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+---
+layout: forum
+title: 'Re: Major Meltdown'
+grand_parent: Forum Posts
+parent: Bitcoin Forum
+nav_order: 173
+date: 2010-07-10 13:36:17 UTC
+original: https://bitcointalk.org/index.php?topic=202.msg2133#msg2133
+---
+
+# Re: Major Meltdown
+---
+
+<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight">
+<code>Re: Major Meltdown
+July 10, 2010, 01:36:17 PM
+
+<a href="https://bitcointalk.org/index.php?topic=202.msg1920#msg1920">Quote from: llama on July 01, 2010, 10:21:47 PM</a>
+-------------
+However, if something happened and the signatures were compromised (perhaps integer factorization is solved, quantum computers?), then even agreeing upon the last valid block would be worthless.
+-------------
+
+True, if it happened suddenly.  If it happens gradually, we can still transition to something stronger.  When you run the upgraded software for the first time, it would re-sign all your money with the new stronger signature algorithm.  (by creating a transaction sending the money to yourself with the stronger sig)</code></pre></div></div>