<oembed><type>rich</type><version>1.0</version><author_name>npub10f96gqrsu4qpygfgvuvzce47aavjvql703egfde0l2hua8dzpszs67ej47</author_name><author_url>https://nostr.ae/npub10f96gqrsu4qpygfgvuvzce47aavjvql703egfde0l2hua8dzpszs67ej47</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2015-05-10&#xA;📝 Original message:Le 11/05/2015 00:31, Mark Friedenbach a écrit :&#xA;&gt; I&#39;m on my phone today so I&#39;m somewhat constrained in my reply, but the key&#xA;&gt; takeaway is that the proposal is a mechanism for miners to trade subsidy&#xA;&gt; for the increased fees of a larger block. Necessarily it only makes sense&#xA;&gt; to do so when the marginal fee per KB exceeds the subsidy fee per KB. It&#xA;&gt; correspondingly makes sense to use a smaller block size if fees are less&#xA;&gt; than subsidy, but note that fees are not uniform and as the block shrinks&#xA;&gt; the marginal fee rate goes up..&#xA;&gt; &#xA;&#xA;Oh I see, you expect the sign of the dE/dx to change depending on&#xA;whether fees exceed the subsidy. This is possible, but instead of the&#xA;linear identity, you have to increase the block size twice as fast as&#xA;the difficulty. In that case we would get (using the notations of my&#xA;previous email):&#xA;&#xA;D&#39; = D(1+x)&#xA;F&#39; = F(1+2x)&#xA;&#xA;and thus:&#xA;&#xA;E&#39; - E = x/(1+x)P(F-S)&#xA;&#xA;The presence of the (F-S) factor means that the sign reversal occurs&#xA;when fees exceed subsidy.&#xA;&#xA;&#xA;&gt; Limits on both the relative and absolute amount a miner can trade subsidy&#xA;&gt; for block size prevent incentive edge cases as well as prevent a sharp&#xA;&gt; shock to the current fee-poor economy (by disallowing adjustment below 1MB).&#xA;&gt; &#xA;&gt; Also the identity transform was used only for didactic purposes. I fully&#xA;&gt; expect there to be other, more interesting functions to use.</html></oembed>