Your crypto survives.Your family thrives.

where your keys stay yours

Non-custodial crypto inheritance built on Safe. Name your heirs by wallet, check in when you like, and let people you trust confirm the rest.

Get early accessHow it works
scroll to begin ↓
A life you're buildingchapter 01 · home↓
non-custodial · built on safe

You measure the years in pencil marks.

And you build: ETH, stablecoins, the stocks that now live onchain. All of it stays in your own Safe. 0xWills is a module on top of it: we never hold your keys or your funds.

your safe
0x7a3…f19 · yours alone
enableModule(WillModule) ✓
ETHUSDCtokenized stocks
A question nobody asksuntil it's too late↓

What happens to your crypto when you're gone?

is your crypto even safe after you?

Most plans fail. One way or another.

Writing your seed phrase into a will, or trusting an exchange to sort it out, both break in ways your family only discovers when it's too late.

Seed phrase in a drawer

Whoever finds the 24 words owns everything, today, while you're still alive. Lose them, and nobody does.

risky now · lost later

Leave it on an exchange

Not your keys. Accounts get frozen, probate takes months, and your family needs paperwork they may never find.

custodial · slow

0xWills

Assets stay in your Safe. Heirs are named by wallet, people you trust confirm, and a dispute window protects you from mistakes.

non-custodial · verified
Meet Armaanchapter 02 · the plan↓
dad · builder · hodler

Meet Armaan.

Father of Maya. Eight years onchain. Like most of us, he never planned for the day he isn't here.

once a month · one tap

Check in.

That's the whole routine. One tap from his wallet keeps the plan asleep. Miss it, and he gets reminders long before anything happens.

non-custodial

His Safe.

Everything stays in his own Safe. 0xWills is a module on top: it can only ever pay the heirs he named, in the shares he set.

people he trusts

Verifiers.

His sister and his lawyer each hold a key. If he ever goes quiet, they confirm what happened. Two of three must agree.

nothing moves yet

Then, silence.

One month the check-in doesn't come. His verifiers confirm, a dispute window opens, and a single check-in from him would cancel everything.

check-in
Checked in · Mar 2041
CheckedIn(safe: 0x7a3…f19)
verifiers
Sara (sister) · J. Malik (lawyer)
threshold 2 of 3
dispute window
7 days left · one check-in cancels it
Then, a letterchapter 03 · the heir↓
her wallet, named years ago

A letter for Maya.

Years ago her father named her wallet as his heir. When the dispute window closes, her share is waiting, and only that wallet can claim it.

exactly as he wrote it

Claimed.

Her 60% arrives as he set it: ETH, tokens and tokenized stocks on Robinhood Chain. It can only go to the wallet he named. Nobody can redirect it.

notice · from 0xWills
Your father left something for you.
to: 0x4c1…e9b2 · share ready to claim
claimed
Maya received her 60%
ShareClaimed · tx 0x91f…a07
chapter 04 · what remains

Leave them more than a door frame.

Years later, Maya measures her son Leo against the same old frame. What Armaan built kept going, the way he wanted.

Get early accessHow it works
how it works

Set it up once. Live your life.

About ten minutes, from a Safe you already own or one we help you create.

01

Connect your Safe

Use the Safe you already have, or create one. Enabling 0xWills is one transaction you sign.

02

Name your people

Add heirs by wallet address, with the share each one receives. Shares always add up to 100%.

03

Choose who confirms

Pick trusted verifiers, how many must agree, how often you check in, and how long the dispute window lasts.

04

Check in, now and then

One tap from your wallet. Miss one, and you'll be reminded long before anything happens.

why families can trust it

Nothing moves while you're here.

Designed so the worst case is "nothing happens", never "the wrong person gets paid".

your keys

Your keys stay yours

Assets live in your Safe. We never see a seed phrase and can't move your funds. The module can only pay the heirs you named, in the shares you set.

check-in

A check-in beats everything

Missed check-ins alone do nothing. Verifiers must confirm, a dispute window runs, and one check-in from you at any point cancels it all.

heirs

Paid only to named wallets

Each heir is a wallet address you choose. Their share can only be claimed to that address, so nobody can redirect it.

code

Open, tested code

The inheritance contract is tested against a real Safe, including randomized tests.

assets

Crypto and stocks, together

Built first for Robinhood Chain, where Safe is live and stocks are tokens, so a portfolio passes on alongside ETH and stablecoins.

control

Change it any time

Update heirs, shares, verifiers or timing whenever you like. Only your Safe can change your plan.

under the hood

A Safe module, not a new wallet.

The whole promise fits in a few rules the contract enforces, straight from WillModule.sol.

  • 1 deployment serves every Safe
  • CALL only, never DELEGATECALL
  • 28 tests against a real Safe, incl. 512 fuzz runs

Source goes public on GitHub.

/// Proof of life. Any owner, one tap.
function checkIn(address safe) external {
    if (msg.sender != safe && !ISafe(safe).isOwner(msg.sender))
        revert NotAuthorized();
    w.status = Status.Active;
    w.lastCheckIn = uint64(block.timestamp);
    w.round++;  // wipes every verifier vote
}

/// Verifiers can only act once you're overdue.
function confirmDeath(address safe) external {
    if (!isVerifier[safe][msg.sender]) revert NotAuthorized();
    if (!isOverdue(safe)) revert NotOverdue();
    ...
    if (count >= w.verifierThreshold) _trigger(safe, w);
}   // → dispute window, then heirs claim
questions

The things people ask us.

What is 0xWills?

Non-custodial crypto inheritance built as a Safe module. You choose heirs, shares, verifiers and a check-in interval. Your assets stay in your own Safe while you're alive, and pass to your heirs only after a missed check-in, verifier confirmation and a dispute window.

Do you hold my keys or my funds?

No. 0xWills never sees your seed phrase and cannot move your funds. The contract can only pay the heirs you named, in the shares you set, once every condition is met.

Do my heirs need a crypto wallet?

Yes. Each heir is named by a wallet address, and their share can only ever be claimed to that wallet. You can change an heir's address whenever you like.

What if I just forget to check in?

Nothing moves. You'll get reminders, your verifiers have to confirm, and then a dispute window opens. A single check-in from you at any point before it ends cancels everything.

Which chains and assets?

0xWills runs on Robinhood Chain, where Safe is live and stocks exist as tokens. ETH and up to 20 tokens per plan are supported.

How is this better than sharing my seed phrase?

A shared seed phrase gives someone full access today, with all the risk that brings. 0xWills gives your heirs access only when verified conditions are met, and never exposes your keys. Read our guide.

What does it cost?

$119 a year, plus the network fees for the transactions you sign.

launching soon

Your crypto survives.

The app is launching soon. Get early access and be first to set up your will, from a Safe you already own or one we help you create.

Get early access