Decided to close shop and release the code so everyone can download freely, see this:

http://www.reddit.com/r/Bitcoin/comments/1typhl/cold_pi_offline_raspberry_pi_based_wallet/cectur2

I love piper but it costs more than Cold Pi and also provides less features. Cold Pi has Armory that allows you to manage multiple wallets/addresses, print paper wallets and many more features.

Yes, since you're cloning your SDHC card you would like to do that on another offline machine since you don't want to risk exposing the data on your SDHC card.

The source code is included within the SDHC card. If you feel this is overpriced shit you don't have to buy it.. People are free to compile it on their own as I did.

I'm writing this exact tutorial at the moment, you could use Win32 Disk Imager (also available for linux).

I was under the impression that if I do not modify the source code and keep the open sourced copy on the device I'm selling that I am not violating GPLv3, am I wrong to think that?

Great! Thanks!

Let's say I have some coins on an Armory client on an offline computer.

Now I want to keep that computer offline, but would like to spend some of the coins.

What is the most secure way of doing that? I could print a paper wallet of my cold wallet but that will include ALL coins and I would like to use just a fraction of it.

Thanks

I have added the option to buy the SDHC card alone without the Pi.

I'm still looking into getting Raspberry Pis for a better price so the price for the whole kit has not changed drastically yet.

Please let me know of any issues.

OK, note taken. I will do some more research and see if I can purchase it cheaper and will definitely alter the price accordingly.

Thanks for your help!

Wow that's pretty cool, I have to say I can't buy these where I live for that price. It's kind of weird since the Raspberry Pi B model price is fixed pretty much worldwide on $50, so he has to fit in an SD card, HDMI, power cable and case for 15 which is impossible, so maybe it's refurbished or something?

One more thing about the SDHC card, the one you're seeing on the picture is a Class 4 SDHC card, I'm providing a class 10 card which read/writes much faster.

We're currently working on more manuals, we will release a few today and some more tomorrow.

No I'm actually not greedy, if you take all costs into account you will see so yourself.

Yes, we're planning on selling the SDHC card alone. Regarding the price, we're selling the Model B Raspberry Pi which is $50 alone. Add the Case, power cable, sdhc card, shipping and installation time and you'll find that we're actually selling it for quite cheap.

We took the Raspberry Pi and made it into an offline Bitcoin wallet.

It's powered by Raspbian and has Bitcoin Armory pre-installed which allows you to manage your offline wallet, receive coins, print paper wallets and more..

Using the Cold Pi is easy, just plug it in to an HDMI source, wait for it to boot and you're good to go.

We've started taking orders today via BitPay.

For more info please visit the Cold Pi website: http://coldpi.com (Still missing some manuals and FAQs, for any questions please ask here or email info@coldpi.com)

If you have any suggestions or ideas on how to improve Cold Pi we will be more than happy to hear.

Thanks.

Thanks for replying,

Yes I understand that BIP38 is used for a single address. I forgot to mention in my original post that I would like to use just one address under the bitcoin-qt wallet.

My question originates from coldcoins.co, they provide stainless steel ('paper') wallets, their model requires me to send them both the public and private key (encrypted with BIP38).

So I was wondering if sending that info to them via email/form is more secure than taking my bitcoin-qt wallet, encrypting it and saving it in my gmail for example.

From what I understand after reading your answer that it's not a clear cut, meaning they are both pretty hard to crack but one is not MUCH better than the other, correct?

If you had to put your wallet out in the open, which is more secure?

1. Encrypt your wallet.dat using bitcoin-qt using a 30 character password
2. Encrypt your private key using BIP38 with the same password from point no. 1

Thanks,

There's no security risk or any difference by creating the paper wallet on Ubuntu 12.04/13. The new version of bitaddress and the version before it both support BIP38 so you're good to go.

The HTML file in the root folder contains the 'compiled' version with all necessary scripts.

Just download this:

https://github.com/pointbiz/bitaddress.org/blob/master/bitaddress.org.html

Thanks I'll add that.