Write a message to someone you love. We encrypt it inside your browser, carve it permanently onto Bitcoin, and deliver a beautiful pressed-paper card with the key inside.
Closed when you stop logging in. Deleted when companies fold.
Shut down on a corporate timetable that has nothing to do with you.
Mechanical things fail. Files corrupt. Backups go missing.
Burns. Floods. Yellows. Gets thrown away by people who didn't know.
Change rules. Change owners. Change what your words are allowed to say.
Decentralized. Replicated across thousands of nodes. Practically permanent.
Every step happens in the right place. Your words stay private in your browser. Only the encrypted ciphertext travels onward.
Compose your letter in our editor. The text never leaves your device.
Your browser encrypts the message. We see only ciphertext.
The ciphertext is inscribed onto Bitcoin, where it lives forever.
We press a beautiful card with the key, QR, and recovery code inside.
The recipient scans, enters the key, and reads — privately, in their browser.
A permanent private letter, beautifully delivered.
For dates that deserve ceremony.
A wedding-quality keepsake.
Without the key, this is meaningless to anyone who finds it.
No. Your message is encrypted inside your browser before anything is sent to us. We only ever see encrypted ciphertext — even if we wanted to, we couldn't read it. The decryption key is printed inside the physical card, never stored on our servers.
A small block of encrypted ciphertext — meaningless to anyone without the key. It's inscribed using Bitcoin's ordinals protocol, which writes data permanently into the blockchain.
Your letter doesn't depend on us. The encrypted message lives on Bitcoin and the key lives on your card. Our open-source recovery tool lets anyone decrypt the message without contacting Eternalink.
Never. You pay once, and the letter is preserved forever. Bitcoin's persistence is paid for at the moment of inscription, not by ongoing fees to us.
If both the recovery key and the QR code are lost, the message cannot be recovered — by us or anyone. The privacy guarantee that protects you also means we cannot rescue you. Treat the card like a wedding ring.
No. Permanence is the point. Once a message is inscribed onto Bitcoin, it cannot be edited or removed. Take your time before you confirm.