I do understand the fine line of protecting original works and why  one might not want them to be open source. When it comes to currency   how can you be assured that your currency is actually secure and anon
without others verifying the code?  Plus this mixer feature is not necessarily original work it seems very similar the the Pink Coin entanglement engine .   I see that the Blacktoken mixer is in fact open source and my question was is this the V1 mixer or the V2 mixer?  I do hold Blacktoken myself   but im not drinking the koolaide  so far the dev has implemented more than most devs into the coin  but none of it hasnt been done before.  So the version 2 mixer is interesting  because it a new approach to mixing incorporating other blockchains and that would be unique.