Update work calculation, and immediate hard fork to subvert attack

configure.ac

@@ -2,7 +2,7 @@ dnl require autoconf 2.60 (AS_ECHO/AS_ECHO_N)
 AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 3)
 define(_CLIENT_VERSION_MINOR, 11)
-define(_CLIENT_VERSION_REVISION, 2)
+define(_CLIENT_VERSION_REVISION, 3)
 define(_CLIENT_VERSION_BUILD, 0)
 define(_CLIENT_VERSION_IS_RELEASE, true)
 define(_COPYRIGHT_YEAR, 2017)

src/amount.h

@@ -34,7 +34,7 @@ class CFeeRate
     CFeeRate(const CFeeRate& other) { nSatoshisPerK = other.nSatoshisPerK; }
 
     CAmount GetFee(size_t size) const; // unit returned is satoshis
-    CAmount GetFeePerK() const { return GetFee(50000); } // satoshis-per-1000-bytes
+    CAmount GetFeePerK() const { return GetFee(1000); } // satoshis-per-1000-bytes
 
     friend bool operator<(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK < b.nSatoshisPerK; }
     friend bool operator>(const CFeeRate& a, const CFeeRate& b) { return a.nSatoshisPerK > b.nSatoshisPerK; }

src/chainparams.cpp

@@ -60,10 +60,10 @@ class CMainParams : public CChainParams {
         //consensus.nBlockAlgoNormalisedWorkStart = 740000; // block where algo combined weight starts
         //consensus.nBlockAlgoNormalisedWorkDecayStart1 = 866000; // block where weight decay starts
         //consensus.nBlockAlgoNormalisedWorkDecayStart2 = 932000; // block where weight decay starts
-        //consensus.nGeoAvgWork_Start = 4000000; // TODO
+        consensus.nGeoAvgWork_Start = 2387838;
         consensus.nDGW3StartBlock = 1635000; 
         consensus.nMultiAlgoFork = 1930000; // Block where multi-algo difficulty adjustment and 45 second blocktime starts
-        consensus.nCoinbaseMaturityV2Start = 2422000;
+        consensus.nCoinbaseMaturityV2Start = 2387838;
 
         /** 
          * The message start string is designed to be unlikely to occur in normal data.
@@ -149,11 +149,12 @@ class CMainParams : public CChainParams {
             (  1924401, uint256S("0x2267dd4753f9e8fa088cdc4d257355b0a118ccd43a2f366c68de1aa260c4ba22"))
             (  1934707, uint256S("0xe4527742cb236f24b355156213775e44da0e728ea453fae712fa672b18ce5f84"))
             (  2050260, uint256S("0xbc55838e026131fab334f1c87de9fea3218d076f4de03dc19f94d4f12da7d6c1"))
-            (  2365716, uint256S("0x947827b4599512a675fc3789ac8778b3187277705ffda7b6e3cf6adaa31dac10")),
+            (  2365716, uint256S("0x947827b4599512a675fc3789ac8778b3187277705ffda7b6e3cf6adaa31dac10"))
+            (  2387838, uint256S("0x00000000000000254214c9f9fbdd39c07072b43df52f35a910509f4c5406c272")),
         1491891115, // * UNIX timestamp of last checkpoint block
-        2604836,    // * total number of transactions between genesis and last checkpoint
+        2629957,    // * total number of transactions between genesis and last checkpoint
                     //   (the tx=... number in the SetBestChain debug.log lines)
-        2000        // * estimated number of transactions per day after checkpoint
+        3000        // * estimated number of transactions per day after checkpoint
         };
     }
 };

src/clientversion.h

@@ -16,7 +16,7 @@
 //! These need to be macros, as clientversion.cpp's and bitcoin*-res.rc's voodoo requires it
 #define CLIENT_VERSION_MAJOR 3
 #define CLIENT_VERSION_MINOR 11
-#define CLIENT_VERSION_REVISION 2
+#define CLIENT_VERSION_REVISION 3
 #define CLIENT_VERSION_BUILD 0
 
 //! Set to true for release, false for prerelease or test build

src/consensus/params.h

@@ -38,7 +38,7 @@ struct Params {
     //int64_t nBlockAlgoNormalisedWorkStart;
     //int64_t nBlockAlgoNormalisedWorkDecayStart1;
     //int64_t nBlockAlgoNormalisedWorkDecayStart2;
-    //int64_t nGeoAvgWork_Start;
+    int64_t nGeoAvgWork_Start;
     int64_t nMultiAlgoFork;
     int64_t nDGW3StartBlock;
     int64_t nCoinbaseMaturityV2Start;

src/pow.cpp

@@ -610,7 +610,7 @@ arith_uint256 GetPrevWorkForAlgo(const CBlockIndex& block, int algo)
     return arith_uint256(0);
 } */
 
-/*arith_uint256 GetPrevWorkForAlgoWithDecay3(const CBlockIndex& block, int algo)
+arith_uint256 GetPrevWorkForAlgoWithDecay3(const CBlockIndex& block, int algo)
 {
     int nDistance = 0;
     arith_uint256 nWork;
@@ -632,9 +632,9 @@ arith_uint256 GetPrevWorkForAlgo(const CBlockIndex& block, int algo)
         nDistance++;
     }
     return arith_uint256(0);
-}*/
+}
 
-/*arith_uint256 GetGeometricMeanPrevWork(const CBlockIndex& block) // TODO Argentum
+arith_uint256 GetGeometricMeanPrevWork(const CBlockIndex& block)
 {
     //arith_uint256 bnRes;
     arith_uint256 nBlockWork = GetBlockProofBase(block);
@@ -654,12 +654,9 @@ arith_uint256 GetPrevWorkForAlgo(const CBlockIndex& block, int algo)
     // Compute the geometric mean
     CBigNum bnRes = bnBlockWork.nthRoot(NUM_ALGOS);
 
-    // Scale to roughly match the old work calculation
-    bnRes <<= 7;
-
     //return bnRes;
     return UintToArith256(bnRes.getuint256());
-}*/
+}
 
 arith_uint256 GetBlockProof(const CBlockIndex& block)
 {
@@ -669,11 +666,11 @@ arith_uint256 GetBlockProof(const CBlockIndex& block)
     int nHeight = block.nHeight;
     int nAlgo = block.GetAlgo();
 
-    /*if (nHeight > chainparams.GetConsensus().nGeoAvgWork_Start) // TODO Argentum
+    if (nHeight >= chainparams.GetConsensus().nGeoAvgWork_Start)
     {
         bnTarget = GetGeometricMeanPrevWork(block);
-    }*/
-    if (nHeight >= chainparams.GetConsensus().nMultiAlgoFork)
+    }
+    else if (nHeight >= chainparams.GetConsensus().nMultiAlgoFork)
     {
         arith_uint256 nBlockWork = GetBlockProofBase(block);
         for (int algo = 0; algo < NUM_ALGOS; algo++)

src/version.h

@@ -9,13 +9,13 @@
  * network protocol versioning
  */
 
-static const int PROTOCOL_VERSION = 1060000;
+static const int PROTOCOL_VERSION = 1070000;
 
 //! initial proto version, to be increased after version/verack negotiation
 static const int INIT_PROTO_VERSION = 209;
 
 //! disconnect from peers older than this proto version
-static const int MIN_PEER_PROTO_VERSION = 1050000;
+static const int MIN_PEER_PROTO_VERSION = 1070000;
 
 // disconnect from peers older than this client sub version
 static const std::string MIN_PEER_CLIENT_VERSION = "2.4.1";