Thanks for your positive comments!

I take good notes about how to do first iteration and get sponsors. Also think a initial trial can be done easly.

I am wondering that because It is hard to ensure that the launch of the first balloon goes well (perhaps it falls quite near to the lanuch location or into the sea), could be a good idea to launch it with the qr code but not funds. And send the bitcoins to the qr addresss only after a successfull deployment of the device.

Let's think a little bit more about this idea and hope more feedback will come from community! Thanks everybody