📅 Original date posted:2014-01-13 📝 Original message:> I was thinking that people could upload a payment protocol file somewhere > once (like to their personal web page, or shared via dropbox or google > drive or some custom new pastebin style service), and then just encode a > regular bitcoin URI into the qrcode on the billboard. That does require trusting the third party not to later tamper with the payment request, though. (I'm assuming that a signed payment request is not always going to be all that useful in the case of private individuals, even assuming the payee is willing to sign up for one.) > Likewise, I could attach a payment request to an email and send it to you, > and now you can pay me whenever you want forever. That certainly sounds like a plausible use case. You do still have the problem that e-mail is an insecure channel, but it's no worse than exchanging Bitcoin addreses over e-mail as things stand at the moment. roy