The inheritance add-on for the wallet you already own

Don’t let your keys die with you.

Self-custody is freedom — until something happens to you. StillWith adds guarded, time-locked inheritance — live on testnet today — to the wallet you already own, so your family can recover what’s yours, and the memories you leave with it, without you ever handing over a key.

EIP-7702 add-on · same address · revocable anytime · Ethereum Sepolia testnet
or see the live demo →
Self-custody — we never hold your keysOpen-sourcing before mainnetIndependent audit before mainnetTestnet preview

Three protections. One add-on.

The guardian engine guards the wallet you already own — across your whole life, and after it.

Proven in testnet

Pass it on

Your assets reach the people you love when you’re gone — guardian-confirmed and time-locked, never while you’re still here.

Coming

Get back in

Lose your keys and your guardians help you recover the same wallet — no seed phrase, no permanent lockout.

Coming

Can’t be drained

Transfers to unknown spenders or above your limit are blocked or time-locked — so a phishing link or drainer can’t empty you.

All on the wallet you already own — same address, your keys. Every protection is revocable, and we never hold a key.

How the add-on works

1

Installs in ~2 minutes

An EIP-7702 delegation on the wallet you already own — same address, no asset migration, your day-to-day signing unchanged. On testnet today.

2

Set your guardians & rules

Choose your guardian set, threshold, and timelock — then turn on inheritance, recovery, and spend limits.

3

It protects you, on your terms

Every action is gated and time-locked. You can veto while you’re here, and revoke the whole add-on anytime.

Inheritance that respects self-custody

No single point of failure

One key can’t move it

Recovery requires your chosen guardians above a threshold. A single compromised key gets nowhere.

Never instant

A window you control

Every recovery sits behind a timelock you can veto. A wrong or malicious attempt is always cancellable.

Your custody

You never hand over a key

The add-on can’t sign for you. Day-to-day, nothing changes — and you can remove it anytime.

For your heirs

No seed phrase to lose

Heirs recover with a passkey on their own device — nothing to misplace, nothing to phish.

And not just your keys — your memory, too

When the add-on hands your wallet to the people you love, it will carry more than coins — a message, a video, the little things that made you you. Money and meaning, in one handoff. (Coming with the full product.)

see the full memory vault →

What makes us different

No new wallet. Ever.

Others make you migrate your funds into their app. We install into the wallet you already own — same address, your keys, about two minutes.

We never touch your keys.

Many “inheritance” tools take custody — a single honeypot between you and your money. We never hold your keys and can’t move a cent by design. Fully self-custodial, always.

Money and meaning.

Some pass on assets coldly; others save only memories. We carry both — your crypto and your words — delivered to the right person at the right moment.

Why not just use a hardware wallet or multisig?

A hardware wallet
Protects your keys while you’re here — but if you’re gone, the device is just a brick to your family.
A raw multisig
Powerful, but complex to run, with no inheritance trigger, no notifications, no legacy.
Give a relative my keys
Then they control your funds now, not later. That’s not inheritance — it’s handing it over.

The add-on adds guarded, time-locked recovery to the wallet you already trust — without giving up an ounce of control today.

Why I built this
This started with my dad. Losing him broke my heart — but the memories we made are what get me through. I built StillWith so the people you love can go back to their memories of you, the way I go back to mine.
— John, Founder of StillWith

Is it safe? Can it be drained?

The add-on opens a gated, revocable recovery path — not a backdoor.

What it can do

  • Recover your wallet for your heirs — after guardians + a timelock
  • Hand control to a fresh passkey, on your terms
  • Sponsor the heir’s gas so they need no ETH

What it can’t do

  • Move your money on its own — every tx needs your signature
  • Be used by us — we hold no keys, no master access
  • Drain you instantly — timelock + your veto stand in the way
  • Lock you in — revocable anytime, same address throughout

Questions, answered

Can you steal my funds?

It’s designed so we can’t: fully self-custodial, we never hold your keys, and nothing moves without your signature. That design is exactly what the independent audit will verify before this ever touches mainnet.

Will this take over or break my wallet?

No. It’s an EIP-7702 add-on to the wallet you already own — same address, your keys, day-to-day signing unchanged. Revocable anytime.

Isn’t this a backdoor for hackers?

No. Recovery is gated: it needs your chosen guardians above a threshold, then a timelock you can veto while you’re here. The module is deliberately small — and an independent audit comes before it ever touches mainnet.

What wallets and chains does it support?

Any EOA wallet that can sign an EIP-7702 delegation — we’ll publish the tested wallet list as we go. Ethereum Sepolia testnet for now.

Is the code audited?

Not yet — it’s a testnet prototype. An independent audit of the recovery and trigger comes before it ever touches real assets. We’d rather tell you that than pretend otherwise.

One engine, three levels of protection

Where the engine is headed — all three tiers share the same guardian design, and none touch real assets until after the independent audit.

Planned
Standard
Everyday families
1-of-N signers
  • passkey signer
  • social recovery
Planned
Fortress
Military / deployed personnel
2-of-N signers
  • hardware signer
  • passkey signer
  • air gapped signing
  • multisig threshold
  • duress decoy
Planned
Vault
Whales / large holders
3-of-N signers
  • multisig threshold
  • hardware signer
  • institutional signer
  • spending limits
  • large transfer timelock

Outlive your keys. Protect your people.

or explore the live demo →