joshua/dash-docs
1
0
Fork 0
mirror of https://github.com/seigler/dash-docs synced 2025-07-27 09:46:12 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Alerts: SPV mining suggested changes

Browse source
This commit is contained in:
David A. Harding 2015-07-04 05:23:32 -04:00
parent 818abdb2ee
commit c04bfa6832
No known key found for this signature in database
GPG key ID: 4B29C30FF29EC4B7
1 changed files with 8 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

27
_alerts/2015-07-04-spv-mining.html
View file

@ -7,14 +7,16 @@ banner: "WARNING: many wallets currently vulnerable to double-spending of confir
<p><em>This document is being updated as new information arrives. Last <p><em>This document is being updated as new information arrives. Last
update: 2015-07-04 09:00 UTC</em></p> update: 2015-07-04 09:00 UTC</em></p>
{% assign confs="15" %} {% assign confs="30" %}
<h2 id="summary">Summary</h2> <h2 id="summary">Summary</h2>
<p>Your bitcoins are safe if you received them in transactions confirmed before 2015-07-04 08:00 UTC.</p> <p>Your bitcoins are safe if you received them in transactions confirmed before 2015-07-04 08:00 UTC.</p>
<p>After that time, confirmation scores are not as reliable as they <p>However, there has been a problem with a planned upgrade. For
usually are for users of certain software:</p> bitcoins received later than the time above, confirmation scores are
significantly less reliable then they usually are for users of
certain software:</p>
<ul> <ul>
<li><b>Lightweight (SPV) wallet users</b> should wait an additional {{confs}} <li><b>Lightweight (SPV) wallet users</b> should wait an additional {{confs}}
@ -72,12 +74,9 @@ real.
consensus rules. <a href="/en/download">Upgrade</a> is recommended consensus rules. <a href="/en/download">Upgrade</a> is recommended
to return to full node security.</li> to return to full node security.</li>
<li><b>Lightweight (SPV) wallets</b> are not safe until all the major <li><b>Lightweight (SPV) wallets</b> are not safe for less than
pools switch to full validation. After all the major pools fix {{confs}} confirmations until all the major pools switch to full
their problems, lightweight wallets will remain vulnerable to one, validation.</li>
two, or rarely three confirmation double spends until near 100% of
total hash rate has upgraded to a BIP66-compliant version of
Bitcoin Core.</li>
<li><b>Web wallets</b> are very diverse in what infrastructure they <li><b>Web wallets</b> are very diverse in what infrastructure they
run and how they handle double spends, so unless you know for sure run and how they handle double spends, so unless you know for sure
@ -125,16 +124,6 @@ real.
current recommendation of waiting {{confs}} extra confirmations to a current recommendation of waiting {{confs}} extra confirmations to a
lower number.</p> lower number.</p>
<p>However, the BIP66 soft fork implementation method of waiting for
only 95% of miners to upgrade does leave miner-trusting software such
as lightweight wallets at increased risk of seeing invalid single
confirmations (10% risk), invalid double confirmations (1% risk), and
maybe even invalid triple confirmations (0.1% risk) until more of
the 5% non-upgraded miners do finally upgrade. So for the next
several weeks (maybe months), lightweight wallet users, web wallet
users, and users of old versions of Bitcoin Core should wait an extra
two to three confirmations.</p>
<!-- <!--
<div style="text-align:right"> <div style="text-align:right">
<i>This notice last updated: 2015-07-04 06:00 UTC</i> <i>This notice last updated: 2015-07-04 06:00 UTC</i>