diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 54f23b682c0f4..1d506d4e53696 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -247,7 +247,7 @@ class CMainParams : public CChainParams {
         nPoolMaxTransactions = 3;
         nFulfilledRequestExpireTime = 60*60; // fulfilled requests expire in 1 hour
 
-        strSporkAddress = "DJ7YjNsc8TYHetDbwsxeNZTzyQzQPKCaxW"; // TODO is Dummy only  https://github.com/dashpay/dash/commit/611879aa6d973ab995088647d701a4747d0716d3#diff-64cbe1ad5465e13bc59ee8bb6f3de2e7
+        strSporkAddress = "DN8GxA2zrozDSDQYedkTznf4jFC4Ujgddr"; // TODO  https://github.com/dashpay/dash/commit/611879aa6d973ab995088647d701a4747d0716d3#diff-64cbe1ad5465e13bc59ee8bb6f3de2e7
 
         checkpointData = (CCheckpointData) {
             boost::assign::map_list_of
diff --git a/src/clientversion.h b/src/clientversion.h
index 617cc76a09209..54a0cf72f1840 100644
--- a/src/clientversion.h
+++ b/src/clientversion.h
@@ -18,8 +18,8 @@
 //! These need to be macros, as clientversion.cpp's and dms*-res.rc's voodoo requires it
 #define CLIENT_VERSION_MAJOR 0
 #define CLIENT_VERSION_MINOR 12
-#define CLIENT_VERSION_REVISION 3
-#define CLIENT_VERSION_BUILD 2
+#define CLIENT_VERSION_REVISION 9
+#define CLIENT_VERSION_BUILD 0
 
 //! Set to true for release, false for prerelease or test build
 #define CLIENT_VERSION_IS_RELEASE true
diff --git a/src/validation.cpp b/src/validation.cpp
index b0639434538b8..5517c1618f23a 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1292,13 +1292,17 @@ CAmount GetBlockSubsidy(int nPrevBits, int nPrevHeight, const Consensus::Params&
     double dDiff;
     CAmount nSubsidyBase;
 
+	/*
     if (nPrevHeight <= 4500 && Params().NetworkIDString() == CBaseChainParams::MAIN) {
-        /* a bug which caused diff to not be correctly calculated */
+        // Dash: a bug which caused diff to not be correctly calculated 
         dDiff = (double)0x0000ffff / (double)(nPrevBits & 0x00ffffff);
     } else {
         dDiff = ConvertBitsToDouble(nPrevBits);
     }
+	*/
+	dDiff = ConvertBitsToDouble(nPrevBits);
 
+    /* Dash:
     if (nPrevHeight < 5465) {
         // Early ages...
         // 1111/((x+1)^2)
@@ -1318,6 +1322,12 @@ CAmount GetBlockSubsidy(int nPrevBits, int nPrevHeight, const Consensus::Params&
         if(nSubsidyBase > 25) nSubsidyBase = 25;
         else if(nSubsidyBase < 5) nSubsidyBase = 5;
     }
+	*/
+	// DMS: CPU mining era, reward 25 - 50 DMS
+    // 11111/(((x+51)/6)^2)
+    nSubsidyBase = (11111.0 / (pow((dDiff+51.0)/6.0,2.0)));
+    if(nSubsidyBase > 50) nSubsidyBase = 50;
+    else if(nSubsidyBase < 25) nSubsidyBase = 25;	
 
     // LogPrintf("height %u diff %4.2f reward %d\n", nPrevHeight, dDiff, nSubsidyBase);
     CAmount nSubsidy = nSubsidyBase * COIN;