capsl — Digital Time Capsules
Seal a message for your future self, a friend, or the public. Unlocks at a chosen date — or only with a password. End-to-end encrypted with VetKeys IBE on the Internet Computer.
What you can seal
- A letter to your future self — locked to your next birthday, anniversary, or a decade from now.
- A public prediction — publish a call and let the world watch it unlock. Receipts, timestamped.
- A time-locked gift — a voice note for their 18th, a song for your anniversary. Landing exactly when it should.
How it works
Every capsule is encrypted in your browser using Identity-Based Encryption (VetKeys) before it reaches capsl, which stores the ciphertext and opens nothing before the moment you set: a timestamp, a recipient Internet Identity, or a password you share. A decryption key is derived only once that condition is met, and it comes back encrypted under a transport key that only your browser holds.
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