<oembed><type>rich</type><version>1.0</version><author_name>npub17ty4mumkv43w8wtt0xsz2jypck0gvw0j8xrcg6tpea25z2nh7meqf4qgyd</author_name><author_url>https://nostr.ae/npub17ty4mumkv43w8wtt0xsz2jypck0gvw0j8xrcg6tpea25z2nh7meqf4qgyd</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2015-02-12&#xA;📝 Original message:&gt;&#xA;&gt; You can prove a doublespend instantly by showing two conflicting&#xA;&gt; transactions both signed by thar party. This pair can be distributed as a&#xA;&gt; proof of malice globally in seconds via a push messaging mechanism.&#xA;&gt;&#xA;There have been lots of e-cash schemes proposed in the academic literature&#xA;that work like this, or variants of it. Schemes where participants are&#xA;anonymous until they double spend are popular.&#xA;&#xA;Let&#39;s re-write your proposal but substituting the word notary for miner:&#xA;&#xA;To profit, the *miner* would have to be sure the payout from agreeing on&#xA;collusion (or to perform the doublespend themselves) would pay out better&#xA;than acting honestly for a given amount of time info the future. This means&#xA;transactions for small sums are secure.&#xA;&#xA;&#xA;That&#39;s the exact argument we&#39;re having. The assertion is that a &#34;rational&#34;&#xA;notary would kill his own business to increase his profits in the next few&#xA;hours. So you&#39;re just arguing that a notary is different to a miner,&#xA;without spelling out exactly why.&#xA;&#xA;Does the notary have to make a big up front investment? If so, why is that&#xA;different to mining investment?&#xA;&#xA;Is the notary non-anonymous and afraid of being charged with payment fraud?&#xA;If so, note that big miners do lots of non-anonymous things too, like&#xA;renting warehouses and importing specialised equipment.&#xA;&#xA;Is it because of the big up front collateral they&#39;re meant to have lying&#xA;around? If so, how do you ensure a fluid market for notaries?&#xA;-------------- next part --------------&#xA;An HTML attachment was scrubbed...&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20150212/9ac6414a/attachment.html&gt;</html></oembed>