<oembed><type>rich</type><version>1.0</version><author_name>npub1e46n428mcyfwznl7nlsf6d3s7rhlwm9x3cmkuqzt3emmdpadmkaqqjxmcu</author_name><author_url>https://nostr.ae/npub1e46n428mcyfwznl7nlsf6d3s7rhlwm9x3cmkuqzt3emmdpadmkaqqjxmcu</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2015-09-16&#xA;📝 Original message:I only have one &#34;correction&#34;, included inline.&#xA;&#xA;On 09/16/15 21:32, Jeff Garzik via bitcoin-dev wrote:&#xA;&gt; &#xA;&gt; During Scaling Bitcoin, Bitcoin Core committers and notable contributors&#xA;&gt; got together and chatted about where a &#34;greatest common denominator&#34;&#xA;&gt; type consensus might be.  The following is a without-attribution&#xA;&gt; (Chatham House) summary.  This is my own personal summary of the chat;&#xA;&gt; any errors are my own; this is _not_ a consensus statement or anything&#xA;&gt; formal.&#xA;&gt; &#xA;&gt; - Background (pre-conference, was on public IRC): &#34;net-utxo&#34;,&#xA;&gt; calculating transaction size within block by applying a delta to&#xA;&gt; transaction size based on the amount of data added, or removed, from the&#xA;&gt; UTXO set.  Fee is then evaluated after the delta is applied.  This&#xA;&gt; aligns user incentives with UTXO resource usage/cost.  Original idea by&#xA;&gt; gmaxwell (and others??).&#xA;&gt; &#xA;&gt; - Many interested or at least willing to accept a &#34;short term bump&#34;, a&#xA;&gt; hard fork to modify block size limit regime to be cost-based via&#xA;&gt; &#34;net-utxo&#34; rather than a simple static hard limit.  2-4-8 and 17%/year&#xA;&gt; were debated and seemed &#34;in range&#34; with what might work as a short term&#xA;&gt; bump - net after applying the new cost metric.&#xA;&#xA;I would be careful to point out that hard numbers were deliberately NOT&#xA;discussed. Though some general things were thrown out, they were not&#xA;extensively discussed nor agreed to. I personally think 2-4 is &#34;in&#xA;range&#34;, though 8 maybe not so much. Of course it depends on exactly how&#xA;the non-blocksize limit accounting/adjusting is done.&#xA;&#xA;Still, the &#34;greatest common denominator&#34; agreement did not seem to be&#xA;agreeing to an increase which continues over time, but which instead&#xA;limits itself to a set, smooth increase for X time and then requires a&#xA;second hardfork if there is agreement on a need for more blocksize at&#xA;that point.&#xA;&#xA;&#xA;&gt; - Hard fork method:  Leaning towards &#34;if (timestamp &gt; X)&#34; flag day hard&#xA;&gt; fork Y months in the future.  Set high bit in version, resulting in a&#xA;&gt; negative number, to more cleanly fork away.  &#34;miner advisement&#34; -&#xA;&gt; miners, as they&#39;ve done recently, signal non-binding (Bitcoin Core does&#xA;&gt; not examine the value) engineering readiness for a hard fork via&#xA;&gt; coinbase moniker.  Some fork cancellation method is useful, if&#xA;&gt; unsuccessful after Z time elapses.&#xA;&gt; &#xA;&gt; - As discussed publicly elsewhere, other forks may be signaled via&#xA;&gt; setting a bit in version, and then triggering a fork&#39;ing change once a&#xA;&gt; threshold is reached.&#xA;&gt; &#xA;&gt; Chat participants are invited to reply to this message with their own&#xA;&gt; corrections and comments and summary in their view.&#xA;&gt; &#xA;&gt; For the wider community, take this as one of many &#34;inputs&#34; described at&#xA;&gt; Scaling Bitcoin.  Over the next few months developers and the community&#xA;&gt; should evaluate everything discussed and work towards some concrete&#xA;&gt; proposal(s) that are implemented, tested and simulated in December in&#xA;&gt; Hong Kong.</html></oembed>