Funded! This project was successfully funded on July 25, 2013.

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Storing bitcoins in a paper wallet is the most secure way to keep them, but making paper wallets is a hassle. Piper makes it easy.

Storing Bitcoins securely with paper wallets

Making a paper wallet shouldn't be a hassle, but currently it is.  You have to download a LiveCD, make sure it has bitcoin software on it, burn the CD, reboot your computer, go into the BIOS and make sure the CD is selected as the first boot device, then boot into the LiveCD, install and configure your printer, etc.  

Piper makes creating paper wallets easy.  

Piper is a hardware-based paper wallet generator and printer.  It's easy to use, and yet fully customizable.  Piper has a single button which creates a new paper wallet when pressed.  Piper also has an HDMI port and a USB port, so you can hook up a TV/Monitor and Mouse and Keyboard, and customize your prints or even use your own USB printer.

How does Piper work?

Piper has a single button which creates a new paper wallet when pressed.  Piper also has a mode switch which is used to switch between "Remember" and "Forget" modes.  When Piper is in Remember mode, the paper wallets you print will be backed up on Piper's internal memory.  If you plug in a USB drive, Piper will automatically back up the keys used to make the paper wallets it has printed.  When Piper is in Forget mode, the paper wallets will not be stored internally.

How do I know I can trust the private keys that Piper generates?

Piper is 100% open source, so you can clearly see how the paper wallets are generated.  Piper has no internet connection, so nobody can ever steal your private keys and therefore your bitcoins.  Piper has passed 26 of the Dieharder tests of randomness, and every unit includes this test so you can run it yourself and verify the randomness of the private keys generated.

What does Piper look like?

Piper's enclosure is a ~4" cube made of transparent green acrylic.  Piper has a switch and a button on top.  The switch allows you to switch between "Remember" and "Forget" modes.  The button allows you to print a paper wallet.

What powers Piper?

A Raspberry Pi Linux computer generates the keypairs, and a small printer creates the paper wallets. 

What does Piper come with?

A power supply compatible with 100-240VAC and 1 roll of paper.  Extra rolls can be purchased on the piperwallet.com website.  Each roll is enough for more than 100 paper wallets.

How long do the paper wallets last?

The paper wallets will last 7 years or more if stored properly.  Storing them properly means cool, dry, office filing type conditions.

Risks and challenges Learn about accountability on Kickstarter

Building everything myself is going to be quite a challenge as the assembly process is quite time consuming.

FAQ

  • After booting up, Piper loads up a local copy of the BitAddress.org site for you to use to make all kinds of paper wallets.

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  • No, Piper Model A has no physical way to connect to the internet unless you put a USB wifi adapter in its USB port. However, Piper Model B has an ethernet port. If you want to connect Piper to the internet for some reason, that is okay, as long as you never connect it again once you have used Piper to generate keys. If you do want to connect it to the Internet after Piper has generatred keys, you should fully wipe Piper and zero over the data to ensure that your keys can never be discovered.

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  • Yes, Piper includes a 30 day warranty that covers any functional problems with the printer. Even if Piper breaks after the warranty expires, please contact us. We offer free support to help you repair it, or we offer a repair program where you will only be charged the cost of the replacement part.

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  • Check out the FAQ section on piperwallet.com, or feel free to contact us with any questions.

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  • Model A has 256MB RAM, one USB port and no Ethernet (network connection). Model B has 512MB RAM, 2 USB ports and an Ethernet port.

    Both are powered by a Raspberry Pi computer with a Broadcom BCM2835. This contains an ARM1176JZFS, with floating point, running at 700Mhz, and a Videocore 4 GPU. The GPU is capable of BluRay quality playback, using H.264 at 40MBits/s. It has a fast 3D core accessed using the supplied OpenGL ES2.0 and OpenVG libraries.

    (Taken from RaspberryPi.org)

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    Your name on the Piper website, listed as a supporter of Piper and Bitcoin!

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    You get a thank you postcard from us, and your name on the Piper website, listed as a supporter of Piper and Bitcoin!

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    5 pre-printed paper wallets made by a Piper device. These are just for fun and not for storing large amounts of bitcoins, since the private keys have been seen by me and sent through the mail. And your name on the Piper website, listed as a supporter of Piper and Bitcoin!

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    First batch of Pipers! A single Piper device complete with a 50' roll of paper, enough for 100 paper wallets.

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    International Backers, this is for you! International shipping is included in the price. First batch of Pipers! A single Piper device complete with a 50' roll of paper, enough for 100 paper wallets.

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    First batch of Pipers, and you get a special Piper with double the RAM, 2 USB ports instead of 1, and an ethernet port. Comes complete with 5 rolls of paper, enough for 500 paper wallets and a flash drive for backing up your keys.

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    International Backers, this is for you! International shipping is included in the price. First batch of Pipers, and you get a special Piper with double the RAM, 2 USB ports instead of 1, and an ethernet port. Comes complete with 5 rolls of paper, enough for 500 paper wallets and a flash drive for backing up your keys.

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