<oembed><type>rich</type><version>1.0</version><author_name>npub1m230cem2yh3mtdzkg32qhj73uytgkyg5ylxsu083n3tpjnajxx4qqa2np2</author_name><author_url>https://nostr.ae/npub1m230cem2yh3mtdzkg32qhj73uytgkyg5ylxsu083n3tpjnajxx4qqa2np2</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2017-04-05&#xA;📝 Original message:On Wed, Apr 05, 2017 at 09:37:45PM +0000, Gregory Maxwell via bitcoin-dev wrote:&#xA;&gt; On that basis, I offer the following BIP draft for discussion.&#xA;&gt; This proposal does not prevent the attack in general, but only&#xA;&gt; inhibits covert forms of it which are incompatible with&#xA;&gt; improvements to the Bitcoin protocol.&#xA;&gt; &#xA;&gt; I hope that even those of us who would strongly prefer that&#xA;&gt; ASICBOOST be blocked completely can come together to support&#xA;&gt; a protective measure that separates concerns by inhibiting&#xA;&gt; the covert use of it that potentially blocks protocol improvements.&#xA;&#xA;While I&#39;m in favour of blocking covert usage of ASICBOOST, there&#39;s every reason&#xA;to block non-covert usage of it as well. In a low margin business like mining,&#xA;the advatange it gives is enormous - quite possibly 10x your profit margin -&#xA;and given that barrier free access to being able to purchase ASICs is already&#xA;an archilles heal for Bitcoin there is every reason to eliminate this legal&#xA;vulnerability. Additionally, it&#39;s a technical vulnerability as well: we want&#xA;getting into the ASIC manufacturing and design business to have as low barriers&#xA;to entry as is feasible, and the ASICBOOST exploit significantly increases the&#xA;minimum capital requirements to do so.&#xA;&#xA;Remember that the whole purpose of PoW is to destroy value on a level playing&#xA;field. Anything that inhibits a level playing field is an exploit. While this&#xA;isn&#39;t standard crypto - we can&#39;t fix every exploit completely - since we&#39;re&#xA;going to do a technical change to partially mitigate the ASCIBOOST exploit&#xA;there is every reason to fully mitigate it.&#xA;&#xA;-- &#xA;https://petertodd.org &#39;peter&#39;[:-1]@petertodd.org&#xA;-------------- next part --------------&#xA;A non-text attachment was scrubbed...&#xA;Name: signature.asc&#xA;Type: application/pgp-signature&#xA;Size: 455 bytes&#xA;Desc: Digital signature&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20170405/90b81cc9/attachment-0001.sig&gt;</html></oembed>