Digital Signature API
Add HSM-backed digital signatures to your platform. Register signers, sign documents, and validate signatures, all through a simple REST API.
RESTful API
Modern REST API for digital signatures. Register signers, sign documents, and validate signatures programmatically.
Fast Integration
Go live in days. OpenAPI documentation and sandbox environment for rapid development.
HSM-Backed Security
Private keys stored in hardware security modules. Never extracted, never exposed. FIPS 140-2 Level 3 compliant.
Multiple Formats
Sign JSON documents, raw hashes, or PDFs. Every signature includes a full audit trail with timestamps.
Simple Endpoints
Register signers, sign documents, validate signatures
Signer Registration
Register practitioners with a single API call. Key pairs are generated and stored securely in hardware, ready to sign immediately.
Document Signing
Sign JSON objects, pre-computed hashes, or PDF files. Standard PKCS#7 signatures with full metadata including certId, timestamp, and document hash.
Signature Validation
Verify any signature against the certificate chain. Returns detailed validation results including certificate status, integrity checks, and warnings.
Quick Integration
Standard REST API with API key authentication. Sign any document type with a single HTTP request.
Deployment Options
Choose the deployment model that fits your organization
Shared Platform
Managed signing infrastructure with isolated key storage. Start signing in minutes with your own private certificate authority.
- Managed infrastructure
- Isolated HSM key storage
- Private certificate authority
- Full audit trail
- Ideal for fast go-live
Dedicated Deployment
Your own eSign server with globally trusted certificates. Signatures are automatically recognized in Adobe Reader, macOS, Windows, and all major platforms.
- Dedicated server instance
- Globally trusted certificates
- Zero configuration for end users
- Custom domain & branding
Ready to Integrate Digital Signatures?
Get API credentials, explore the documentation, and start signing documents today.