http://en.zaoniao.it/index.php?action=history&feed=atom&title=Block_Cementing 2026-05-15T09:24:42Z Revision history for this page on the wiki MediaWiki 1.32.0 http://en.zaoniao.it/index.php?title=Block_Cementing&diff=3689&oldid=prev 2019-04-23T04:06:16Z

<p>Created page with &quot;A term [https://bitcointalk.org/index.php?topic=130222.msg1392450#msg1392450 coined by Meni Rosenfeld] for the following miner policy: Ignore alternate chains if they cont...&quot;</p> <p><b>New page</b></p><div>A term [https://bitcointalk.org/index.php?topic=130222.msg1392450#msg1392450 coined by Meni Rosenfeld] for the following miner policy:<br /> <br /> Ignore alternate chains if they contradict more than N blocks of history known to this miner.<br /> <br /> This proposal is a possible way to combat double spends. If honest miners cement each block N blocks after it is received, an attacker has a deadline of N blocks for the release of his alternate chain that contains the double spend transaction (this in opposed to without cementing, where an attacker can theoretically wait a very long time while building his alternate chain, in the hopes of winning the race to build the longest chain.<br /> <br /> == Potential Problems ==<br /> Cementing has some potential problems, and might not be good in practice. From the thread linked above by Meni:<br /> <br /> '''I call this practice &quot;cementing&quot; and it has some problems, similar to what we would have if there was no blockchain at all. The basic idea is that a node could be stuck on &quot;the wrong version&quot; after being isolated and fed bad data from an attacker, and would have no way to recover even after being exposed to the honest network.<br /> <br /> '''<br /> <br /> ==Source==<br /> <br /> [http://bitcoin.it/ http://bitcoin.it/]<br /> [[Category:Mining]]<br /> ==See Also on BitcoinWiki==<br /> * [[BitMe]]<br /> * [[EUCX]]<br /> * [[Snowcron Bitcoin Engine]]<br /> * [[Virtex]]<br /> * [[Signal Trading]]</div>

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