Parents. A letter to your kid that unlocks on their 18th birthday. Or their wedding day. Or the day they have their own kid.
Time Capsules
Most time capsules get lost, forgotten, or never opened. Tower capsules unlock themselves and email you.
Bury a message — $10Parents. A letter to your kid that unlocks on their 18th birthday. Or their wedding day. Or the day they have their own kid.
Couples. A note to your partner for your 25th anniversary. Or your retirement. Or after a milestone you’ve been working toward together.
Yourself, ten years out. What were you certain of in 2026? Read it in 2036 and see what survived.
Founders + builders. “If we’re still doing this in five years, here’s what we should remember about why we started.”
Therapists + patients. A trigger document that unlocks only if a specific date is reached — useful for boundary documentation or future-self letters.
1. Sign in with your email.
2. Write your message. Pick the Time Capsule tier ($10). Choose an unlock date — tomorrow, ten years out, a specific anniversary.
3. The hash is anchored to Bitcoin immediately. The content sits hidden on your dashboard until the unlock date.
4. The moment the unlock date passes, we email you a link. The content reveals itself. The Bitcoin block is the proof that you wrote it back then.
A Google Doc can be edited at any moment, by anyone with access, and the “Created” timestamp can’t be independently verified. A Tower capsule is hashed and committed to the Bitcoin blockchain the moment you carve it. Decades from now, the receipt proves — with no need to trust The Tower, Google, or anyone else — that you wrote those exact words on that exact day.
$10 per Time Capsule. Auto-unlocks. Auto-emails. Forever-anchored.