Now accepting early access signups

Seal your creation.
Prove it's yours.

Sigiliu creates legally defensible, cryptographic proof of ownership for any digital asset. Upload. Seal. Verify. Forever.

You're in. We'll notify you at launch.

Founding members lock in €5/month for life. No spam.

Live demo

See the sealing process in real-time

Click to seal a file

brand_identity_v4.fig — 3.1 MB

How it works

Three steps. Sixty seconds. Sealed forever.

Upload

Drag any file — designs, documents, code, video. Up to 500MB. Your file never leaves your control.

Seal

SHA-256 hash + RFC 3161 timestamp from a trusted authority. Cryptographic proof, signed and immutable.

Verify

Get a unique public URL and PDF certificate. Anyone can verify your ownership — now and forever.

Features

The digital seal for creators who mean business

Instant seal

Upload any file. Get a cryptographic timestamp in seconds. SHA-256 hashing with RFC 3161 legal-grade authority.

Court-ready proof

Timestamps from DigiCert — on the Adobe Approved Trust List. Designed for EU eIDAS and US Federal Rules of Evidence.

Public verification

Every seal gets a unique URL. Anyone can independently verify your ownership by uploading the same file.

Content monitoring

AI-powered scanning detects unauthorized reuse across the web. Automated alerts when your work appears elsewhere.

Digital certificates

Beautiful PDF certificates with QR codes, chain-of-custody metadata, and tamper-proof verification.

API & plugins

Embed Sigiliu into your workflow. WordPress, Shopify plugins. REST API with JavaScript and Python SDKs.

Pricing

Protect your work at any scale

Monthly

Annual -33%

Free

€0

5 seals / month

SHA-256 hash

Web verification

Email certificate

Seal your creation.Prove it's yours.