The Heirloom · A letter carved into Bitcoin

We built our own way to write love onto Bitcoin.

Most things that claim to live on a blockchain are really just a link to a server that can vanish.

We wanted the words themselves to last. So we wrote our own inscription protocol from scratch. No third-party Ordinals service taking a cut. No middleman who could quietly fold and take your letter with them.

Your encrypted letter gets embedded directly into a Bitcoin transaction. Once it confirms, it is part of the timechain. Permanent. Public as ciphertext, unreadable without your phrase.

Self-authored protocol Open source Zero service dependency

witness_envelope.bin

// embedded inside the Bitcoin reveal tx marker = "amorseal" version = 0x01 payload = AS01.encrypted sha256 = e9b4a2… // recoverable by anyone with: // 1. the transaction id // 2. the opening phrase // 3. the open-source tool

What you're actually buying

Four layers, and why each one matters.

A forever promise is only as strong as its weakest link. Here is every link, and how we made sure none of them depend on us still being here.

Encrypted in your browser

The words never reach our server in the clear.

You write the letter on your own device. It is encrypted right there, before anything is sent. We only ever receive ciphertext, which is a sealed envelope we cannot open. Even we cannot read your letter.

Sealed onto Bitcoin

The encrypted letter becomes part of the timechain.

We inscribe the ciphertext directly into a Bitcoin transaction using our own protocol. Once it confirms, it exists on every copy of the Bitcoin ledger on Earth. There is no database to delete, no account to close, no server bill to stop paying.

This is what "permanent" actually means here. Not "we promise to keep it." It is physically out of our hands.

Opened with one phrase

Six words are the only key that ever unlocks it.

The letter can only be decrypted with a private opening phrase. It is generated once, shown to you once, and never stored by us. You give it to the one person meant to read the letter. Without it, the ciphertext on Bitcoin stays sealed for good. With it, it opens anywhere, anytime.

Recoverable without us · open source

The tool that opens it belongs to the world, not to us.

This is the layer most "forever" products quietly skip. If our decryption method were a company secret, then the day we shut down, every letter would become unreadable noise. So we made the protocol open source. The format, the math, the recovery tool. All public. Anyone, forever, can take the transaction off Bitcoin plus the phrase and read the letter, with no help from Amor Seal.

If we vanish tomorrow, your letter still opens. That is the whole point.

Sealed the moment you order

Permanence can't wait for the delivery date.

Say you write an Heirloom for your daughter to open on her 30th birthday. Twenty years from now.

We do not wait twenty years to put it on Bitcoin. We seal it now, within a week of your order. Because the promise is permanence from the moment you press send, and honestly, none of us can promise we'll be here in twenty years to do it later.

The sealing happens once, immediately, and lasts forever. Only the delivery, which is the email with the link, gets scheduled for the day you chose. The letter has been safe on Bitcoin the entire time.

SEALED ON ORDER · DELIVERED ON YOUR DATE · OPENABLE FOREVER

Attach it to any moment

Four ways to bend time around a letter.

Choose when it arrives. Choose when it can be opened. They can be the same instant, or decades apart. Every occasion fits one of these.

Arrives now → Opens now

Say it today. Make it permanent.

The link arrives immediately and opens immediately. But unlike an ordinary message, this one is carved into Bitcoin forever. A thing said once, kept always.

Example · a vow "I am marrying you next spring. I want the first version of this promise to outlive us both. Read it now, and know it can never be edited, walked back, or lost."

Example · the truth, finally said "I have wanted to tell you this for ten years. Today is the day. I am not taking it back, ever, even after I'm gone."

Arrives now → Opens later

Send it today. Let them wait for it.

The link arrives now, so they know something is coming. A countdown ticks until the day it unlocks. The anticipation becomes part of the gift.

Example · an anniversary "Here is a sealed letter. You can see it counting down. It opens on our tenth anniversary, three years from the day I gave it to you. No peeking."

Example · proposal week "A letter that opens the morning after she says yes. Hand it to her the day you propose, with the date already set."

Arrives later → Opens at once

Nothing. Until the day it simply appears.

No link, no hint, no countdown. Then on the date you chose, the letter arrives already open, ready to read that very moment. A complete surprise out of the quiet.

Example · a milestone "He has no idea this exists. On the morning he turns 30, an email arrives from someone he lost years ago, and it opens the instant he taps it."

Example · a Christmas she won't see coming "Three quiet years, then a letter from grandma in her inbox on Christmas Day. Open the moment she sees it."

Arrives later → Opens even later

A letter that announces itself. Then waits again.

The link arrives on one future date, so they learn a letter is waiting. Then a second countdown runs until it finally opens. Two moments of anticipation, years apart.

Example · coming of age "On her 18th birthday she learns a letter from her grandmother is waiting for her. On her 21st, it opens. Grandma sealed it the year she was born."

Example · a letter on retirement, opened by a grandchild "On the day he retires, he learns his late father left him one more letter. It opens five years later, the morning his first grandchild is born."

Start to forever

How an Heirloom is made.

STEP 01

Write & design

Write your letter, design the card. Encrypted on your device before anything leaves it.

STEP 02

Choose the timing

Pick when it arrives, pick when it can open. Anywhere from this instant to decades away.

STEP 03

We seal it onto Bitcoin

Within a week, your encrypted letter is carefully inscribed and verified by hand. You get the on-chain reference.

STEP 04

You hold the keys

You receive a recovery kit. The phrase, the transaction, the open tool. Enough to open it forever, with or without us.

Don't trust us. Verify us.

A promise of "forever" from a small company is worth almost nothing on its own. Companies fold. Servers go dark. So we built The Heirloom to not need our survival at all.

The protocol is open source. The recovery tool runs entirely in your browser, talking only to public Bitcoin data. Never to us. You can read exactly how the sealing and opening work, and confirm for yourself that the letter truly lives on Bitcoin and truly opens without our help.

The inscription and decryption protocol is published openly.
The recovery tool is client side. It never sends your phrase anywhere.
Your letter's ciphertext lives on Bitcoin, readable by any explorer.
If Amor Seal disappears, nothing about your letter changes.

the open recovery tool

Recover any Heirloom independently.

Your letter is sealed onto Bitcoin, not stored on our servers. To open it you need two things: your opening phrase and the letter's transaction. With those, anyone can recover the letter using the free, open-source AS01 tool, even if Amor Seal no longer exists.

github.com/amorseal/AS01 View source & recovery tool on GitHub

Yours from day one

The recovery kit you keep forever.

The moment your letter is sealed, you receive everything needed to open it independently. No matter what happens to us, or to the delivery you scheduled years from now.

Heirloom Recovery Kit

Save it somewhere safe. This is the master key.

Opening phrase: lanternharborvelvetrapidcopperbloom
Bitcoin record: <pending first real mainnet seal>
Recovery tool: github.com/amorseal/AS01
How to open: Keep the phrase and the transaction. Anyone can use the free, open-source AS01 tool to recover the letter on any computer, even if Amor Seal no longer exists.

"As long as Bitcoin runs and you hold these words, the letter can be read. By you, by them, by anyone you trust to keep it."

A letter that outlasts
everyone who reads it.