diff --git a/index.html b/index.html
index cd35505..31d0a76 100644
--- a/index.html
+++ b/index.html
@@ -101,7 +101,7 @@
 						<div class="row">
 							<div class="col-md-4">
 								<h3><span class="glyphicon glyphicon-ok"></span> Open Source</h3>
-								<p>Coinbin is an open source web based wallet written in javascript and released under the <a href="LICENSE">MIT license</a> which means its free to use and edit.</p>
+								<p>Coinbin is an open source web based wallet written in javascript and released under the <a href="LICENSE">MIT license</a> which means it's free to use and edit.</p>
 							</div>
 
 							<div class="col-md-4">
@@ -1005,6 +1005,7 @@
 								<select class="form-control" id="coinjs_broadcast">
 									<option value="coinb.in">coinb.in (Bitcoin mainnet)</option>
 									<option value="blockr.io_bitcoinmainnet"> Blockr.io (Bitcoin mainnet)</option>
+									<option value="chain.so_bitcoinmainnet"> Chain.so (Bitcoin mainnet)</option>
 									<option value="blockr.io_litecoin"> Blockr.io (Litecoin)</option>
 								<!--	<option value="blockr.io_bitcointestnet"> Blockr.io (Bitcoin testnet)</option> -->
 								</select>
diff --git a/js/coinbin.js b/js/coinbin.js
index 49f53b1..7a150b9 100644
--- a/js/coinbin.js
+++ b/js/coinbin.js
@@ -936,6 +936,36 @@ $(document).ready(function() {
 		});
 	}
 
+	// broadcast transaction via blockr.io (mainnet)
+	function rawSubmitChainso_BitcoinMainnet(thisbtn){ 
+		$(thisbtn).val('Please wait, loading...').attr('disabled',true);
+		$.ajax ({
+			type: "POST",
+			url: "https://chain.so/api/v2/send_tx/BTC/",
+			data: {"tx_hex":$("#rawTransaction").val()},
+			dataType: "json",
+			error: function(data) {
+				var obj = $.parseJSON(data.responseText);
+				var r = ' ';
+				r += (obj.data.tx_hex) ? obj.data.tx_hex : '';
+				r = (r!='') ? r : ' Failed to broadcast'; // build response 
+				$("#rawTransactionStatus").addClass('alert-danger').removeClass('alert-success').removeClass("hidden").html(r).prepend('<span class="glyphicon glyphicon-exclamation-sign"></span>');
+			},
+                        success: function(data) {
+				var obj = $.parseJSON(data.responseText);
+				if(obj.status && obj.txid){
+					$("#rawTransactionStatus").addClass('alert-success').removeClass('alert-danger').removeClass("hidden").html(' Txid: '+obj.txid);
+				} else {
+					$("#rawTransactionStatus").addClass('alert-danger').removeClass('alert-success').removeClass("hidden").html(' Unexpected error, please try again').prepend('<span class="glyphicon glyphicon-exclamation-sign"></span>');
+				}				
+			},
+			complete: function(data, status) {
+				$("#rawTransactionStatus").fadeOut().fadeIn();
+				$(thisbtn).val('Submit').attr('disabled',false);				
+			}
+		});
+	}
+
 	// broadcast transaction via blockr.io for litecoin
 	function rawSubmitBlockrio_litecoin(thisbtn){ 
 		$(thisbtn).val('Please wait, loading...').attr('disabled',true);
@@ -1417,6 +1447,10 @@ $(document).ready(function() {
 			$("#rawSubmitBtn").click(function(){
 				rawSubmitBlockrio_BitcoinMainnet(this);
 			});
+		} else if(host=="chain.so_bitcoinmainnet"){
+			$("#rawSubmitBtn").click(function(){
+				rawSubmitChainso_BitcoinMainnet(this);
+			});
 		} else {
 			$("#rawSubmitBtn").click(function(){
 				rawSubmitDefault(this); // revert to default
diff --git a/sha1sum b/sha1sum
index 6c32853..d14fb5c 100644
--- a/sha1sum
+++ b/sha1sum
@@ -1,9 +1,9 @@
----- Version 1.2 2016.02.25 ----
+---- Version 1.2 2016.03.15 ----
 77e4519962e2f6a9fc93342137dbb31c33b76b04  ./js/aes.js
 3a09a8fc0cfe828b57fc798d668234d0490ee1a6  ./js/bootstrap-datetimepicker.min.js
 253711c6d825de55a8360552573be950da180614  ./js/bootstrap.min.js
 ca3f654f247fef67de2cf6e01c3aa80db1812e5d  ./js/coin.js
-16a0cf35c7dd8cdd3ec9fb06b7b120f674fe3b88  ./js/coinbin.js
+664ee79f35a73b754725c52c14257cc781a9ef50  ./js/coinbin.js
 988565bc2cb402d63ed5c5fd7ff47c4278efc2c5  ./js/collapse.js
 9ba5ede3d7f9d4c8fd623395f196adfdcf7e970f  ./js/crypto-min.js
 f7c09f2f5a721371e7d478050119f7e2d58e3ef9  ./js/crypto-sha256-hmac.js
@@ -18,6 +18,7 @@ ad038e1f39646b68ae666324ed4c2882a8c42474  ./js/qrcode.js
 114089ef2a3feb6d4db4f9cabcb186d7750d5884  ./js/sha512.js
 506c40035e0d22560478629434d0fea27643b77a  ./js/transition.js
 5f570018ed044eafd464f7e0ab1783b966224055  ./LICENCE
+255c58c17e63eb54adb3cd02b5c06224c67fc364  ./css/bootstrap-datetimepicker.min.css
 ed29315e0ffb3f14382431f2724235bf67f44eb3  ./css/bootstrap.min.css
 fc6b4268fbd57ad95d2b41a1d4d6866f222fbdb2  ./css/bootstrap-theme.min.css
 8297b8f4d686ec6c65981077514975e06ce41812  ./css/style.css
@@ -29,4 +30,4 @@ de51a8494180a6db074af2dee2383f0a363c5b08  ./fonts/glyphicons-halflings-regular.s
 278e49a86e634da6f2a02f3b47dd9d2a8f26210f  ./fonts/glyphicons-halflings-regular.woff
 44bc1850f570972267b169ae18f1cb06b611ffa2  ./fonts/glyphicons-halflings-regular.ttf
 48ff08f459ff55ae54e594b4ae307d1d8e6f74b3  ./README.md
-1c48c81d71751f6bf99c9c889645f747e2466ce7  ./index.html
+000c945b6fae0e7450a9bad857094374eb4e2db2  ./index.html