<oembed><type>rich</type><version>1.0</version><author_name>npub1azvhdrf9fu6n0tm7yez4j6zcxcedp2ct6nrcq3z74naqs7kgpk8s5t2krq</author_name><author_url>https://nostr.ae/npub1azvhdrf9fu6n0tm7yez4j6zcxcedp2ct6nrcq3z74naqs7kgpk8s5t2krq</author_url><provider_name>njump</provider_name><provider_url>https://nostr.ae</provider_url><html>📅 Original date posted:2015-09-28&#xA;📝 Original message:SPV wallets in their current form are inherently insecure. Moreover, while we at least have a soft fork mechanism that is not trivially exploitable (yes, it&#39;s got issues...but unlike SPV wallets, it isn&#39;t so easily exploitable), we have NO hard fork mechanism in place that isn&#39;t highly prone to systemic consensus failure.&#xA;&#xA;But I think pretty much anyone who hasn&#39;t been in a coma for the last several years knows this...and I&#39;ll stop repeating the obvious.&#xA;&#xA;On September 28, 2015 5:26:17 AM PDT, Mike Hearn &lt;hearn at vinumeris.com&gt; wrote:&#xA;&gt;&gt;&#xA;&gt;&gt; Go ahead and object to soft forks...but at least try not to make&#xA;&gt;arguments&#xA;&gt;&gt; based on changing the definitions of terms we all generally agree&#xA;&gt;upon.&#xA;&gt;&gt;&#xA;&gt;&#xA;&gt;I don&#39;t intend to do that, and I don&#39;t think I am - I know what the&#xA;&gt;difference between a soft and hard fork is and am not trying to confuse&#xA;&gt;or&#xA;&gt;blur the two.&#xA;&gt;&#xA;&gt;To reiterate: this current BIP implements a soft fork. I am not&#xA;&gt;debating&#xA;&gt;that. I am saying it should use a hard fork instead. This will ensure&#xA;&gt;no&#xA;&gt;repeat of the P2SH case where invalid blocks were being found for weeks&#xA;&gt;(or&#xA;&gt;was it months?) after the new rules kicked in, thus exposing SPV&#xA;&gt;wallets&#xA;&gt;and old nodes to unnecessary risk for no benefit.&#xA;&gt;&#xA;&gt;Additionally, I am making it clear that there&#39;s no consensus for&#xA;&gt;rolling&#xA;&gt;out the new opcode in this way. As you say, the mechanism has issues.&#xA;&gt;If&#xA;&gt;you read the comments when I wrote my article, you can see that others&#xA;&gt;share the same concerns:&#xA;&gt;&#xA;&gt;https://www.reddit.com/r/Bitcoin/comments/3griiv/on_consensus_and_forks_by_mike_hearn&#xA;&#xA;-- &#xA;Sent from my Android device with K-9 Mail. Please excuse my brevity.&#xA;-------------- next part --------------&#xA;An HTML attachment was scrubbed...&#xA;URL: &lt;http://lists.linuxfoundation.org/pipermail/bitcoin-dev/attachments/20150928/cacc6b6d/attachment.html&gt;</html></oembed>