I have been following this thread, so here are some thoughts I have in relation to technology behind the XDN.

First of all, the XDN the code base for Darknote is completely different from BTC, based on CryptoNote. It took only the best from the CN and improved some important aspects of its nature.

The XDN works on the CryptoNight, a PoW algorithm developed with the aim of equalizing one CPU to one Vote in the network by relying on random access to slow memory. Every new block is dependent on all previously mined blocks, unlike Scrypt or any other algorithm proclaimed to be ASIC-resistant. This way, anyone trying to stockpile memory to increase their mining speed will have to provide for an exponentially-increasing demand.
GPUs have no advantage over CPUs and ASICs are outright impossible to be designed here.