Transaction

j"1LAnZuoQdcKCkpDBKQMCgziGMoPC4VQUckM<div class="post">SHA-256 is very strong.&nbsp; It's not like the incremental step from MD5 to SHA1.&nbsp; It can last several decades unless there's some massive breakthrough attack.<br/><br/>If SHA-256 became completely broken, I think we could come to some agreement about what the honest block chain was before the trouble started, lock that in and continue from there with a new hash function.<br/><br/>If the hash breakdown came gradually, we could transition to a new hash in an orderly way.&nbsp; The software would be programmed to start using a new hash after a certain block number.&nbsp; Everyone would have to upgrade by that time.&nbsp; The software could save the new hash of all the old blocks to make sure a different block with the same old hash can't be used. </div> text/html