<div dir="ltr">We have removed the BIP70 field extensions from this BIP and will save that for another time. A PR to add our documentation to the main repo has been submitted.<div><br></div><div>James</div></div><br><div class="gmail_quote"><div dir="ltr">On Sat, Mar 12, 2016 at 8:36 AM Andreas Schildbach via bitcoin-dev <<a href="mailto:bitcoin-dev@lists.linuxfoundation.org">bitcoin-dev@lists.linuxfoundation.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Replying to the "fee" part of BIP75 (which as already noted should go to<br>
a different BIP number imho):<br>
<br>
It makes to sense to let the payee define a fee *rate*. The payee<br>
doesn't know anything about how the payer's wallet is structured. In<br>
extreme cases, as a payer I would keep all my tiny UTXOs (which would be<br>
unspendable in a economic way) for the one payee who is willing to pay a<br>
high enough rate...<br>
<br>
Rather, I propose an absolute amount that the payee is willing to cover<br>
should be declared.<br>
<br>
Also, in order to avoid disputes I suggest the amount should be deducted<br>
from the BIP70 payment message amount already. A wallet which<br>
understands BIP75fee would add these two up for *display* puposes only.<br>
The wallet should continue to use the existing fee policies. If it can<br>
send the amount as specified by BIP70 and the fee is below the BIP75fee<br>
amount, it would not mention any fees to the user. If it exceeds, it<br>
would display just the exceeding amount.<br>
<br>
<br>
<br>
<br>
On 03/11/2016 11:43 PM, Justin Newton via bitcoin-dev wrote:<br>
> I think we would be open to either leaving them in, or doing a separate<br>
> BIP. What do others think? I’d prefer to keep them together if the<br>
> changes are non-controversial just to cut down on #of BIP’s, but thats<br>
> not a strong preference.<br>
><br>
> On Fri, Mar 11, 2016 at 3:54 AM, Andreas Schildbach via bitcoin-dev<br>
> <<a href="mailto:bitcoin-dev@lists.linuxfoundation.org" target="_blank">bitcoin-dev@lists.linuxfoundation.org</a><br>
> <mailto:<a href="mailto:bitcoin-dev@lists.linuxfoundation.org" target="_blank">bitcoin-dev@lists.linuxfoundation.org</a>>> wrote:<br>
><br>
> I think it's a bad idea to pollute the original idea of this BIP with<br>
> other extensions. Other extensions should go to separate BIPs,<br>
> especially since methods to clarify the fee have nothing to do with<br>
> secure and authenticated bi-directional BIP70 communication.<br>
><br>
><br>
> On 03/10/2016 10:43 PM, James MacWhyte via bitcoin-dev wrote:<br>
> > Hi everyone,<br>
> ><br>
> > Our BIP (officially proposed on March 1) has tentatively been assigned<br>
> > number 75. Also, the title has been changed to "Out of Band Address<br>
> > Exchange using Payment Protocol Encryption" to be more accurate.<br>
> ><br>
> > We thought it would be good to take this opportunity to add some<br>
> > optional fields to the BIP70 paymentDetails message. The new<br>
> fields are:<br>
> > subtractable fee (give permission to the sender to use some of the<br>
> > requested amount towards the transaction fee), fee per kb (the minimum<br>
> > fee required to be accepted as zeroconf), and replace by fee<br>
> (whether or<br>
> > not a transaction with the RBF flag will be accepted with zeroconf). I<br>
> > know it doesn't make much sense for merchants to accept RBF with<br>
> > zeroconf, so that last one might be used more to explicitly refuse RBF<br>
> > transactions (and allow the automation of choosing a setting based on<br>
> > who you are transacting with).<br>
> ><br>
> > I see BIP75 as a general modernization of BIP70, so I think it<br>
> should be<br>
> > fine to include these extensions in the new BIP, even though these<br>
> > fields are not specific to the features we are proposing. Please<br>
> take a<br>
> > look at the relevant section and let me know if anyone has any<br>
> concerns:<br>
> ><br>
> <a href="https://github.com/techguy613/bips/blob/master/bip-0075.mediawiki#Extending_BIP70_PaymentDetails" rel="noreferrer" target="_blank">https://github.com/techguy613/bips/blob/master/bip-0075.mediawiki#Extending_BIP70_PaymentDetails</a><br>
> ><br>
> > The BIP70 extensions page in our fork has also been updated.<br>
> ><br>
> > Thanks!<br>
> ><br>
> > James<br>
> ><br>
> ><br>
> > _______________________________________________<br>
> > bitcoin-dev mailing list<br>
> > <a href="mailto:bitcoin-dev@lists.linuxfoundation.org" target="_blank">bitcoin-dev@lists.linuxfoundation.org</a><br>
> <mailto:<a href="mailto:bitcoin-dev@lists.linuxfoundation.org" target="_blank">bitcoin-dev@lists.linuxfoundation.org</a>><br>
> > <a href="https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev" rel="noreferrer" target="_blank">https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev</a><br>
> ><br>
><br>
><br>
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><br>
><br>
><br>
><br>
> --<br>
><br>
> Justin W. Newton<br>
> Founder/CEO<br>
> Netki, Inc.<br>
><br>
> <a href="mailto:justin@netki.com" target="_blank">justin@netki.com</a> <mailto:<a href="mailto:justin@netki.com" target="_blank">justin@netki.com</a>><br>
> +1.818.261.4248 <tel:+1.818.261.4248><br>
><br>
><br>
><br>
><br>
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</blockquote></div>