Certify Your Documents.
Without Enterprise Pricing.

Expensive by default

Leading platforms charge per-seat or per-document fees that add up fast for small teams and freelancers.

Overkill complexity

Most tools bundle e-signing workflows, compliance reports, and audit trails you simply don't need.

All you actually need

Proof that a file existed at a point in time, a verifiable record, and a QR anyone can scan to confirm integrity.

Upload your signed PDF

Drop in any PDF. Sigillum accepts it via a secure, token-protected endpoint.

QR code embedded automatically

A unique verification QR is stamped onto every page before the file is stored.

BLAKE3 hash recorded

The cryptographic fingerprint of the final file is saved alongside the record.

Anyone can verify authenticity

Scan the QR or share the link — anyone can confirm the file is unchanged.

Immutable Records

Documents are never overwritten. Every code maps to exactly one file forever.

QR on Every Page

Built-in QR code links back to the public verification page for document integrity verification.

BLAKE3 Integrity

Hash of the stamped file is stored. Any modification is immediately detectable.

Self-Host Friendly

Run this self-hosted document certification system on your own machine, VPS, or server.

Token-Gated Upload

Only authorised holders of the admin token can register new documents.

No Vendor Lock-in

Open codebase, SQLite storage, local filesystem. Your data stays yours.

Plain Files

• ✗No integrity proof
• ✗Can be modified silently
• ✗No verification history
• ✗No public authenticity link

Suitable only for fully trusted parties.

Sigillum

• ✓QR verification embedded in every page
• ✓Cryptographic file integrity proof
• ✓Public verification page per document
• ✓Self-hostable, low-cost, open source
• ✓Simple workflow for individuals or teams

Ideal when you've already signed manually and need proof of authenticity.

Enterprise Platforms

• ✓Legally certified e-signature workflows
• ✓Compliance and audit trails
• ✗Subscription pricing per seat
• ✗Onboarding and vendor dependency
• ✗Designed for regulated corporate use

Best when legal e-signature compliance is a hard requirement.

Self-Hosted

$0

forever

• ✓Full source code
• ✓Run on any server
• ✓Your storage, your files
• ✓No subscription ever

Personal Server

~$5/mo

hosting only

• ✓Deploy to a VPS
• ✓Control your own data
• ✓Custom domain support
• ✓Pay only for infra

Enterprise Tools

$$$+

per seat / per year

• Complex onboarding
• Vendor-controlled access
• Annual contract required
• Features you don't use

“I needed to prove the file existed at that exact moment before signing the contract. Sigillum handled it in minutes.”

— Freelance Designer

“Finally a document registry that doesn't require a corporate procurement process just to certify one file.”

— Independent Consultant

“Perfect for internal approvals and contractor submissions. We self-host it on a $5 VPS.”

— Operations Lead, Small Agency