Hardware wallet
Source Summary
Add Frostsnap to commercial hardware wallets (FROST threshold multisignature) ← Older revision Revision as of 07:54, 16 July 2026 Line 379: Line 379: [https://shiftcrypto.ch/bitbox02 BitBox02 product page] | [https://github.com/digitalbitbox Source code] [https://shiftcrypto.ch/bitbox02 BitBox02 product page] | [https://github.com/digitalbitbox Source code] <br clear="all"> === Frostsnap === [[File:Frostsnap Hardware Wallet.png|200px|thumb|left|Frostsnap devices daisy-chained into a mobile phone. Choosing a threshold for the multisignature wallet.]] Frostsnap hardware wallets make [[multisignature]] security simple. Each wallet consists of a set of Frostsnap devices and a chosen threshold (e.g. 2-of-3). The wallet's key is created through distributed key generation and never exists on any one device; transactions are signed using [https://eprint.iacr.org/2020/852 FROST], so only a threshold of devices cooperating can produce a signature. Frostsnap's multisignature is enforced through mathematics rather than [[Script|Bitcoin script]]. Transactions are signed with an ordinary [[Schnorr]] signature spending a [[Taproot]] key path. With a single group public key, Frostsnap wallets are indistinguishable on-chain from single-signature Taproot wallets, paying single-signature fees and revealing nothing about the signing policy. Main features: * Recovery needs only a threshold of devices or backups, with no descriptor metadata to back up * No individual device is trusted: the phone verifiably contributes entropy to key generation and signing, protecting against weak randomness, supply chain attacks, and devices leaking secrets through their signatures (see [[Hardware wallet#Security risks|Security risks]]) * Losing a device below the threshold loses nothing; stealing a device below the threshold gains nothing * No PINs or passphrases to complicate recovery or inheritance * No vendor lock-in: a threshold of backups reconstructs a key spendable without Frostsnap hardware or software * Touchscreen, USB-C, aluminium casing; app for Android, Linux, macOS and Windows * Fully open source (MIT), written in [https://www.rust-lang.org Rust], with reproducible firmware builds [https://frostsnap.com frostsnap.com] | [https://frostsnap.com/technical Technical documentation] | [https://github.com/frostsnap/frostsnap Source code] <br clear="all"> <br clear="all">