Krux v25.03.0: Taproot and WSH Miniscript Support

• This release enhances Krux by unlocking more features of Embit and adding Miniscript support. It allows descriptor loading and signing of PSBTs from Miniscript-based wallets, with adapted UI and internal verification tools to support these capabilities.

The project extends a special thanks to @stepansnigirev for Embit, a crucial library for Krux; @jdlcdl, @tadeubas, @qlrd, and @kkdao for their passion and contributions to development and testing; @pythcoiner for adjustments to Embit for Taproot Miniscript and Liana compatibility; @rough-street for early contributions and UI improvements; all our Telegram group members for their ideas and feedback; and @OpenSats, HRF, and @CasaVinteUm for their support.

What's new

• Taproot and WSH Miniscript support:
  • Added an indented visualization of Miniscripts for improved readability.
  • Implements Miniscripts policy and co-signer verification.
  • Supports custom derivations.
  • Detects unspendable internal keys in Taproot.
  • Includes various UI and settings adjustments.
• Easter Eggs reveal. Hints have been introduced to help users discover hidden features, such as:
  • Swiping sideways to change the keypad keyset.
  • Switching between camera modes.
  • Adjusting QR code brightness.
• Rearranged keypad keysets. Keypad keysets were organized to group similar keys and help with visibility. Also the "ABC" key now changes to "123", "<>." and "abc" according to the next keyset.
• More camera modes:
  • A zoomed camera mode is now available for all cameras.
  • An anti-glare mode has been added for the GC0328 camera.
• More intuitive tamper check. The Tamper Check Flash Hash is now displayed immediately after generating the Tamper Check code, providing better clarity on its purpose and expected output.
• Display customization options. Screen orientation can now be flipped on Yahboom and WonderMV devices.
• SD Card PSBT signing preserves all fields:
  • When signing PSBTs via SD card, all fields—including signatures from other keys—are preserved. This ensures a seamless signing process across multiple devices and locations, allowing a single PSBT file to be incrementally signed by different signers.
• Other bug fixes and optimizations:
  • New encrypted mnemonics now display a key strength score during confirmation. If stored, they are sorted alphabetically.
  • Flash Map drawing errors have been corrected.
  • Address scanning for Blue Wallet has been updated to match its revised export format.
  • The notation for hardened derivation path nodes has been standardized to use "h".
  • A faster algorithm for double mnemonic calculation has been introduced.
  • PSBT change detection has been made more restrictive.
• Revamped documentation. More information and better user guidance. Check it out here.

For technical support with Krux installation or usage, users can join the Telegram chat. Follow Krux on X (Twitter) or send messages via the Bitcoin Talk Forum. Additionally, check out the DIYbitcoin chat on Telegram, which is a larger community of tinkerers, builders, and hackers.

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