AETERNA — Preserve What Matters for the Future

Hello, Product Hunt community! 👋

Today, we'd like to introduce AETERNA — a non-custodial digital time capsule protocol built to help people preserve meaningful moments and share them with the future.

Imagine sealing a photo, video, document, or personal message today and making it accessible at a chosen time in the future.

That's what AETERNA makes possible.

Privacy by design

Privacy is at the core of AETERNA:

• Content is encrypted in the creator's browser using AES-256-GCM before upload.

• Encrypted capsule data is stored through Irys, with Arweave as the underlying storage layer.

• The app checks trusted UTC time before allowing a capsule to open.

• Content is decrypted locally in the recipient's browser.

• Recipients don't need an account or a crypto wallet — only the private capsule link.

Our first public demonstration

We've already sealed our first public time capsule. It contains a message for the future, created to let people experience the idea behind AETERNA rather than simply read about it.

This is the beginning of our journey.

We're continuing to test, improve, and develop AETERNA, with the long-term goal of making digital time capsules accessible to more people.

We'd be grateful for feedback, questions, and ideas from the Product Hunt community.

🌐 Explore AETERNA:
https://aeternacapsule.com

One question for you:

What would you choose to preserve today so that someone could discover it in the future?

AETERNA — Preserve what matters. For the future.