SignerAuthority

Secure Electronic Document Signing & Verification

Cryptographically signed. Fully audited. Legally binding.

Everything you need to sign with confidence

No downloads. No complicated setup. Just send, sign, and verify.

Cryptographic Security

Every document is protected with SHA-256 content hashing and HMAC-SHA256 signatures. Tampering is mathematically impossible.

Multi-Signer Support

Add as many signers as you need. Each signer receives a unique link and signs independently with their own audit record.

Full Audit Trail

Every action is logged with IP address, user agent, and timestamp. Download a complete audit certificate with your signed PDF.

How it works

1
Create

Write or paste your document and add signers by name and email.

2
Send

Signers receive a unique link via email. No account required to sign.

3
Sign

Signers type, draw, or upload their signature and give electronic consent.

4
Download

Get a signed PDF with embedded signatures, audit trail, and verification certificate.

Built for trust

MIR Reputation Tracking

Link your account to My Internet Reputation to build a verified participation history across platforms.

MIR Assertions

Every completed document is registered with a cryptographic assertion on the MIR network, providing independent proof of existence.

API Access

Integrate signing into your own applications with our REST API. Generate API keys from your account page.

Zero PII Sharing

We will never sell, rent, or share your personal information with any third party. Your data is yours alone.

Verification Certificate
Document ID
a3f8c1d2e5b7...
Content Hash (SHA-256)
9f86d081884c7d659a2feaa0c55ad015...
Signature (HMAC-SHA256)
b7a8e2c4f1d3...
Status
Verified — document is authentic and unmodified

Ready to start signing?

Create your free account and send your first document in minutes.

3 free documents per month. No credit card required.