Now we can start developing blockchain-based web applications. Note that this feature doesn't touch sources of Datacoin daemon or qt-wallet: if you are not interested in this it you can still use Datacoins and without understanding this post. Blockchain-based web applications require a http-server that redirects HTTP requests from browser to daemon. This is implemented now with Perl (dtc_http_server.pl). Yes, I know I would have to do it using C++. I'll rewrite it later.