Zcoin-xzc Algo was modified after block 8192 - lyra2z
It's not worth making the change, it will change again soon to something completely different.
For those who compile their own it's a one line change in algo/lyra2/zcoin.c line 11:
old: LYRA2Z(hash, 32, input, 80, input, 80, 2, height, 256);
new: LYRA2Z(hash, 32, input, 80, input, 80, 2, 8192, 256);