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From: Oleg Andreev <oleganza@gmail.com>
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Subject: [Bitcoin-development] Providing Payment Request within URI
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Hi,

I wonder if there is a standard way to put Payment Request data into =
bitcoin: URI or directly into QR code. The goal is to allow device to =
generate a multi-output payment request on its own, without relying on =
the server and x509 certificates. When scanned via QR code from, say, =
POS, it's pretty secure, so no additional authentication needed.

I'd like something like this:=20

bitcoin:?r=3Ddata://<base64url-encoded-payment-request>

If there's no standard for that, would it be a good idea to extend BIP72 =
this way?=