https://crypto-staking.com has just listed PivX for staking. Just deposit your PivX coins and earn 4.8% ROI on your coin deposit. 40+ different coins for staking and fully automated re-investing so your rewards do increase without doing anything.
With the 4.0 PIVX wallet you can quickly and easily push a wallet for cold stacking on a server.
I've set up a testnet wallet on an underutilized server. PIVX Cold Staking HOWTO
I am excited and looking forward to the finished 4.0. Thanks to the developers.
I hope there will someday be a debian repo with .deb's for a masternode. ;-)