Nunchuk

What is Nunchuk?

Nunchuk is a software walletGlossarySoftware walletA wallet in the form of an app on a smartphone or computer. It stores your keys on a device with internet access – convenient and usually without a purchase price, but more vulnerable than a hardware wallet. Good for smaller amounts and for practising.On the learning path: Stage 5 · Step 2 – Setting up your first wallet →In the glossary →× for multisigGlossaryMultisig (multi-signature)A wallet in which several keys jointly control the bitcoin – for example 2 of 3. If one key is lost or stolen, the bitcoin stays safe. In return, setting it up and backing it up is considerably more demanding.On the learning path: Stage 6 · Step 4 – Inheritance & emergency plan →In the glossary →× and inheritance planning, on the market since 2020 ^[5]. It is made by Nunchuk Inc, which has a globally distributed team ^[2]. The desktop app, Android app and core library are open source under GPL-3.0 ^[4].

With multisig, a payment needs several keys, for example 2 of 3 hardware wallets. One stolen device is then not enough to take your bitcoin, and one lost device does not mean losing it. How this works is explained in Multisig simply explained. Nunchuk runs on smartphones and computers and works with TrezorProvider · Hardware walletTrezor SafeHardware wallets by SatoshiLabs from the Czech Republic – Safe 3, Safe 5 and Safe 7, each also as a Bitcoin-only edition.Hardware manufacturer – no financial licence required · reviewed Sept 2026Price: Safe 3: $59 · Safe 5: $129 · Safe 7: $249 (same amounts in euros, as of Sept 2026)On the learning path: Stage 6 · Step 1 – Hardware wallets compared →Our profile →AdVisit Trezor* (paid link, opens in a new window)on trezor.ioOnly buy hardware wallets from the manufacturer or an authorised reseller.*Paid link: if you sign up or buy through it, we earn a commission. Your price stays the same. How we make money →×, LedgerProvider · Hardware walletLedgerMulti-coin hardware wallets from Paris with a secure element – from the Nano S Plus to touchscreens, no Bitcoin-only edition.Hardware manufacturer – no financial licence required · reviewed Sept 2026Price: $59 (Nano S Plus) to $399 (Stax), manufacturer’s prices (as of Sept 2026)On the learning path: Stage 6 · Step 1 – Hardware wallets compared →Our profile →Official website ↗Only buy hardware wallets from the manufacturer or an authorised reseller.×, BitBoxProvider · Hardware walletBitBox02Hardware wallet from Switzerland with open-source firmware – optionally as a Bitcoin-only edition fixed at the factory.Hardware manufacturer – no financial licence required · reviewed Sept 2026Price: BitBox02 Nova €175 (manufacturer price for Germany incl. VAT, as of Sept 2026)On the learning path: Stage 6 · Step 1 – Hardware wallets compared →Our profile →AdVisit BitBox* (paid link, opens in a new window)on bitbox.swissOnly buy hardware wallets from the manufacturer or an authorised reseller.*Paid link: if you sign up or buy through it, we earn a commission. Your price stays the same. How we make money →×, JadeProvider · Hardware walletBlockstream JadeAffordable open-source hardware wallet from Blockstream: Jade Core without a camera, Jade Plus with a camera for QR signing without a cable.Hardware manufacturer – no financial licence required · reviewed Sept 2026Price: Jade Core $99, Jade Plus $149 (plastic) or $169 (metal) (as of Sept 2026)On the learning path: Stage 6 · Step 1 – Hardware wallets compared →Our profile →AdVisit Blockstream Jade* (paid link, opens in a new window)on blockstream.comOnly buy hardware wallets from the manufacturer or an authorised reseller.*Paid link: if you sign up or buy through it, we earn a commission. Your price stays the same. How we make money →×, COLDCARDProvider · Hardware walletCOLDCARDBitcoin-only signing device from Coinkite (Canada) with an air gap via microSD, NFC and QR – more for advanced users.Hardware manufacturer – no financial licence required · reviewed Sept 2026Price: Q $319, Mk5 $219 (promotional prices, as of Sept 2026)On the learning path: Stage 6 · Step 1 – Hardware wallets compared →Our profile →Official website ↗Only buy hardware wallets from the manufacturer or an authorised reseller.×, Keystone, Passport, SeedSigner and TAPSIGNER, among others ^[1].

Costs (as of September 2026)

Plan	Price per year	What you get	Your own hardware wallets
No subscription	$0	Do-it-yourself single-sig and multisig, community support	as needed
Iron Hand	$120	one assisted 2-of-3 multisig	2
Honey Badger	$480	two assisted 2-of-4 multisigs, inheritance planning	3
Honey Badger Premier	$2,100	three 3-of-5 multisigs, several people with roles, inheritance planning	4

You buy the hardware wallets separately. Nunchuk does not require an identity check on any plan ^[3].

Security and custody

Without a subscription, you hold all the keys. On the subscription plans, Nunchuk co-holds one key – one of three with Iron Hand ^[3]. Nunchuk cannot spend anything with it on its own. If you lose one of your two keys with Iron Hand, the other one together with Nunchuk’s key is enough.

For inheritance, Nunchuk offers, among other options, a time lock directly on the blockchain (timelockGlossaryTimelockA condition under which bitcoin may only be spent from a certain block height or point in time, or after a waiting period. Timelocks are a building block for Lightning and for inheritance and emergency setups.On the learning path: Stage 6 · Step 4 – Inheritance & emergency plan →In the glossary →×). It is designed to work even if Nunchuk no longer exists ^[1],[3]. This requires all the hardware wallets involved to support Miniscript, a notation for such spending conditions ^[3]. What you should arrange regardless of the provider is covered in Inheritance & emergency plan.

What to watch out for

• Complexity: more devices and more backups mean more places where something can go wrong. Multisig is usually too much for your first steps; it makes sense for larger amounts or when you want to plan your succession.
• Back up the configuration: besides the seed phrases, you also need the wallet configuration to recover – without it, even enough keys are useless (Multisig simply explained).
• Test first: practise recovery with a small amount before you move larger sums – see Testing recovery.