Quick and Dirty CCminer (nvidia) source here:

https://github.com/ocminer/ccminer-twlv

I've hacked the x15 algo for use with twelve, so you have to run it with:

./ccminer -a x15 -o stratum+tcp://twlv.suprnova.cc:5367 -u username.workername -p workerpass

No, the algo used for twelvecoin is NOT x15, I simply hacked the miner to work with the new algo but did not rename it in the miner, you are NOT mining with x15, you're mining with twlv.

You cannot mine twelve with an x15 miner, you MUST use the one from my github.