Bitcoin Forum

Bitcoin => Project Development => Topic started by: stick on March 31, 2013, 01:42:12 AM



Title: [ANN] PaperCoin
Post by: stick on March 31, 2013, 01:42:12 AM
Hi all!

I would like to introduce a weekend project we did with my friend Split. PaperCoin is a website that provides a very simple way for people to print out paper offline Bitcoin wallets. Once folded, the private key is hidden inside while the address is still visible from the outside. It's a great way for introducing your friends to Bitcoin. All cryptography and PDF creation happens in Javascript in your browser and nothing is sent back to server. You can even download the source code (yes, it's open source!) and run the software locally, if you wish.

Enough babbling, go to http://papercoin.org/ and try for yourself! :-)

This is how the output page and folded wallet look like:

http://papercoin.org/photo.jpg

Feedback, ideas and patches are appreciated, of course!


Title: Re: [ANN] PaperCoin
Post by: aantonop on March 31, 2013, 01:49:05 AM

Please see a similar, open source licensed effort we have in progress here:

https://bitcointalk.org/index.php?topic=155847.0;all

There may be some potential for collaboration, and we could certainly use insights, feedback and support.



Title: Re: [ANN] PaperCoin
Post by: maxmint on March 31, 2013, 08:24:31 PM
Really great looking site. Who did the design for this?


Title: Re: [ANN] PaperCoin
Post by: mc_lovin on March 31, 2013, 08:33:31 PM

Please see a similar, open source licensed effort we have in progress here:

https://bitcointalk.org/index.php?topic=155847.0;all

There may be some potential for collaboration, and we could certainly use insights, feedback and support.




His project is open source too, see the bottom of the page.

I think this is one of the best things to happen to Bitcoin yet.  I love it.


Title: Re: [ANN] PaperCoin
Post by: aantonop on March 31, 2013, 09:40:15 PM
Also open source? EXCELLENT.

Plus it seems you have very good design skills for web.

Please let me know if you had a look and found the OpenPaperWallet project interesting:
https://bitcointalk.org/index.php?topic=155847.0;all


Title: Re: [ANN] PaperCoin
Post by: acf6996 on March 31, 2013, 10:27:25 PM
Well done!

I tried to import the privat key into Blockchain wallet. But it rejects it.

Can you loose another word or two how to work with this?

Thank you!


Title: Re: [ANN] PaperCoin
Post by: stick on March 31, 2013, 10:29:10 PM
Plus it seems you have very good design skills for web.

My friend did the design.

Really great looking site. Who did the design for this?

See above.


Title: Re: [ANN] PaperCoin
Post by: stick on March 31, 2013, 10:30:40 PM
I tried to import the privat key into Blockchain wallet. But it rejects it.

Did you read the private code after folding the paper? Private codes start with "5".


Title: Re: [ANN] PaperCoin
Post by: acf6996 on March 31, 2013, 10:50:17 PM
Indeed that was it. Was too lazy to cut and origami the paper... 

If you do it is obvious and works well. Only typing in the private key is a pain.


Title: Re: [ANN] PaperCoin
Post by: stick on March 31, 2013, 11:46:24 PM
If you do it is obvious and works well. Only typing in the private key is a pain.

Added QR code for private key in the latest version.