Launching today
Message to 2050
Write today. Nobody can open it until 2050, not even us.
4 followers
Write today. Nobody can open it until 2050, not even us.
4 followers
A digital time capsule. Write a letter to someone you love and it's sealed with timelock encryption until January 1, 2050. The key doesn't exist yet: a global network of institutions (drand / League of Entropy) will create it that day. On Dec 31 the capsule closes in a "Midnight Wave" around the planet. English, Spanish and Portuguese.
Hi Product Hunt! I'm Carlos from Santiago, Chile. After surviving an illness I wanted to leave my son a letter he can only read as an adult, and I didn't want anyone, including me, to be able to open it early.
How it works: the letter is encrypted in your browser with tlock (timelock encryption) against the drand round for January 1, 2050 at 00:00 in your time zone. The key is the signature the League of Entropy network (Cloudflare, EPFL, University of Chile, among others) will publish for that round. Until then, the key doesn't exist.
On December 31, 2026 the capsule closes following midnight around the world, time zone by time zone: the Midnight Wave. In 2050 the letters open the same way.
We never see the text. Each letter's fingerprint is anchored on a public blockchain, the encrypted file is stored permanently, and you can download it and open it with open-source tools even if we disappear. US$1.99 per letter.
The honest caveat: it depends on drand still running in 2050. I'd love your feedback on that risk and on the idea. Who would you write to?
How does the person I write to find out the letter exists, and get it in 2050? An email address from today might be dead by then.
Great question, Adam — that's the hardest part, more than the crypto.
A few layers, so it doesn't depend on one email:
The recipient gets a personal link, and the certificate (printable PDF) includes a rescue code. You can print it and put it in a drawer, a will, a baby book.
Emails can be updated anytime — yours, the recipient's, and an optional guardian's (a second person who also gets notified).
Every January from 2027 to 2049 we send a reminder asking everyone to keep their emails current.
You can tell them now ("notify now") or keep it a surprise until 2050.
And if everything fails, you can download the encrypted file yourself and it opens in 2050 with open-source tlock tools, no server of ours needed.
Still, 24 years is long. If you have ideas for making delivery more robust, I'm all ears.