Any DT member online that could confirm this please? My bitcoin core takes too long to load with 20GB of blocks on it.
You can check here :
http://coinig.com/I tried that and it gives me an error ~sinp~
Coinig is pretty broken (as f*), especially when it comes to messages with linebreaks etc.
You should use other verification tools (core, electrum,...).
If it has to be a website/online tool, go with
a copy of brainwallet.