<oembed><type>rich</type><version>1.0</version><author_name>npub1ppn2nhlfdzkw9gw0ytljpef5dpyzsxzw8ffcyykamt32hw6pge0smhs2fw</author_name><author_url>https://nostr.ae/npub1ppn2nhlfdzkw9gw0ytljpef5dpyzsxzw8ffcyykamt32hw6pge0smhs2fw</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2018-02-08&#xA;📝 Original message:&#xA;An obvious way to make this compatible with proof-of-payment would be to &#xA;require two hashes to claim the HTLC: the presage from the invoice payment &#xA;hash (as today) + the new hash introduced here. This would give the sender &#xA;a receipt after only one of the HTLCs was claimed. Would require changes to &#xA;the scripts of course.&#xA;With Schnorr/EC operations this could probably be made more elegant, as &#xA;mentioned.&#xA;&#xA;- Johan&#xA;On Wed, Feb 7, 2018 at 18:21, Rusty Russell &lt;rusty at rustcorp.com.au&gt; wrote:&#xA;Olaoluwa Osuntokun &lt;laolu32 at gmail.com&gt; writes:&#xA; &gt; Hi Y&#39;all,&#xA; &gt;&#xA; &gt; A common question I&#39;ve seen concerning Lightning is: &#34;I have five $2&#xA; &gt; channels, is it possible for me to *atomically* send $6 to fulfill a&#xA; &gt; payment?&#34;. The answer to this question is &#34;yes&#34;, provided that the &#xA;receiver&#xA;&#xA;This is awesome! I&#39;m kicking myself for not proposing it :)&#xA;&#xA;Unfortunately, your proposal defines a way to make multipath donations,&#xA;not multipath payments :(&#xA;&#xA;In other words, you&#39;ve lost proof of payment, which IMHO is critical.&#xA;&#xA;Fortunately, this can be fairly trivially fixed when we go to scriptless&#xA;scripts or other equivalent decorrelation mechanism, when I think this&#xA;mechanism becomes extremely powerful.&#xA;&#xA; &gt; - Potential fee savings for larger payments, contingent on there being a&#xA; &gt; super-linear component to routed fees. It&#39;s possible that with&#xA; &gt; modifications to the fee schedule, it&#39;s actually *cheaper* to send&#xA; &gt; payments over multiple flows rather than one giant flow.&#xA;&#xA;This is a stretch. I&#39;d stick with the increased reliability/privacy&#xA;arguments which are overwhelmingly compelling IMHO.&#xA;&#xA;If I have any important feedback on deeper reading (and after a sccond&#xA;coffee), I&#39;ll send a separate email.&#xA;&#xA;Thanks!&#xA;Rusty.&#xA;_______________________________________________&#xA;Lightning-dev mailing list&#xA;Lightning-dev at lists.linuxfoundation.org&#xA;https://lists.linuxfoundation.org/mailman/listinfo/lightning-dev&#xA;-------------- next part --------------&#xA;An HTML attachment was scrubbed...&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/lightning-dev/attachments/20180208/ec4e6b34/attachment.html&gt;</html></oembed>