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To: bitcoin-development@lists.sourceforge.net
From: Andreas Schildbach <andreas@schildbach.de>
Date: Mon, 23 Feb 2015 01:48:29 +0100
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References: <20150222190839.GA18527@odo.localdomain>
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In-Reply-To: <20150222190839.GA18527@odo.localdomain>
Subject: Re: [Bitcoin-development] Bitcoin at POS using BIP70,
 NFC and offline payments - implementer feedback
Precedence: list

Jan, this is great stuff! Thanks for sharing your experiences.

I think the 4k payments requests issue must be solvable somehow. I had
no trouble transmitting that amount via NFC, although yes a bit of delay
was noticable.

About payment_url: Protobuf allows changing optional to repeated and yes
it's backwards compatible. Which is why I'm personally against parsing
two fields rather than just one.

> 2) @Andreas: Is the r, r1, r2 mechanism already implemented in Bitcoin Wallet?

No it isn't. It's implemented in bitcoinj though.