit-ready workflows, role-based approvals, and retention-sensitive records because they need stronger evidence, integration depth, and controls that support internal policy and external review.
These tasks are executed by both individual contributors and centralized administrators depending on organizational policy and required controls.
Who uses this workflow
Small business
Contracts, NDAs, and invoices for small businesses that need fast turnaround and simple signer access.
Healthcare teams
Consent forms, HR packets, and medical documents for healthcare teams that need HIPAA-aware handling.
Who benefits most
Operations teams in real estate and construction often need fast turnarounds on leases, bids, and site agreements, especially when people are split between office and field locations. SignNow helps them keep signature requests moving without paper handoffs or repeated rework.},{ Healthcare administrators and compliance staff use SignNow for patient forms, consent records, and HR paperwork that must stay organized, auditable, and easier to retain under HIPAA-related policies and internal access controls. Mobile signing matters when staff and patients are not in the same place.
Pricing and feature comparison
Compare core eSignature features across leading vendors to check limits, compliance coverage, and workflow depth for U.S. business use.
| SignNow | DocuSign | Adobe Sign | PandaDoc |
|---|---|---|---|
| Audit trails included | Yes | Yes | Yes |
| Bulk send available | Yes | Yes | Yes |
| HIPAA support | Yes | Yes | Yes |
| Envelope limits | No cap | 100/year | Not verified |
| Mobile signing apps | Yes | Yes | Yes |
Best practices for record handling
Use retention, authentication, and archival practices that keep signed records usable as evidence while matching the governing rule for each document type.
Set a fixed signer order
Match authentication to risk
Archive the evidence together
Apply the correct retention rule
Pricing and plan features
Use this pricing snapshot to compare entry pricing, trial access, and core compliance features across major vendors.
| Features | SignNow | DocuSign | Adobe Sign | PandaDoc | HelloSign |
|---|---|---|---|---|---|
| Starting price | $8/user/mo | $15/user/mo | $14/user/mo | $19/user/mo | $15/user/mo |
| Free trial | 7 days | Not verified | Not verified | Not verified | Not verified |
| Bulk send | Yes | Yes | Yes | Yes | Yes |
| Audit trail | Yes | Yes | Yes | Yes | Yes |
| HIPAA compliance | Yes, BAA required | Yes, BAA required | Yes, BAA required | Not verified | Not verified |
Troubleshooting and FAQ
Review common issues around access, retention, authentication, and compliance using SignNow features and U.S. legal standards.
If a signer cannot open the document link, check whether the invitation was sent from the Business or Business Premium plan and whether email delivery was blocked. SignNow audit trails and resend tools help confirm delivery, while ESIGN and UETA still require clear intent and attribution.
If HIPAA records are involved, use a SignNow plan with a BAA and keep signed records for 6 years under 45 CFR 164.530(j)(2). Encryption at rest, access controls, and audit trails support HIPAA Security Rule expectations, but the BAA is still required.
If a PDF signature looks valid but the document changes later, the tamper-evident seal has been broken. SignNow audit trails and signed PDFs preserve hashing evidence and time stamps, which support authenticity under FRE 901 and 902 when the file stays unchanged.
If you need stronger signer proof, use SMS OTP or ID verification instead of email-only signing. SignNow supports layered authentication, and higher-assurance methods align better with NIST AAL2-style expectations for sensitive transactions, including healthcare, finance, and government workflows.
If a team member cannot send from a shared account, review role and permission settings in SignNow. Admin controls, delegated sending, and shared templates help separate creation, approval, and signature authority without exposing credentials or weakening the audit trail.
If a regulated workflow needs Part 11 controls, verify that your plan includes the needed authentication and record-keeping. SignNow supports 21 CFR Part 11 features such as audit history, timestamps, and access controls, but validation remains your organization’s responsibility.
Key performance indicators that demonstrate SignNow's proven track record.