Dero Stargate stands for solo mining to build up distributed network of nodes. To get this done Stargate introduced miniblocks, each one contains a 1/10 of block reward, so even small miners can get one.
Dero.miner.rocks provides a getwork port from a daemon for solo mining.
Rewards in Dero Stargate distributed in a way: 9 miniblock rewards goes to miners, the last one reward (amount is same as mini) goes to integrator (node owner) address.