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nunchuk_io
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Bitcoin wallet specialized in multisig and collaborative custody solutions. Visit https://nunchuk.io.

Special report from our new project (zone21.com).

Bitcoin-Backed Lending 2025—Decoding Cost, Control & Hidden Risk.

We size the US $14 B market, compare CeFi vs CeDeFi vs True DeFi, and rate existing lenders with our 13-Factor Risk Model. The report also covers new rules from the GENIUS Act to Hong Kong’s VASP regime and offers a one-page borrower checklist.

Special thanks to nostr:nprofile1qqsw4v882mfjhq9u63j08kzyhqzqxqc8tgf740p4nxnk9jdv02u37ncpz4mhxue69uhhyetvv9uju6mpd4czuumfw3jsz9thwden5te0dehhxarj9ekkzmrfdchx7mnvmuayrg and nostr:nprofile1qqsv0hxt5nlygf48k84z8xjkx7ayp74esckgep4nxv87vh5lve6rtaspzamhxue69uhkummnw3ezuendwsh8w6t69e3xj7spz3mhxue69uhhyetvv9ujuerpd46hxtnfdu0e4rxk for their review.

Read the Executive Summary or download the full PDF ⬇️

https://www.zone21.com/reports/bitcoin-backed-lending-2025

Yes, see desktop release page below. New desktop version (1.9.47) should be out soon (< 24 hours).

https://github.com/nunchuk-io/nunchuk-desktop/releases

New mobile release!

• Taproot multisig wallets: manual and automatic fee selection

• Show saved address labels in transaction details

• Option to rebroadcast rejected transactions

• Update default signet server

• Add guest wallets notice

• Assisted wallets: option to manually save BSMS in Setup Wizard

• Bug fixes and improvements

Taproot fee selection: what’s that about?

Taproot lets one wallet hide many spend paths.

Different path → different weight on-chain → different fee required.

So we added two ways to handle it:

• Manual: see every path and its fee. Tap the one you want.

•Automatic: if cheap-vs-costly is ≤ 10 % or $0.20, we default to the pricier path. Tweak the thresholds or turn them off any time.

As Bitcoin smart contracts get more complex and the subsidy era fades, fee variability will keep growing, both within a single path and across multiple paths, even before you factor in fee-bumping tools like RBF or CPFP.

We’re building a solution that’s easy to use and puts you in control.

Got feedback? Let us know!

Got it, thanks for the clarification.

Yes, for cold storage you might not want to only use Tapsigners (although, even a Tapsigner-only multisig would still be better than something like Bitkey, which is a closed system). As long as you have at least one hardware in your multisig quorum that has a display and can verify transactions independently, it’s a solid setup.

You can pair a hardware signing device with Nunchuk that does have a display (like a Coldcard or Blockstream Jade), and verify the details of the transaction before signing. You can also pair multiple hardware with Nunchukm and create a multisig wallet, which offers superior security and robustness compared to a singlesig wallet.

In the above setup, Nunchuk only acts as a watch-only wallet coordinator. So yes, 100% Nunchuk can be used for cold storage. And many of our users have done so.

KYC is a disaster waiting to happen.

If data leaks can happen to Coinbase, it can happen to anyone.

Related: never use a Bitcoin inheritance service that requires KYC.

You’re not just endangering yourself — you’re putting your family at risk too.

They’re even less equipped than you to defend against attackers.

Nunchuk’s inheritance protocol is non-KYC. That’s by design.

New mobile release!

Highlights:

• Custom blockchain explorer

• Recover group wallet via QR

• Ability to archive wallets

• Ability to long-press & reorder wallets on Home

• Anti-fee sniping setting

• Bug fixes and improvements

Available in the App Store and Play Store:

https://apps.apple.com/us/app/nunchuk-bitcoin-wallet/id1563190073

https://play.google.com/store/apps/details?id=io.nunchuk.android&hl=en_US&gl=US

🔐 Collaborating on Bitcoin shouldn’t be hard.

Nunchuk Group Wallet makes it effortless—set up in seconds, works with your favorite hardware signers, and keeps everything end‑to‑end encrypted.

For a deeper dive, read our blog post: https://nunchuk.io/blog/group-wallet

https://m.primal.net/QZVW.mp4