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Gregory Maxwell 2012-02-19 19:11:16 -05:00
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<div class="container"> <div class="container">
<section id="feb20"> <section id="feb20">
<h1>February 20, 2012 Protocol Changes</h1> <h1>February 20, 2012 Protocol Changes</h1>
<h4><b>Summary:</b> Nothing is required of you right now.<br/>
In the unlikely event that something breaks on/after February 20th, come back here.</h4>
<hr width="75%"/>
<p> <p>
In June 2010 the Bitcoin reference software version 0.2.10 introduced In June 2010 the Bitcoin reference software version 0.2.10 introduced
a change to the protocol: the 'version' messages exchanged by nodes a change to the protocol: the 'version' messages exchanged by nodes
@ -15,26 +12,30 @@ values to detect corruption by broken networks.
</p><p> </p><p>
All other messages already carry a checksum (for connections between All other messages already carry a checksum (for connections between
nodes 0.2.9 and later) but the version messages themselves could not nodes 0.2.9 and later) but the version messages themselves could not
be changed in a compatible way, so this change was delayed and does not take effect until be changed in a compatible way, so this change was delayed and did not take effect until
<a href="http://www.timeanddate.com/worldclock/fixedtime.html?msg=Bitcoin+protocol+change&iso=20120220T00">midnight UTC on Feb 20th 2012</a> <a href="http://www.timeanddate.com/worldclock/fixedtime.html?msg=Bitcoin+protocol+change&iso=20120220T00">midnight UTC on Feb 20th 2012</a>
to leave users time to upgrade. to leave users time to upgrade.
</p><p> </p><p>
The developers of the Bitcoin reference software are unable to find The developers of the Bitcoin reference software are unable to find
any evidence of any nodes still running software prior to 0.2.10 on any evidence of any nodes still running software prior to 0.2.10 on
the network. If any nodes with software this old the network. If any nodes with software this old
do still exist, they will no longer be able to connect to newer nodes do still exist, they will no longer be able to connect to newer nodes.
after this date.
</p><p> </p><p>
This switchover has been tested and no significant disruption is This switchover has been tested and no significant disruption is
expected. Nodes with incorrect clocks may have a difficult expected and none has been observed so far.
Nodes with incorrect clocks may have a difficult
time making new connections for a brief period around the switchover time making new connections for a brief period around the switchover
time. time.
</p><p> </p><p>
Please report any new connectivity issues to the <a
href="http://webchat.freenode.net/?channels=bitcoin-dev&uio=d4">#bitcoin-dev
channel</a> on Freenode IRC.
</p><p>
If there are unexpected difficulties this page will be updated with If there are unexpected difficulties this page will be updated with
relevant information. relevant information.
</p> </p>
<div style="text-align:right"> <div style="text-align:right">
<i>This notice last updated: Sun Feb 19 18:56:58 UTC 2012</i> <i>This notice last updated: Mon Feb 20 00:10:00 UTC 2012</i>
</div> </div>
</section> </section>
</div> </div>