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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Bitcoin Payment Calculator</title>
<script language="javascript" type="text/javascript" src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
<script language="javascript" type="text/javascript">
$(function() {
var websocket = new WebSocket("ws://api.blockchain.info:8335/inv");
var exchange = 0;
var total = 0;
var received = 0;
websocket.onopen = function() {
websocket.send('{"op":"addr_sub", "addr":"1PcXspQbZWxUkS9bHcbgMUsb8HsUzP5noT"}');
}
websocket.onmessage = function(e) {
var results = eval('(' + e.data + ')');
$.each(results.x.out, function(i, v) {
if (v.addr == '1PcXspQbZWxUkS9bHcbgMUsb8HsUzP5noT') {
received += v.value / 100000000;
}
});
$.each(results.x.inputs, function(i, v) {
if (v.prev_out.addr == '1PcXspQbZWxUkS9bHcbgMUsb8HsUzP5noT') {
input -= v.prev_out.value / 100000000;
}
});
$('#status').html('Received: ' + received.toString());
if (total <= received) {
$('#status').css('color', 'green');
}
}
$.getJSON('ticker', function (data) {
exchange = data.return.last.value;
$('#exchange').html(exchange);
updateTotal();
});
$('#owing').keyup(updateTotal);
$('#owing').focus();
function updateTotal() {
var owing = parseFloat($('#owing').val());
total = owing / exchange;
total = Math.ceil(total * 10000) / 10000;
if (!$.isNumeric(total)) total = '';
$('#total').html(total.toString());
}
});
</script>
</head>
<style>
body, input { font-family: 'Arial'; font-size: 20px; }
#total { font-size: 32px; }
#status { color: red }
</style>
<body>
<div>
$<input type="text" id="owing" value="0" size="4" /> CAD @
<span id="exchange"></span>
BTC/CAD
</div>
<br />
<div>
<span>Please send</span>
<strong id="total">0.0</strong>
bitcoins to:
<br /><br />
1PcXspQbZWxUkS9bHcbgMUsb8HsUzP5noT
<br />
<img id="qr" src="https://chart.googleapis.com/chart?cht=qr&chl=bitcoin:1PcXspQbZWxUkS9bHcbgMUsb8HsUzP5noT&chs=177x177&chld=H" width="300" height="300" />
<br />
<span id="status">Waiting for Payment</span>
</div>
</body>
</html>
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