Address GetDepthInMainChain TODO in PosMinting.cs (#1417)
Address GetDepthInMainChain TODO in PosMinting.cs (#1417)

* Address GetDepthInMainChain TODO in PosMinting.cs

* Changes based on feedback

* Changes based on feedback

bokobza/StratisBitcoinFullNode,quantumagi/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,Aprogiena/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,fassadlr/StratisBitcoinFullNode,Aprogiena/StratisBitcoinFullNode,Neurosploit/StratisBitcoinFullNode,Neurosploit/StratisBitcoinFullNode,fassadlr/StratisBitcoinFullNode,mikedennis/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,bokobza/StratisBitcoinFullNode,stratisproject/StratisBitcoinFullNode,stratisproject/StratisBitcoinFullNode,Neurosploit/StratisBitcoinFullNode,Aprogiena/StratisBitcoinFullNode,quantumagi/StratisBitcoinFullNode