Some notes on purchasing vs. building a SeedSigner... These are just some periodic reminders about purchasing a SeedSigner kit / assembled SeedSigner that I like to make sure people are aware of: Part of the value proposition of our project, and DIY in general, is supply chain risk mitigation; you are placing some degree of trust in the person(s) from whom you are purchasing components if they know what the components will be ultimately used for. If you do choose this route, carefully consider the reputation of the person you choose to purchase from -- they should have a personal reputation that stands on its own within your local bitcoin community. We intentionally do not have any kind of "Buy Now" button on

SeedSigner: Air-gapped DIY Bitcoin Signing Device

SeedSigner: Air-gapped DIY Bitcoin Signing Device

BUILD YOUR OWN BITCOIN SIGNING DEVICE using a raspberry pi zero (VERSION 1.3) You can build an offline, air-gapped Bitcoin transaction signing devi...

I am aware of people building and selling SeedSigners on 5 or 6 continents at this point, and we also do not attempt to maintain any kind of centralized "approved sellers" list. Also very important for those who take this route is that the seller should not be sending a microSD card that is pre-loaded with any kind of software -- individuals should be comfortable downloading (or building), verifying, and loading their own software if they are going to be using a SeedSigner. This is a reasonably simple process that has been thoroughly documented in our Github repository. If you choose to purchase a SeedSigner, consider purchasing the signer as a kit (or planning to disassemble the signer to examine the components), and comparing the components you receive with images of known-good parts online. This can give you some peace of mind and is a useful process to spot any inconsistencies. One last suggestion -- consider choosing a seller who has publicly committed to donating a portion of their revenue back to the SeedSigner project to support our contributors. We do not attempt to audit these donations in any way, but it seems like a fair request given the value our contributors have created. If you would like to build your own SeedSigner, Pi Zero W can be easily found among the retailers listed on https://pilocator.com, and if you choose to do so, can be very simply modified to permanently disable the device's wireless communication capability. The Zero 1.3 can be more challenging to source, but can be found among smaller RPi distributors, as well on AliExpress. The needed Waveshare display hat and Pi camera can be found at a variety of different retailers, check out

SeedSigner: Air-gapped DIY Bitcoin Signing Device

Hardware - SeedSigner: Air-gapped DIY Bitcoin Signing Device

THE ESSENTIALS 1. Raspberry Pi Zero (v1.3 preferred, W acceptable) 2. WaveShare 1.3 inch LCD display w/ controls (must have a 240×240 pixel displa...

for Amazon & AliExpress links for those components. In addition to reducing your supply chain risk, ordering the parts yourself will help you avoid being placed on yet another list of bitcoiners. I continue to appreciate all of our contributors, users, donors, and others who have supported the project in various ways -- thank you everyone! 🧡

SeedSigner is not compatible with any kind of subscription model, but if you appreciate our project please consider donating to give some value back to our contributors:

SeedSigner: Air-gapped DIY Bitcoin Signing Device

Donate - SeedSigner: Air-gapped DIY Bitcoin Signing Device

It is jointly managed by 5 key stakeholders in the SeedSigner project and earmarked to support the work of our developers!

View quoted note →

Just purchased Damus Purple to support @jb55 and his work. 💜

Will saying a lot of quiet parts of loud here. View quoted note →

🤣 View quoted note →

It's hard to express how satisfying it is to read messages like this one. Much gratitude to @Nick Klockenga, @Keith Mukai, @Jean Do, @Easy, @Ace all of our other contributors, and anyone else who has lent our project a helping hand. View quoted note →

All that is required for evil to prevail is that good people remain silent.

If bitcoin comes to rely too heavily on corporate grants/donations, you'll only get the tools that for-profit corporations want you to have. Keep bitcoin free -- build your own shit if you can, contribute to your favorite project, or donate *directly* to it (avoid pass-throughs).

I feel this, LoL. View quoted note →

I get an extra little charge when I see @Nick Klockenga like my posts -- he is one of the most based bitcoiners I know.

Just FYI because the question was asked. 🙂

Can confirm. View quoted note →

Agree that this is likely true. Those trying to create a strong sense of urgency around network updates needing to happen asap likely have an agenda. View quoted note →

"...only needs access to the device for seconds to binary-patch the firmware..." So dramatic, that darn evil maid is at it again. Nothing new here, just a different type of theoretical attack that requires you to run malicious software on your signer. With our model, users are responsible for making sure they are running good software -- same as it ever was. View quoted note →

This is the way... View quoted note →

🧡 View quoted note →

I'm relatively inexperienced as a public speaker -- sometimes you feel like you're on your game, and sometimes things feel a little off. This one felt pretty good IMHO, worth a listen if you have an interest to hear a bit about our project. 🧡

🚨SeedSigner workshop tomorrow... 🚨 View quoted note →

Apologies for the cross post, but so many people feel the same kind of anxiety when using their cold storage tools. Getting a SeedSigner and learning how to use it, even if you keep using your original HWW, has a ton of value.