Single node Round Robin mining

Question

Lets say a node #1 starts a chain, "Testchain"

It creates test addresses and gives mine permissions to 10 different addresses

Another node #2, now joins this network, and only one of its address is granted mine address

In this case, wont node #1 dominate mining on the chain and have the power to act maliciously?

Answer 1

Yes, if multiple addresses with mine permissions are owned by a node, then that node has the same power as multiple miners. Make sure you don't do this!