World-class security
Eliminate single points of failure with a state-of-the-art multisig wallet. Extensive hardware support, decoy wallets, advanced coin control and emergency lockdown.
NEWNunchuk 2.0: autonomous inheritance is here
Secure your bitcoin for generations
The first Bitcoin inheritance solution designed to outlive the company that created it. Built on the most advanced multisig platform.
- Zero KYC
- Trust-minimized multisig
- Open source
As featured on
Why Nunchuk
Security, inheritance and privacy. No trade-offs.
Inheritance planning
Autonomous inheritance with on-chain timelocks, designed to outlive us. The most comprehensive non-KYC inheritance solution available.
Privacy by default
Security shouldn't cost you your privacy. We minimize data collection and protect you and your family at every step.
Autonomous inheritance
Plan your legacy
Secure your legacy with the most advanced non-KYC inheritance service. On-chain timelocks guarantee execution, even if Nunchuk ceases to exist, while the platform provides ongoing security and guided claims for your heirs.
Compare
How Nunchuk compares
| Feature | NunchukRecommended | Exchanges/ Custodians | Hardware wallets | Other multisig services |
|---|---|---|---|---|
| Autonomous inheritance (on-chain execution) | Yes | No | No | No |
| Guided inheritance assistance | Yes | No | No | Yes |
| Strictly no KYC | Yes | No | Yes | No |
| No single-point-of-failure | Yes | No | No | Yes |
| Multi-user collaborative custody | Yes | No | No | No |
| Minimal dependencies | Yes | No | Sometimes | No |
| Built on open standards | Yes | No | Sometimes | Sometimes |
NFC signing
Access your funds with simple taps
Enjoy the world's first NFC-capable Bitcoin cold storage. Set up your wallet and sign transactions with simple taps on your phone. No wires required.
Assisted recovery
Worried about backups?
We've got you covered. Your wallet configuration is stored securely in the cloud, and assisted recovery gets you back in on a new device in a few simple steps.
Wallet types
Different wallets for different needs
Self-custody multisig, assisted multisig or the world's first multi-user collaborative multisig. Manage bitcoin yourself, with your family or with your business partners, all in one wallet.
Air-gapped signing support
Looking for an air-gapped setup? Sign your transactions with QR codes or over SD cards. Combine air-gapped and NFC keys for the best of both worlds.
The world's first multi-user multisig
Co-manage bitcoin with your family or business partners. Communicate and transact securely and privately, all in one place.
Hardware
Works with 10+ hardware wallets
Mix keys from different makers in one multisig wallet, so no single vendor can put your bitcoin at risk. How multi-vendor multisig works
For advisors
Are you a Bitcoin advisor?
Want to help your clients secure their bitcoin through collaborative custody? We've got you covered.
Explore Byzantine
Testimonials
Trusted by the people
Just setup my first #Bitcoin 2 of 3 Multisig wallet using @COLDCARDwallet + @TAPSIGNER + @nunchuk_io.
This combination is years ahead of anything else I have used with respect to balancing security, convenience, and self sovereignty.
Nunchuck slaps too.
Spectacular work lads.
Now with our new @TAPSIGNER + @nunchuk_io NFC integration, self-custody has never been easier
This product from @nunchuk_io looks absolutely outstanding. Slick UI. The collaborative multisig feature looks particularly good for family self custody / inheritance planning. Cheers for the tutorial @BTCsessions https://twitter.com/BTCsessions/status/1478420389957025793…
Just wanted to say again, that @nunchuk_io is one of the most exciting wallet designs that has been living rent free in my head for weeks recently.
Multisig made intuitive & easy is an incredible step forward.
Very happy to see that bitcoin multisig options are expanding. @nunchuk_io is a really cool way to create multisig quorums with friends, family, business partners and other groups of people. The end-to-end encrypted messaging in-app is a great feature.
I just tested numchuk and is mind-blowing
Finally we have a granpa-proof way of working with #Bitcoin multi-signatures.
Amazing job
Anyone who says holding ur own keys is "too difficult" is in for a rude awakening — taking custody of #BTC is already easy & will only get easier.
Messing w/ my @TAPSIGNER this morning via @nunchuk_io wallet & getting a glimpse into the future melding of hot & cold storage.
Depends on size.
Something like the free Nunchuk Bitcoin app for starters. Then a Tapsigner card wallet can be paired with it for moderate amounts for more security. For larger amounts, a hardware wallet or multisig collaborative custody.
Today I helped a 78 year old lady buy her first 100,000 sats. Self custodied with@nunchuk_io.
Sent her a@knutsvanholm/@IoniAppelbergand a@TomerStrolightvideo (Generational Wealth) to watch as follow up.
Feels good.
Trying out the @TAPSIGNER today with @nunchuk_io wallet. Took about 2 min to set up, pretty cool use of nfc tech to set up a low cost multi-sig for #BTC
Nunchuk is and remains my favorite on-chain mobile wallet app.
* Best implicit teaching tool for basic concepts - wallets are made of keys!
* Use default settings or easily connect to your own node.
* Integrates well with airgapped signers/HWW's
* Inheritance planning/multisig
Big update from@Nunchuk: Key replacement for multisig wallets is now automated.
And with FROST wallet threshold signing & proactive secret sharing coming soon, you'll be able to replace keys without on-chain txs.@nvk,@rot13maxi&@bitschmidtydive in on multisig tech.
Thanks to @nunchuk_io, mobile wallet devs can now use this C++ to integrate #TAPSIGNER and @SATSCARD: https://github.com/nunchuk-io/tap-protocol…
This is great
As an accountant, there is always so much frustration around bank controls. Not because of the amount of signatories, but because of physically chasing signatures
On a bitcoin standard, this is easy as everything can be signed cryptographically via group chat!
I blame @rot13maxi for turning me into a @nunchuk_io maxi.
Nunchuck +@TAPSIGNER + @COLDCARDwallet = perfect mobile multisig wallet.
Having a signing device in your wallet when you’re out and about feels incredibly futuristic, easy, practical and secure.
@nunchuk_io is a top notch, easy to use #bitcoin wallet. Great support service and especially love them telling the Govt of Canada GFY. Highly recommended paired with @COLDCARDwallet
@TAPSIGNER x @nunchuk_io Wife says it’s the easiest multisig setup yet. NFC/tap signing on mobile is the future.
Multisig is at this point a vastly underestimated game changer - for everything.
It raises the cost of an attacker to a multitude - all the while increasing the odds that you don't f*ck up your own key management (if done right).
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