text: // Copyright (c) 2010 Satoshi Nakamoto
  // Copyright (c) 2009-2014 The Bitcoin developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "chainparams.h"
  
  #include "random.h"
  #include "util.h"
  #include "utilstrencodings.h"
  
  #include <assert.h>
  
  #include <boost/assign/list_of.hpp>
  
  using namespace std;
  using namespace boost::assign;
  
  struct SeedSpec6 {
      uint8_t addr[16];
      uint16_t port;
  };
  
  #include "chainparamsseeds.h"
  
  /**
   * Main network
   */
  
  //! Convert the pnSeeds6 array into usable address objects.
  static void convertSeed6(std::vector<CAddress> &vSeedsOut, const SeedSpec6 *data, unsigned int count)
  {
      // It'll only connect to one or two seed nodes because once it connects,
      // it'll get a pile of addresses with newer timestamps.
      // Seed nodes are given a random 'last seen time' of between one and two
      // weeks ago.
      const int64_t nOneWeek = 7*24*60*60;
      for (unsigned int i = 0; i < count; i++)
      {
          struct in6_addr ip;
          memcpy(&ip, data[i].addr, sizeof(ip));
          CAddress addr(CService(ip, data[i].port));
          addr.nTime = GetTime() - GetRand(nOneWeek) - nOneWeek;
          vSeedsOut.push_back(addr);
      }
  }
  
  /**
   * What makes a good checkpoint block?
   * + Is surrounded by blocks with reasonable timestamps
   *   (no blocks before with a timestamp after, none after with
   *    timestamp before)
   * + Contains no strange transactions
   */
  static Checkpoints::MapCheckpoints mapCheckpoints =
          boost::assign::map_list_of
          (  0, uint256("0x642e8a7b6549d54a5f13d78ecfa8f024740fbc145f0ed0fd211d65e02afff70c"))
          
          ;
  static const Checkpoints::CCheckpointData data = {
          &mapCheckpoints,
          1422681363, // * UNIX timestamp of last checkpoint block
          5502192,   // * total number of transactions between genesis and last checkpoint
                      //   (the tx=... number in the SetBestChain debug.log lines)
          5500.0     // * estimated number of transactions per day after checkpoint
      };
  
  static Checkpoints::MapCheckpoints mapCheckpointsTestnet =
          boost::assign::map_list_of
          (  0, uint256("0x642e8a7b6549d54a5f13d78ecfa8f024740fbc145f0ed0fd211d65e02afff70c"))
          ;
  static const Checkpoints::CCheckpointData dataTestnet = {
          &mapCheckpointsTestnet,
          1431370574, // * UNIX timestamp of last checkpoint block
          0,    // * total number of transactions between genesis and last checkpoint
                      //   (the tx=... number in the SetBestChain debug.log lines)
          7000.0     // * estimated number of transactions per day after checkpoint
      };
  
  static Checkpoints::MapCheckpoints mapCheckpointsRegtest =
          boost::assign::map_list_of
          (   0, uint256("0x642e8a7b6549d54a5f13d78ecfa8f024740fbc145f0ed0fd211d65e02afff70c"))
          ;
  static const Checkpoints::CCheckpointData dataRegtest = {
          &mapCheckpointsRegtest,
          1431370574,
          0,
          0
      };
  
  class CMainParams : public CChainParams {
  public:
      CMainParams() {
          networkID = CBaseChainParams::MAIN;
          strNetworkID = "main";
          /** 
           * The message start string is designed to be unlikely to occur in normal data.
           * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
           * a large 4-byte int at any alignment.
           */
          pchMessageStart[0] = 0xfb;
          pchMessageStart[1] = 0xc0;
          pchMessageStart[2] = 0xb6;
          pchMessageStart[3] = 0xdb;
          vAlertPubKey = ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9");
          nDefaultPort = 9333;
          bnProofOfWorkLimit = ~uint256(0) >> 20;
          nSubsidyHalvingInterval = 840000;
          nEnforceBlockUpgradeMajority = 750;
          nRejectBlockOutdatedMajority = 950;
          nToCheckBlockUpgradeMajority = 1000;
          nMinerThreads = 0;
          nTargetTimespan = 3.5 * 24 * 60 * 60; // 3.5 days
          nTargetSpacing = 2.5 * 60; // 2.5 minutes
  
          /**
           * Build the genesis block. Note that the output of the genesis coinbase cannot
           * be spent as it did not originally exist in the database.
           * 
           * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
           *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
           *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
           *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
           *   vMerkleTree: 4a5e1e
           */
          const char* pszTimestamp = "01-05-2015 70 years of Russian win in WOW Amuse start";
          CMutableTransaction txNew;
          txNew.vin.resize(1);
          txNew.vout.resize(1);
          txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
          txNew.vout[0].nValue = 50 * COIN;
          txNew.vout[0].scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
          genesis.vtx.push_back(txNew);
          genesis.hashPrevBlock = 0;
          genesis.hashMerkleRoot = genesis.BuildMerkleTree();
          genesis.nVersion = 1;
          genesis.nTime    = 1431370574;
          genesis.nBits    = 0x1e0ffff0;
          genesis.nNonce   = 688378;
  
          hashGenesisBlock = genesis.GetHash();
          assert(hashGenesisBlock == uint256("0x642e8a7b6549d54a5f13d78ecfa8f024740fbc145f0ed0fd211d65e02afff70c"));
          assert(genesis.hashMerkleRoot == uint256("0x1ce12f86784b1fb5d1f450896e28b63070a662fa5b229b657904341b69d0ca22"));
  
          vSeeds.push_back(CDNSSeedData("seed.moneta.io", "seed.moneta.io"));
         /** vSeeds.push_back(CDNSSeedData("litecoinpool.org", "dnsseed.litecoinpool.org"));
          vSeeds.push_back(CDNSSeedData("xurious.com", "dnsseed.ltc.xurious.com"));
          vSeeds.push_back(CDNSSeedData("koin-project.com", "dnsseed.koin-project.com"));
          vSeeds.push_back(CDNSSeedData("weminemnc.com", "dnsseed.weminemnc.com"));
          **/
  
          base58Prefixes[PUBKEY_ADDRESS] = list_of(20);
          base58Prefixes[SCRIPT_ADDRESS] = list_of(5);
          base58Prefixes[SECRET_KEY] =     list_of(176);
          base58Prefixes[EXT_PUBLIC_KEY] = list_of(0x04)(0x88)(0xB2)(0x1E);
          base58Prefixes[EXT_SECRET_KEY] = list_of(0x04)(0x88)(0xAD)(0xE4);
  
          convertSeed6(vFixedSeeds, pnSeed6_main, ARRAYLEN(pnSeed6_main));
  
          fRequireRPCPassword = true;
          fMiningRequiresPeers = true;
          fAllowMinDifficultyBlocks = false;
          fDefaultConsistencyChecks = false;
          fRequireStandard = true;
          fMineBlocksOnDemand = false;
          fSkipProofOfWorkCheck = false;
          fTestnetToBeDeprecatedFieldRPC = false;
  
          // Litecoin: Mainnet v2 enforced as of block 710k
          nEnforceV2AfterHeight = 710000;
      }
  
      const Checkpoints::CCheckpointData& Checkpoints() const 
      {
          return data;
      }
  };
  static CMainParams mainParams;
  
  /**
   * Testnet (v3)
   */
  class CTestNetParams : public CMainParams {
  public:
      CTestNetParams() {
          networkID = CBaseChainParams::TESTNET;
          strNetworkID = "test";
          pchMessageStart[0] = 0xfc;
          pchMessageStart[1] = 0xc1;
          pchMessageStart[2] = 0xb7;
          pchMessageStart[3] = 0xdc;
          vAlertPubKey = ParseHex("0449623fc74489a947c4b15d579115591add020e53b3490bf47297dfa3762250625f8ecc2fb4fc59f69bdce8f7080f3167808276ed2c79d297054367566038aa82");
          nDefaultPort = 19333;
          nEnforceBlockUpgradeMajority = 51;
          nRejectBlockOutdatedMajority = 75;
          nToCheckBlockUpgradeMajority = 100;
          nMinerThreads = 0;
          nTargetTimespan = 3.5 * 24 * 60 * 60; // 3.5 days
          nTargetSpacing = 2.5 * 60; // 2.5 minutes
  
          //! Modify the testnet genesis block so the timestamp is valid for a later start.
          genesis.nTime = 1317798646;
          genesis.nNonce = 385270584;
          hashGenesisBlock = genesis.GetHash();
          assert(hashGenesisBlock == uint256("0xf5ae71e26c74beacc88382716aced69cddf3dffff24f384e1808905e0188f68f"));
  
          vFixedSeeds.clear();
          vSeeds.clear();
          vSeeds.push_back(CDNSSeedData("litecointools.com", "testnet-seed.litecointools.com"));
          vSeeds.push_back(CDNSSeedData("xurious.com", "testnet-seed.ltc.xurious.com"));
          vSeeds.push_back(CDNSSeedData("wemine-testnet.com", "dnsseed.wemine-testnet.com"));
  
          base58Prefixes[PUBKEY_ADDRESS] = list_of(111);
          base58Prefixes[SCRIPT_ADDRESS] = list_of(196);
          base58Prefixes[SECRET_KEY]     = list_of(239);
          base58Prefixes[EXT_PUBLIC_KEY] = list_of(0x04)(0x35)(0x87)(0xCF);
          base58Prefixes[EXT_SECRET_KEY] = list_of(0x04)(0x35)(0x83)(0x94);
  
          convertSeed6(vFixedSeeds, pnSeed6_test, ARRAYLEN(pnSeed6_test));
  
          fRequireRPCPassword = true;
          fMiningRequiresPeers = true;
          fAllowMinDifficultyBlocks = true;
          fDefaultConsistencyChecks = false;
          fRequireStandard = false;
          fMineBlocksOnDemand = false;
          fTestnetToBeDeprecatedFieldRPC = true;
  
          // Litecoin: Testnet v2 enforced as of block 400k
          nEnforceV2AfterHeight = 400000;
      }
      const Checkpoints::CCheckpointData& Checkpoints() const 
      {
          return dataTestnet;
      }
  };
  static CTestNetParams testNetParams;
  
  /**
   * Regression test
   */
  class CRegTestParams : public CTestNetParams {
  public:
      CRegTestParams() {
          networkID = CBaseChainParams::REGTEST;
          strNetworkID = "regtest";
          pchMessageStart[0] = 0xfa;
          pchMessageStart[1] = 0xbf;
          pchMessageStart[2] = 0xb5;
          pchMessageStart[3] = 0xda;
          nSubsidyHalvingInterval = 150;
          nEnforceBlockUpgradeMajority = 750;
          nRejectBlockOutdatedMajority = 950;
          nToCheckBlockUpgradeMajority = 1000;
          nMinerThreads = 1;
          nTargetTimespan = 3.5 * 24 * 60 * 60; // 3.5 days
          nTargetSpacing = 2.5 * 60; // 2.5 minutes
          bnProofOfWorkLimit = ~uint256(0) >> 1;
          genesis.nTime = 1296688602;
          genesis.nBits = 0x207fffff;
          genesis.nNonce = 0;
          hashGenesisBlock = genesis.GetHash();
          nDefaultPort = 19444;
          assert(hashGenesisBlock == uint256("0x530827f38f93b43ed12af0b3ad25a288dc02ed74d6d7857862df51fc56c416f9"));
  
          vFixedSeeds.clear(); //! Regtest mode doesn't have any fixed seeds.
          vSeeds.clear();  //! Regtest mode doesn't have any DNS seeds.
  
          fRequireRPCPassword = false;
          fMiningRequiresPeers = false;
          fAllowMinDifficultyBlocks = true;
          fDefaultConsistencyChecks = true;
          fRequireStandard = false;
          fMineBlocksOnDemand = true;
          fTestnetToBeDeprecatedFieldRPC = false;
  
          // Litecoin: v2 enforced using Bitcoin's supermajority rule
          nEnforceV2AfterHeight = -1;
      }
      const Checkpoints::CCheckpointData& Checkpoints() const 
      {
          return dataRegtest;
      }
  };
  static CRegTestParams regTestParams;
  
  /**
   * Unit test
   */
  class CUnitTestParams : public CMainParams, public CModifiableParams {
  public:
      CUnitTestParams() {
          networkID = CBaseChainParams::UNITTEST;
          strNetworkID = "unittest";
          nDefaultPort = 18445;
          vFixedSeeds.clear(); //! Unit test mode doesn't have any fixed seeds.
          vSeeds.clear();  //! Unit test mode doesn't have any DNS seeds.
  
          fRequireRPCPassword = false;
          fMiningRequiresPeers = false;
          fDefaultConsistencyChecks = true;
          fAllowMinDifficultyBlocks = false;
          fMineBlocksOnDemand = true;
  
          // Litecoin: v2 enforced using Bitcoin's supermajority rule
          nEnforceV2AfterHeight = -1;
      }
  
      const Checkpoints::CCheckpointData& Checkpoints() const 
      {
          // UnitTest share the same checkpoints as MAIN
          return data;
      }
  
      //! Published setters to allow changing values in unit test cases
      virtual void setSubsidyHalvingInterval(int anSubsidyHalvingInterval)  { nSubsidyHalvingInterval=anSubsidyHalvingInterval; }
      virtual void setEnforceBlockUpgradeMajority(int anEnforceBlockUpgradeMajority)  { nEnforceBlockUpgradeMajority=anEnforceBlockUpgradeMajority; }
      virtual void setRejectBlockOutdatedMajority(int anRejectBlockOutdatedMajority)  { nRejectBlockOutdatedMajority=anRejectBlockOutdatedMajority; }
      virtual void setToCheckBlockUpgradeMajority(int anToCheckBlockUpgradeMajority)  { nToCheckBlockUpgradeMajority=anToCheckBlockUpgradeMajority; }
      virtual void setDefaultConsistencyChecks(bool afDefaultConsistencyChecks)  { fDefaultConsistencyChecks=afDefaultConsistencyChecks; }
      virtual void setAllowMinDifficultyBlocks(bool afAllowMinDifficultyBlocks) {  fAllowMinDifficultyBlocks=afAllowMinDifficultyBlocks; }
      virtual void setSkipProofOfWorkCheck(bool afSkipProofOfWorkCheck) { fSkipProofOfWorkCheck = afSkipProofOfWorkCheck; }
  };
  static CUnitTestParams unitTestParams;
  
  
  static CChainParams *pCurrentParams = 0;
  
  CModifiableParams *ModifiableParams()
  {
     assert(pCurrentParams);
     assert(pCurrentParams==&unitTestParams);
     return (CModifiableParams*)&unitTestParams;
  }
  
  const CChainParams &Params() {
      assert(pCurrentParams);
      return *pCurrentParams;
  }
  
  CChainParams &Params(CBaseChainParams::Network network) {
      switch (network) {
          case CBaseChainParams::MAIN:
              return mainParams;
          case CBaseChainParams::TESTNET:
              return testNetParams;
          case CBaseChainParams::REGTEST:
              return regTestParams;
          case CBaseChainParams::UNITTEST:
              return unitTestParams;
          default:
              assert(false && "Unimplemented network");
              return mainParams;
      }
  }
  
  void SelectParams(CBaseChainParams::Network network) {
      SelectBaseParams(network);
      pCurrentParams = &Params(network);
  }
  
  bool SelectParamsFromCommandLine()
  {
      CBaseChainParams::Network network = NetworkIdFromCommandLine();
      if (network == CBaseChainParams::MAX_NETWORK_TYPES)
          return false;
  
      SelectParams(network);
      return true;
  }
  