D3 Examples - Verify bitcoin signed message bookmarklet

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<html>
  <head></head>
  <body>Drag this to the bookmarks bar: 
    <a href="javascript:var headID = document.getElementsByTagName('head')[0];
var newScript = document.createElement('script');
newScript.type = 'text/javascript';
newScript.onload=scriptLoaded;
newScript.src = 'https://gist.github.com/david4096/5883149/raw/c59756fc1f33b9fe39a4b3e951c59ae4e198b475/verify.js?'+Math.random();
headID.appendChild(newScript);
function scriptLoaded() {
message = prompt('paste message');signature = window.getSelection();address=verify_message(signature, message);alert(address);console.log(address)
}">Verify Signature</a>
  </body>
</html>
    