diff --git a/index.html b/index.html
index bac5693..e7b909e 100644
--- a/index.html
+++ b/index.html
@@ -49,6 +49,7 @@
             <li class="dropdown" id="crCurrency">
               <a class="dropdown-toggle" data-toggle="dropdown" href="#" id="crSelect"><span id="crName">BTC</span>&nbsp;<b class="caret">&nbsp;</b></a>
               <ul class="dropdown-menu scrollable-menu">
+		<!-- prefix bytes, usually contains in the source code of bitcoin-based altcoins, in "/src/chainparams.cpp" -->
                 <!-- data target is "address_version,privatekey_version (optional)", privatekey_version is address_version+128 by default -->
                 <!-- data target is "compressed/uncompressed,address_version,privatekey_version (optional)", privatekey_version is address_version+128 by default -->
 				<!--
@@ -108,7 +109,8 @@
                 <li><a data-target="0x50" href="http://bit.usr.sh:2750"><span class="pull-right">ZET</span>Zetacoin</a></li>
 				<li><a class="selected" data-target="compressed, 0x26, 0xa6" strMessageMagic="Geertcoin Signed Message:\n" href="https://prohashing.com/explorer/Geertcoin/"><span class="pull-right">GEERT</span>GeertCoin</a></li>
 				<li><a data-target="uncompressed, 0x1a, 0x9a" strMessageMagic="Beachcoin Signed Message:\n" href="https://prohashing.com/explorer/Beachcoin/"><span class="pull-right">SAND</span>BeachCoin</a></li>
-				<li><a data-target="compressed, 0x07, 0xc6" href="https://miner-control.de/explorer/CGUR"><span class="pull-right">CGUR</span>AllCoinGuru</a></li>
+				<li><a data-target="uncompressed, 0x07, 0xc6" href="https://miner-control.de/explorer/CGUR"><span class="pull-right">CGUR</span>AllCoinGuru</a></li>
+				<li><a data-target="compressed, 39, 167" href="https://chainz.cryptoid.info/gun/"><span class="pull-right">GUN</span>Guncoin</a></li>
 				<li><a data-target="" href="https://waveswallet.io/"><span class="pull-right">WAVES</span>Waves</a></li>
 				<!--test
 				<li><a data-target="" href=""><span class="pull-right">TEST1</span>0</a></li>