Crypto-Guide

@sesi_the_man @omg21btc @SeedEtcher Actually not yet :)

@omg21btc @SeedEtcher If you’re looking for thermal printer compatibility, IIRC @YTCryptoGuide has implemented that in his “ShieldSigner” fork…

Printer arrived yesterday. 🧡 cc @SeedEtcher

@Printer_Gobrrr @SeedSigner @xmrstreet Amazing :)

Highly unusual @SeedSigner spotted in the wild 👀 Hardware design by @xmrstreet Enclosure design by me Available in both shops, soon™

KEF encrypted mnemonic QR codes interoperability loop test: Krux -> SeedSigner (fork) SeedSigner -> Kern Kern -> Krux Different devices, libraries, and languages seamlessly handling a shared encryption envelope format.

Our FOSH approach to the @SeedSigner+ board is already bearing fruit, kudos to @YTCryptoGuide for porting the initial board specs to KiCAD, and to @xmrstreet for adding Smart Card ports to the design. Original reference design files can be found at: github.com/SeedSigner/har…

Smart Card-Compatible SeedSigner+ kits/signers are now available in the shop. Still considered experimental and for devs/advanced users, but I continue to hear from people who are intrigued by the Satochip/Satodime/Seedkeeper functionality. btc-hardware-solutions.square.site/product/smart-…

Traveling to Brazil, Japan and Korea last month has made me realize that I really need to level up my game in terms of the @SeedSigner hardware profiles that I offer in my @btc_hardware shop. Am working on adding @Kayth21's push case, a transparent resin enclosure option (h/t @bitkitBTC/@jikkeyBTC), and a signer with @YTCryptoGuide's smartcard functionality. It will take some time to pull things together, but I really appreciate all of these builders for pushing things forward and creating such great new physical interfaces for SeedSigner. 🧡

@ishi0k This one has the full cover plate printables.com/model/1394956-…

I had a custom case made for my #SeedSigner model, and I like how it turned out with the phrase “Self Custody or Slavery.” The only downside is that the 3D model doesn’t account for the top cover and circuitry, the screen and buttons are left exposed. Is there any 3D template that covers everything? Cc: @YTCryptoGuide @SeedSigner @satochip

Review of the @BitBoxSwiss Bitbox02 Nova, finally adding support for iPhone users. I also added the ability to import the MicroSD backups into my fork of Seedsigner for offline recovery if neded :) youtu.be/zFa_owkxJNI

no pope, no president, no ceo only entropy, solder, open-source ethos behold the DIY signer trinity: @SpecterDIY @SeedSigner @selfcustodykrux

@SpecterDIY @SeedSigner @selfcustodykrux @BlockstreamJade ACK AND I FORGOT I also have the @YTCryptoGuide fork of @SeedSigner to run Javacards and @satochip! How could I forget, I was just helping @Bitcoineando21's workshop to build these! Plus my @SpecterDIY is smartcard enabled. And I got the new wonder-k K210.

Cross collaboration between @selfcustodykrux @SeedSigner and @SpecterDIY! Results of our @casavinteum retreat, made possible by @Vinteum_org and @HRF

@ishi0k @SeedSigner @satochip Not sure if the design files for the large case are generally available, but all the stuff I have published is just GPL, so edit away :)

@YTCryptoGuide @SeedSigner @satochip 🕶️👇🏻 Is the design 100% customizable? At the user’s discretion? Is there any specification required for the 3D print? Like this for example, including personalizable logo👇🏻

Fully stateless signing @SeedSigner with all the signing happening on the @satochip, keys never touch the Pi... (The step beyond storing keys on Seedkeeper cards at rest) Full FOSS stack. (Also works with retail card as pictured) Watch this space :) Watch this space.

@ishi0k @SeedSigner @satochip All on printables printables.com/model/1394956-…

@YTCryptoGuide @SeedSigner @satochip A favor: if that case is needed in El Salvador, how can it be obtained? There was a workshop few days ago, but the cases are needed. Thank you.

Love the new open source @SeedSigner+ with the fork from @YTCryptoGuide to use @satochip seedkeeper to securely store encrypted seeds, passphrases or masterpasswords from password managers. Build and shipped by @xmrstreet

@JuanSGalt @BitcoinMagazine @satochip @SeedSigner @Bitcoineando21 @AdoptingBTC Looks good :)

@YTCryptoGuide @BitcoinMagazine @satochip @SeedSigner @Bitcoineando21 @AdoptingBTC You made the updated firmware? was not aware of that. I can make the update to the article.

Build Your Own Hardware Wallet? Seedsigner + Satochip Combo is Nuts bitcoinmagazine.com/business/build… via @bitcoinmagazine @satochip @SeedSigner @Bitcoineando21 @AdoptingBTC

Video covers @YTCryptoGuide's experimental smartcard fork, but also provides a good overview of SeedSigner more generally. 🙂 youtube.com/watch?v=EgjCzd…

Now in stock: The SeedSigner Smartcard Hat Kit A seamless extension for your SeedSigner that brings smartcard integration to your setup. Designed for enthusiasts and power users who prioritize secure, offline bitcoin storage, this kit unlocks new ways to manage and protect your corn with enhanced hardware capabilities. At the heart of the kit is the dual-slot Smartcard Hat, which slots effortlessly between your Raspberry Pi Zero and the display hat. It provides a CCID/PCSC-compatible interface with slots for both standard ID-1 cards (like bank cards) and smaller ID-000 SIM-sized cards, plus a handy USB-C port for power. Rounding out the package is a versatile DIY JavaCard smartcard, shipped unlocked with default keys, ready for you to load applets directly via your SeedSigner. It's compatible with both contact and NFC interfaces for flexible use. This combination of SeedSigner and smartcards opens up powerful possibilities for bitcoin cold storage. Imagine signing transactions and verifying PSBTs offline using your @satochip or the included DIY card, all while maintaining air-gapped security. You can easily sign messages, export xpubs for single or multisig configurations, and integrate with address explorers for better oversight. With Seedkeeper from SatoChip, managing seeds, wallet descriptors, and secrets becomes straightforward—supporting Electrum-style seeds, split passphrases, and even encrypted QR codes for added layers of protection. Whether you're building a robust multisig setup or simply want more options for your offline storage, the Smartcard Hat Kit adds many interesting possibilites to and already highly capable device. Get yours today and take your @SeedSigner to the next level! Link below. P.S. Shoutout to @YTCryptoGuide and @satochip for making this possible! 🙏

@Dwyndal @satochip @SeedSigner youtu.be/KXHVs1-oIdk

@satochip @YTCryptoGuide @SeedSigner I’m not prepared. I wish to be prepared. Show me

SeedSigner + (bigger screen) + smartcard support. You are not prepared... 💥

Krux v25.09.0 released! Powerful encryption tools and lots of UI and performance improvements! github.com/selfcustody/kr…