Sapling support for z_shieldcoinbase and more

src/pow.cpp

@@ -38,6 +38,20 @@ unsigned int GetNextWorkRequired(const CBlockIndex* pindexLast, const CBlockHead
     if (pindexLast == NULL )
         return nProofOfWorkLimit;
 
+    //{
+        // Comparing to pindexLast->nHeight with >= because this function
+        // returns the work required for the block after pindexLast.
+        //if (params.nPowAllowMinDifficultyBlocksAfterHeight != boost::none &&
+        //    pindexLast->nHeight >= params.nPowAllowMinDifficultyBlocksAfterHeight.get())
+        //{
+            // Special difficulty rule for testnet:
+            // If the new block's timestamp is more than 6 * 2.5 minutes
+            // then allow mining of a min-difficulty block.
+        //    if (pblock && pblock->GetBlockTime() > pindexLast->GetBlockTime() + params.nPowTargetSpacing * 6)
+        //        return nProofOfWorkLimit;
+        //}
+    //}
+
     // Find the first block in the averaging interval
     const CBlockIndex* pindexFirst = pindexLast;
     arith_uint256 bnTot {0};