text: // Copyright (c) 2010 Satoshi Nakamoto
  // Copyright (c) 2009-2016 The Bitcoin Core 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 "consensus/merkle.h"
  
  #include "tinyformat.h"
  #include "util.h"
  #include "utilstrencodings.h"
  
  #include <assert.h>
  
  #include <boost/assign/list_of.hpp>
  
  #include "chainparamsseeds.h"
  
  static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  {
      CMutableTransaction txNew;
      txNew.nVersion = 1;
      txNew.vin.resize(1);
      txNew.vout.resize(1);
      txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
      txNew.vout[0].nValue = genesisReward;
      txNew.vout[0].scriptPubKey = genesisOutputScript;
  
      CBlock genesis;
      genesis.nTime    = nTime;
      genesis.nBits    = nBits;
      genesis.nNonce   = nNonce;
      genesis.nVersion = nVersion;
      genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
      genesis.hashPrevBlock.SetNull();
      genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
      return genesis;
  }
  
  /**
   * Build the genesis block. Note that the output of its generation
   * transaction cannot be spent since it did not originally exist in the
   * database.
   *
   * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1386325540, nBits=0x1e0ffff0, nNonce=99943, 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
   */
  static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  {
      const char* pszTimestamp = "Arsenal 3 Bristol Academy 0 Vital Football - Arsenal 05:41 Mon, 27 May 2013";
      const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
      return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
  }
  
  /**
   * Main network
   */
  /**
   * 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
   */
  
  class CMainParams : public CChainParams {
  private:
      Consensus::Params digishieldConsensus;
      Consensus::Params auxpowConsensus;
  public:
      CMainParams() {
          strNetworkID = "main";
  
          // Blocks 0 - 144999 are conventional difficulty calculation
          consensus.nSubsidyHalvingInterval = 2592000;
          consensus.nMajorityEnforceBlockUpgrade = 750;
          consensus.nMajorityRejectBlockOutdated = 950;
          consensus.nMajorityWindow = 1000;
          consensus.BIP34Height = 11324612;
          consensus.BIP34Hash = uint256S("0x4bd3308d384e80094e4659f9a3245e6f444688edbec0ad88b9a5dfd4be87454e");
          // consensus.BIP65Height = 11324613; // Not enabled in Fastcoin yet
          consensus.BIP66Height = 11324613; // 80d1364201e5df97e696c03bdd24dc885e8617b9de51e453c10a4f629b1e797a - this is the last block that could be v2, 1900 blocks past the last v2 block
          consensus.powLimit = uint256S("0x00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 20;
          consensus.fDigishieldDifficultyCalculation = false;
          consensus.fPowAllowMinDifficultyBlocks = false;
          consensus.fPowAllowDigishieldMinDifficultyBlocks = false;
          consensus.fPowNoRetargeting = false;
          consensus.nRuleChangeActivationThreshold = 750; // 95% of 10,080
          consensus.nMinerConfirmationWindow = 1000; // 60 * 24 * 7 = 10,080 blocks, or one week
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
  
          // Deployment of BIP68, BIP112, and BIP113.
          // XXX: BIP heights and hashes all need to be updated to Fastcoin values
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1612942090; // 
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1613546890; // 
  
          // Deployment of SegWit (BIP141, BIP143, and BIP147)
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1612942090; // 
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 0; // Disabled
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000000000d7a0bfb8cae6a7");
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x4bd3308d384e80094e4659f9a3245e6f444688edbec0ad88b9a5dfd4be87454e"); 
  
          // AuxPoW parameters
          consensus.nAuxpowChainId = 0x00F1; // 241
          consensus.fStrictChainId = true;
          consensus.fAllowLegacyBlocks = true;
          consensus.nHeightEffective = 0;
          consensus.SubnHeight = 11324614;
          consensus.SubV = 67002;
          consensus.SubBlks = 2000;
          consensus.nCoinbaseMaturity = 60;
          consensus.nPowTargetTimespan = 60 * 60; // pre-digishield: 1 hours
          consensus.nPowTargetSpacing = 12; // 12 seconds
          consensus.DiffMode = 1;  //always 1
          consensus.DiffModeV2 = 11327900; //set to height for the new diffmode
  
          // Blocks 145000 - 371336 are Digishield without AuxPoW
          digishieldConsensus = consensus;
          digishieldConsensus.nHeightEffective = 11327900;
          digishieldConsensus.fSimplifiedRewards = true;
          digishieldConsensus.fDigishieldDifficultyCalculation = true;
          digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute
          digishieldConsensus.nPowTargetSpacing = 60; // 1 minute
          digishieldConsensus.nCoinbaseMaturity = 240;
  
          // Blocks 11327960+ are AuxPoW
          auxpowConsensus = digishieldConsensus;
          auxpowConsensus.nHeightEffective = 11327960;
          auxpowConsensus.fAllowLegacyBlocks = false;
  
          // Assemble the binary search tree of consensus parameters
          pConsensusRoot = &digishieldConsensus;
          digishieldConsensus.pLeft = &consensus;
          digishieldConsensus.pRight = &auxpowConsensus;
  
          /**
           * 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 32-bit integer with any alignment.
           */
          pchMessageStart[0] = 0xfd;
          pchMessageStart[1] = 0xc2;
          pchMessageStart[2] = 0xb5;
          pchMessageStart[3] = 0xdc;
          vAlertPubKey = ParseHex("04c1e1141275888057265baeef3d0b688446867c7fff1bb3497c4289e7e9c5e71de97b79d26e326bf86163300579b33b7352b27467bc408c9eeedbc6359669dbd2");
          nDefaultPort = 9526;
          nPruneAfterHeight = 100000;
  
          genesis = CreateGenesisBlock(1369761817, 128181112, 0x1e0ffff0, 1, 32 * COIN);
  
          consensus.hashGenesisBlock = genesis.GetHash();
          digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          assert(consensus.hashGenesisBlock == uint256S("0xecba185817b726ef62e53afb14241a8095bd9613d2d3df679911029b83c98e5b"));
          assert(genesis.hashMerkleRoot == uint256S("0xba3827aaf56440074e5436db36421d3a38645bc0f1a7c378a48b7daf3c078256"));
  
          // Note that of those with the service bits flag, most only support a subset of possible options
          vSeeds.push_back(CDNSSeedData("dnsseed01.fastcoin-project.org", "dnsseed01.fastcoin-project.org", true));
          vSeeds.push_back(CDNSSeedData("dnsseed02.fastcoin-project.org", "dnsseed02.fastcoin-project.org", true));
          vSeeds.push_back(CDNSSeedData("dnsseed03.fastcoin-project.org", "dnsseed03.fastcoin-project.org", true));
  
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,96);
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,20);
          //base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,35);
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,224);
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xb2)(0x1E).convert_to_container<std::vector<unsigned char> >();
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();
  
          //bech32_hrp = "fst";
          //TODO: fix this for fastcoin -- plddr
          vFixedSeeds.clear();
          vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
          //vFixedSeeds.clear();
  
          fMiningRequiresPeers = true;
          fDefaultConsistencyChecks = false;
          fRequireStandard = true;
          fMineBlocksOnDemand = false;
  
          checkpointData = (CCheckpointData) {
              boost::assign::map_list_of
  
          (  0, uint256S("0xecba185817b726ef62e53afb14241a8095bd9613d2d3df679911029b83c98e5b"))
          (  18, uint256S("0x632aa100b8055344be4e765defd1a07a1e3d053eb67332c9a95045eb87b7f3ab"))
          (  70, uint256S("0x9f0d4db126647e607a14da83f89b103f0fb5f29c6447c1574a011f7204b6a02f"))
          ( 105, uint256S("0xbf7bc864ecfb4803df34d1e05024654d9a65159c875f60fe07eeda2203ac734c"))
          ( 200, uint256S("0x3ba4bd313ce1a76e519ebc60c3e82154561c65c4b11ea82de1b3b0cc93f6eebb"))
          ( 299893, uint256S("0xca07e64a675616af303ec911343b2473904334b043f8e972eb9dc03720995f01"))
          ( 599787, uint256S("0x464cef0fed8c75ce46b48d19b97d70eb919edcca51523c793b830db1a710167e"))
          (1199646, uint256S("0xce0e285eb16b6940dd7dd7b0fea58f3d93ffdfc7544ff1274ca5ff9496773903"))
          (2399216, uint256S("0x4720496d86f9fea0a100c678d76192f753ba8da8f9c3d41eb739e479fa8e5bda"))
          (2899214, uint256S("0x8652192d0905663bceed4c10d5759c2691a767768f1f80b30a9447cfa0978ba9"))
          (2990306, uint256S("0x083f7168a31f5c222df1976db96d3a36b3c1d372a280bc7ca846c57194f00945"))
          (3380762, uint256S("0x85207e898babf569cf7d59f06d3bbfa80f4041e2747d4b401367380d0f3cc985"))
          (3621535, uint256S("0x0e69ac77ca6336a1d7faf5a37bbb68fe3305a601f1976cca35e9325bec9cd612"))
          (11324614, uint256S("0x9d20153b1bd432bbab37c747108ebd4096a0932b9cae85679d29c0ba6e89274f"))
          (11324615, uint256S("0x22f76f1a0691c23bac0203348275264f940ee983d7b54520592ee1ffc283bc3b"))
          (11327900, uint256S("0x4fb5712e776e946e65b4082e1414adcb7749cc692021d8af55ab2d6b1e2cf6a2"))
          (11327901, uint256S("0xcae0cfb959b835374a7c8af920e5f71efd94035e2ff8c0af0d64d257dcaf612a"))
          (11327933, uint256S("0x891ebf78c6b4e4449a04eb1be7ad37a93193b74f5089246e888224b832c11485"))
          (11335834, uint256S("0x1c3e92d7bfd8f250b6f696de84334cb86bc789c8141316fbbed9469026298a34"))
  
          };
  
          chainTxData = ChainTxData{
              // Data as of block 77e3f4a4bcb4a2c15e8015525e3d15b466f6c022f6ca82698f329edef7d9777e (height 2510150).
              // Tx estimate based on average of year 2018 (~27k transactions per day)
              1613567233, // * UNIX timestamp of last checkpoint block
              13601906,   // * total number of transactions between genesis and last checkpoint
                          //   (the tx=... number in the SetBestChain debug.log lines)
              0.3125      // * estimated number of transactions per second after checkpoint
          };
      }
  };
  static CMainParams mainParams;
  
  /**
   * Testnet (v3)
   */
  class CTestNetParams : public CChainParams {
  private:
      Consensus::Params digishieldConsensus;
      Consensus::Params auxpowConsensus;
      Consensus::Params minDifficultyConsensus;
  public:
      CTestNetParams() {
          strNetworkID = "test";
  
          // Blocks 0 - 144999 are pre-Digishield
          consensus.nHeightEffective = 0;
          consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
          consensus.fDigishieldDifficultyCalculation = false;
          consensus.nCoinbaseMaturity = 30;
          consensus.fPowAllowMinDifficultyBlocks = true;
          consensus.fPowAllowDigishieldMinDifficultyBlocks = false;
          consensus.nSubsidyHalvingInterval = 100000;
          consensus.nMajorityEnforceBlockUpgrade = 501;
          consensus.nMajorityRejectBlockOutdated = 750;
          consensus.nMajorityWindow = 1000;
          // BIP34 is never enforced in Fastcoin v2 blocks, so we enforce from v3
          consensus.BIP34Height = 708658;
          consensus.BIP34Hash = uint256S("0x21b8b97dcdb94caa67c7f8f6dbf22e61e0cfe0e46e1fff3528b22864659e9b38");
          // consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
          consensus.BIP66Height = 708658; // 21b8b97dcdb94caa67c7f8f6dbf22e61e0cfe0e46e1fff3528b22864659e9b38 - this is the last block that could be v2, 1900 blocks past the last v2 block
          consensus.powLimit = uint256S("0x00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 20;
          consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
          consensus.nPowTargetSpacing = 60; // 1 minute
          consensus.fPowNoRetargeting = false;
          consensus.nRuleChangeActivationThreshold = 2880; // 2 days (note this is significantly lower than Bitcoin standard)
          consensus.nMinerConfirmationWindow = 10080; // 60 * 24 * 7 = 10,080 blocks, or one week
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
  
          // Deployment of BIP68, BIP112, and BIP113.
          // XXX: BIP heights and hashes all need to be updated to Fastcoin values
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
  
          // Deployment of SegWit (BIP141, BIP143, and BIP147)
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 0; // Disabled
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000000000001030d1382ade");
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x6943eaeaba98dc7d09f7e73398daccb4abcabb18b66c8c875e52b07638d93951"); // 900,000
  
          // AuxPoW parameters
          consensus.nAuxpowChainId = 0x00F1; // 241
          consensus.fStrictChainId = true;
          consensus.fAllowLegacyBlocks = true;
          consensus.nHeightEffective = 0;
          consensus.SubnHeight = 11324614;
          consensus.SubV = 67002;
          consensus.SubBlks = 2000;
          consensus.nCoinbaseMaturity = 60;
          consensus.nPowTargetTimespan = 60 * 60; // pre-digishield: 1 hours
          consensus.nPowTargetSpacing = 12; // 12 seconds
          consensus.DiffMode = 1;  //always 1
          consensus.DiffModeV2 = 11327900; //set to height for the new diffmode
  
          // Blocks 145000 - 371336 are Digishield without AuxPoW
          digishieldConsensus = consensus;
          digishieldConsensus.nHeightEffective = 11327900;
          digishieldConsensus.fSimplifiedRewards = true;
          digishieldConsensus.fDigishieldDifficultyCalculation = true;
          digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute
          digishieldConsensus.nPowTargetSpacing = 60; // 1 minute
          digishieldConsensus.nCoinbaseMaturity = 240;
  
          // Blocks 11327960+ are AuxPoW
          auxpowConsensus = digishieldConsensus;
          auxpowConsensus.nHeightEffective = 11327960;
          auxpowConsensus.fAllowLegacyBlocks = false;
  
          // Assemble the binary search tree of consensus parameters
          pConsensusRoot = &digishieldConsensus;
          digishieldConsensus.pLeft = &consensus;
          digishieldConsensus.pRight = &auxpowConsensus;
  
  
          pchMessageStart[0] = 0xfc;
          pchMessageStart[1] = 0xc1;
          pchMessageStart[2] = 0xb7;
          pchMessageStart[3] = 0xdc;
          vAlertPubKey = ParseHex("042756726da3c7ef515d89212ee1705023d14be389e25fe15611585661b9a20021908b2b80a3c7200a0139dd2b26946606aab0eef9aa7689a6dc2c7eee237fa834");
          nDefaultPort = 19526;
          nPruneAfterHeight = 1000;
  
          genesis = CreateGenesisBlock(1391503289, 997879, 0x1e0ffff0, 1, 88 * COIN);
          consensus.hashGenesisBlock = genesis.GetHash();
          digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          minDifficultyConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          //assert(consensus.hashGenesisBlock == uint256S("0xbb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e"));
          //assert(genesis.hashMerkleRoot == uint256S("0x5b2a3f53f605d62c53e62932dac6925e3d74afa5a4b459745c36d42d0ed26a69"));
  
          vFixedSeeds.clear();
          vSeeds.clear();
          // nodes with support for servicebits filtering should be at the top
          //vSeeds.push_back(CDNSSeedData("jrn.me.uk", "testseed.jrn.me.uk"));
  
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,113); // 0x71
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196); // 0xc4
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,241); // 0xf1
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xcf).convert_to_container<std::vector<unsigned char> >();
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
  
          //TODO: fix this for fastcoin -- plddr
          //vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
  
          fMiningRequiresPeers = true;
          fDefaultConsistencyChecks = false;
          fRequireStandard = false;
          fMineBlocksOnDemand = false;
  
          checkpointData = (CCheckpointData) {
              boost::assign::map_list_of
              ( 0, uint256S("0xbb0a78264637406b6360aad926284d544d7049f45189db5664f3c4d07350559e"))
              ( 483173, uint256S("0xa804201ca0aceb7e937ef7a3c613a9b7589245b10cc095148c4ce4965b0b73b5"))
              ( 591117, uint256S("0x5f6b93b2c28cedf32467d900369b8be6700f0649388a7dbfd3ebd4a01b1ffad8"))
              ( 658924, uint256S("0xed6c8324d9a77195ee080f225a0fca6346495e08ded99bcda47a8eea5a8a620b"))
              ( 703635, uint256S("0x839fa54617adcd582d53030a37455c14a87a806f6615aa8213f13e196230ff7f"))
              ( 1000000, uint256S("0x1fe4d44ea4d1edb031f52f0d7c635db8190dc871a190654c41d2450086b8ef0e"))
              ( 1202214, uint256S("0xa2179767a87ee4e95944703976fee63578ec04fa3ac2fc1c9c2c83587d096977"))
          };
  
          chainTxData = ChainTxData{
              // Data as of block a2179767a87ee4e95944703976fee63578ec04fa3ac2fc1c9c2c83587d096977 (height 1202214)
              1514565123, // * UNIX timestamp of last checkpoint block
              2005610,    // * total number of transactions between genesis and last checkpoint
              1000 // * estimated number of transactions per day after checkpoint
          };
  
      }
  };
  static CTestNetParams testNetParams;
  
  /**
   * Regression test
   */
  class CRegTestParams : public CChainParams {
  private:
      Consensus::Params digishieldConsensus;
      Consensus::Params auxpowConsensus;
  public:
      CRegTestParams() {
          strNetworkID = "regtest";
          consensus.nSubsidyHalvingInterval = 150;
          consensus.nMajorityEnforceBlockUpgrade = 750;
          consensus.nMajorityRejectBlockOutdated = 950;
          consensus.nMajorityWindow = 1000;
          consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
          consensus.BIP34Hash = uint256();
          // consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
          consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
          consensus.powLimit = uint256S("0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 1;
          consensus.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
          consensus.nPowTargetSpacing = 1; // regtest: 1 second blocks
          consensus.fDigishieldDifficultyCalculation = false;
          consensus.fPowAllowMinDifficultyBlocks = true;
          consensus.fPowNoRetargeting = true;
          consensus.nRuleChangeActivationThreshold = 540; // 75% for testchains
          consensus.nMinerConfirmationWindow = 720; // Faster than normal for regtest (2,520 instead of 10,080)
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x00");
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x00");
  
          // AuxPow parameters
          consensus.nAuxpowChainId = 0x0062; // 98 - Josh Wise!
          consensus.fStrictChainId = true;
          consensus.fAllowLegacyBlocks = true;
  
          // Fastcoin parameters
          consensus.fSimplifiedRewards = true;
          consensus.nCoinbaseMaturity = 60; // For easier testability in RPC tests
  
          digishieldConsensus = consensus;
          digishieldConsensus.nHeightEffective = 10;
          digishieldConsensus.nPowTargetTimespan = 1; // regtest: also retarget every second in digishield mode, for conformity
          digishieldConsensus.fDigishieldDifficultyCalculation = true;
  
          auxpowConsensus = digishieldConsensus;
          auxpowConsensus.fAllowLegacyBlocks = false;
          auxpowConsensus.nHeightEffective = 20;
  
          // Assemble the binary search tree of parameters
          digishieldConsensus.pLeft = &consensus;
          digishieldConsensus.pRight = &auxpowConsensus;
          pConsensusRoot = &digishieldConsensus;
  
          pchMessageStart[0] = 0xfa;
          pchMessageStart[1] = 0xbf;
          pchMessageStart[2] = 0xb5;
          pchMessageStart[3] = 0xda;
          nDefaultPort = 29526;
          nPruneAfterHeight = 1000;
  
          genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 88 * COIN);
          consensus.hashGenesisBlock = genesis.GetHash();
          digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          //assert(consensus.hashGenesisBlock == uint256S("0x3d2160a3b5dc4a9d62e7e66a295f70313ac808440ef7400d6c0772171ce973a5"));
          //assert(genesis.hashMerkleRoot == uint256S("0x5b2a3f53f605d62c53e62932dac6925e3d74afa5a4b459745c36d42d0ed26a69"));
  
          vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
          vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.
  
          fMiningRequiresPeers = false;
          fDefaultConsistencyChecks = true;
          fRequireStandard = false;
          fMineBlocksOnDemand = true;
  
          checkpointData = (CCheckpointData){
              boost::assign::map_list_of
              ( 0, uint256S("0x3d2160a3b5dc4a9d62e7e66a295f70313ac808440ef7400d6c0772171ce973a5"))
          };
  
          chainTxData = ChainTxData{
              0,
              0,
              0
          };
  
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);  // 0x6f
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);  // 0xc4
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);  // 0xef
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
      }
  
      void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
      {
          consensus.vDeployments[d].nStartTime = nStartTime;
          consensus.vDeployments[d].nTimeout = nTimeout;
      }
  };
  static CRegTestParams regTestParams;
  
  static CChainParams *pCurrentParams = 0;
  
  const CChainParams &Params() {
      assert(pCurrentParams);
      return *pCurrentParams;
  }
  
  const Consensus::Params *Consensus::Params::GetConsensus(uint32_t nTargetHeight) const {
      if (nTargetHeight < this -> nHeightEffective && this -> pLeft != NULL) {
          return this -> pLeft -> GetConsensus(nTargetHeight);
      } else if (nTargetHeight > this -> nHeightEffective && this -> pRight != NULL) {
          const Consensus::Params *pCandidate = this -> pRight -> GetConsensus(nTargetHeight);
          if (pCandidate->nHeightEffective <= nTargetHeight) {
              return pCandidate;
          }
      }
  
      // No better match below the target height
      return this;
  }
  
  CChainParams& Params(const std::string& chain)
  {
      if (chain == CBaseChainParams::MAIN)
              return mainParams;
      else if (chain == CBaseChainParams::TESTNET)
              return testNetParams;
      else if (chain == CBaseChainParams::REGTEST)
              return regTestParams;
      else
          throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
  }
  
  void SelectParams(const std::string& network)
  {
      SelectBaseParams(network);
      pCurrentParams = &Params(network);
  }
  
  void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
  {
      regTestParams.UpdateBIP9Parameters(d, nStartTime, nTimeout);
  }
  