I've read countless threads on several forums of people complaining how difficult it is to send offline transactions. So I was thinking about it, and this is what I've come up with.

For the offline computer:
A script with a simple interface that will create a partial raw transaction hex and display a QR code representing it's value.
Yes, a QR code CAN hold that much data. The script would be opensource.

For the online device (cellphone?)
A mobile app that will scan the QR code get unspent trxid's and send the raw transaction to the network. We all have cellphones these days, right?
Could also write a script that can use a webcam to read the QR code I guess. The mobile apps would be opensource as well.


Now what?
I've written the first version of the script and iPhone application. I want to do an application for Android as well. The problem I'm having is covering cost of the developer accounts for Apple and Google. I've got another large Bitcoin project going on as well that has drained my account.

$99 /year for Apple
$25 one time fee

0.4BTC would cover 3 years of Apple and the Android developer cost.

I'm not really asking for donations, I'm just saying. If you'd like to donate it'd be appreciated and I'd get the apps on the markets as soon as the developer accounts were paid. Both apps would remain free in the market.

I'm also looking for feedback.

This is an example of a signed raw transaction encoded into a QR code.

Are you actually a developer? Or just wanting to start a project? I'm a developer with 20 years experience and was briefly talking to another member about this very same idea. If you have some other projects you've worked on I'd love to see. What experience do you have? I'm fluent in Obj C, C++, C#, PHP, JS(node.js).

I could do this. I build RaspPi bitcoin miner controllers in bulk. It'd be nothing hard to do a ticker.

I'll do it for .1 BTC. I'll even host it on a dedicated box for .4 BTC

Looks like you're using Bootstrap for your frontend? Do you  use Skype? add me: artw1982  I have 2 major projects I'm working on that I could use some help with.

What skills do you have to offer?

I'll sell you 4 for .25 BTC. 4 of these can run up to 32 miners. By payment address is in my signature. I also sell them on eBay for $89. I believe I'm the only one on eBay selling them.

3dhouse, that has some good potential. I like it.

Aren't those servers a bit overkill to run ASIC miners? I could build and sell you Raspberry Pi controllers for around $80 each and you'd save thousands on the electric bill. And with the upcoming Scrypt ASIC's I''d stay away from the video card hashing. Hold off and invest your money in the new ASICs.

I added you to my skype Guac. I"m working so I may not respond right away, but I will. Let's get this going. I'll provide the cloud backup too.

Guac, if you use Skype add me. artw1982 

If it's an SHA based coin that can be mined with ASIC miners I'll provide servers long-term.

I'm interested in the idea and the development.

I'd be interested in teaming up with you if you're looking for another developer to help out.

Suppose I don't understand.

Due to work I wasn't able to finish my submission in time for this. I will be listing it on the site though. Guess someone just made out some quick BTC with this. :-)

Thanks to the few that participated. I have chosen one logo already and have paid a bounty. I was hoping for a few more entries for the second.

If you're wanting an SHA based coin we can talk.

Any interest in this at all?

Coin Collab allows a group of users to create a collaborated project that will auto split Bitcoin shares according to predefined and approved percentages. Once a collaboration is created and approved by all collaborators the project can not be stopped, edited or deleted without approval from all collaborators.

Scenario:
Three friends, Jimmy, Bob and Jane do a group buy for a new Bitcoin miner. Jimmy and Jane decides to allow Bob to host the miner. Now Jimmy and Jane must trust Bob to split the Bitcoin mined. Jimmy, Jane and Bob don't know each other and live in 3 different states.

With Coin Collab Bob creates a collaboration project and invites Jimmy and Jane to be collaborators. Bob set's the intended share percentage for each collaborator. Jimmy and Jane get an email notifying them of a new collaboration. They click the link and are shown the percentage of shares they are to receive. If Jimmy and Jane approve they simply enter their Bitcoin address and hit 'approve'. Now Bob sets up the miner and points the payouts to the projects Bitcoin address. Each payment is auto split and dispersed without human interaction. Jimmy and Jane can monitor revenue input by logging into their Coin Collab account.


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