Re: Launch of BitPay, worlds first smartphone-ewallet for bitcoins

Quote from: willphase on July 10, 2011, 10:24:08 AM

Quote from: tecshare on July 10, 2011, 08:41:03 AM

Please excuse me for being an ignorant newb here... but what is stopping people from just making a wallet file encoded in a QR code?

private keys are 256bits long. default wallet generates 100 pool keys plus whatever keys you've manually created - so say, 110 keys. That's 3250bytes.

Maximum data storage of a QR code is 2953 bytes¹

Will

There was a thread about a single address + private key encoded qr code (http://forum.bitcoin.org/index.php?topic=3716.20), so you can scan and own that bitcoin address (+private key!) . First thing you'll do is to transfer the coins, because the guy who generated the private key could could transfer the coins, if you wants to...

But this won't work for BitPay, because it is not a fully bitcoin node, so some web service would have to offer a "private key spend coins service" it could use.

working with bitcoin uri, just containing the address and a web service like instawallet.org is simple, easy and fast. I like it for smart phones.

I am working on a BitPay clone, that would be easily portable to android and Iphone (well, don't know what the apple market will say Cheesy

) and some other, if I'll find alternatives for the ZXing QR code scanner library...