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From: Gavin Andresen <gavinandresen@gmail.com>
To: Mike Hearn <mike@plan99.net>,
	 Bitcoin Dev <bitcoin-development@lists.sourceforge.net>
Subject: Re: [Bitcoin-development] Floating fees and SPV clients
Date: Tue, 3 Dec 2013 21:54:41 +1000	[thread overview]
Message-ID: <CABsx9T2CLBV7Xnx8ePEonYnr7HTZDRi14=ZhQeNznftL9Mj7Uw@mail.gmail.com> (raw)
In-Reply-To: <CANEZrP1Ef7P_bvE_qY+CsXG02=jGx8f4DrDKweSo7AAXLjeWXQ@mail.gmail.com>

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>
> A merchant can always refuse the payment and refund it if that's a
> practical problem.
>

No, they can't, at least not in bitcoin-qt:  when the user pokes the SEND
button, the transaction is broadcast on the network, and then the merchant
is also told with the Payment/PaymentACK round-trip.

Allowing merchants to cancel (e.g. having a PaymentNACK) makes
implementation harder, and brings up nasty issues if we want to allow
CoinJoin or CoinJoin-like transactions as payments to merchants.
 Bitcoin-Qt ALREADY allows you to pay several PaymentRequests with one
transaction; handling the case where one merchant gives you a PaymentACK
and another gives you (or wants to give you) a PaymentNACK is a nightmare.

--
Gavin Andresen

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  reply	other threads:[~2013-12-03 11:54 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-12-01 11:51 [Bitcoin-development] Floating fees and SPV clients Mike Hearn
2013-12-01 12:15 ` Andreas Schildbach
2013-12-01 13:41   ` Mike Hearn
2013-12-01 16:50     ` Andreas Schildbach
2013-12-01 17:19       ` Mike Hearn
2013-12-01 17:40         ` Andreas Schildbach
2013-12-01 17:52           ` Mike Hearn
2013-12-01 18:12         ` Peter Todd
2013-12-01 18:18           ` Mike Hearn
2013-12-01 18:37             ` Peter Todd
2013-12-02 13:54         ` Patrick Mead
2013-12-02 14:33           ` Mike Hearn
2013-12-02 14:37             ` Jeff Garzik
2013-12-02 14:44               ` Mike Hearn
2013-12-02 14:47                 ` Jeff Garzik
2013-12-03  1:40                 ` Gavin Andresen
2013-12-03 10:06                   ` Mike Hearn
2013-12-03 10:36                     ` Drak
2013-12-03 10:45                       ` Mike Hearn
2013-12-03 11:04                         ` Drak
2013-12-03 11:07                     ` Gavin Andresen
2013-12-03 11:29                       ` Mike Hearn
2013-12-03 11:37                         ` Peter Todd
2013-12-03 11:41                         ` Gavin Andresen
2013-12-03 11:46                           ` Mike Hearn
2013-12-03 11:54                             ` Gavin Andresen [this message]
2013-12-03 12:05                             ` Drak
2013-12-03 11:57                         ` Taylor Gerring
2013-12-03 12:07                           ` Peter Todd
2013-12-03 13:20                             ` Jamie McNaught
2013-12-03 13:20                           ` Mike Hearn
2013-12-03 13:48                             ` Taylor Gerring
2013-12-03 13:54                               ` Mike Hearn
2013-12-03 14:42                             ` Quinn Harris
2013-12-04  1:45                       ` Jeremy Spilman
2013-12-04 10:40                         ` Mike Hearn
2013-12-04 10:57                           ` Peter Todd
2013-12-04 11:09                             ` Mike Hearn
2013-12-04 13:06                               ` Peter Todd
2013-12-04 13:48                                 ` Mike Hearn
2013-12-04 21:51                                   ` Peter Todd
2013-12-03 11:03                   ` Peter Todd
2013-12-03 11:09                     ` Drak
2013-12-03 11:33                       ` Peter Todd
2013-12-04  5:50                   ` kjj
2013-12-03 11:31 ` Peter Todd

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