text: // Copyright (c) 2010 Satoshi Nakamoto
  // Copyright (c) 2009-2014 The Bitcoin Core developers
  // Copyright (c) 2014-2019 The Dash 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 "arith_uint256.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;
  }
  
  static CBlock CreateDevNetGenesisBlock(const uint256 &prevBlockHash, const std::string& devNetName, uint32_t nTime, uint32_t nNonce, uint32_t nBits, const CAmount& genesisReward)
  {
      assert(!devNetName.empty());
  
      CMutableTransaction txNew;
      txNew.nVersion = 1;
      txNew.vin.resize(1);
      txNew.vout.resize(1);
      // put height (BIP34) and devnet name into coinbase
      txNew.vin[0].scriptSig = CScript() << 1 << std::vector<unsigned char>(devNetName.begin(), devNetName.end());
      txNew.vout[0].nValue = genesisReward;
      txNew.vout[0].scriptPubKey = CScript() << OP_RETURN;
  
      CBlock genesis;
      genesis.nTime    = nTime;
      genesis.nBits    = nBits;
      genesis.nNonce   = nNonce;
      genesis.nVersion = 4;
      genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
      genesis.hashPrevBlock = prevBlockHash;
      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=00000ffd590b14, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=e0028e, nTime=1390095618, nBits=1e0ffff0, nNonce=28917698, vtx=1)
   *   CTransaction(hash=e0028e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
   *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d01044c5957697265642030392f4a616e2f3230313420546865204772616e64204578706572696d656e7420476f6573204c6976653a204f76657273746f636b2e636f6d204973204e6f7720416363657074696e6720426974636f696e73)
   *     CTxOut(nValue=50.00000000, scriptPubKey=0xA9037BAC7050C479B121CF)
   *   vMerkleTree: e0028e
   */
  static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  {
      const char* pszTimestamp = "Wired 09/Jan/2014 The Grand Experiment Goes Live: Overstock.com Is Now Accepting Bitcoins";
      const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
      return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
  }
  
  static CBlock FindDevNetGenesisBlock(const Consensus::Params& params, const CBlock &prevBlock, const CAmount& reward)
  {
      std::string devNetName = GetDevNetName();
      assert(!devNetName.empty());
  
      CBlock block = CreateDevNetGenesisBlock(prevBlock.GetHash(), devNetName.c_str(), prevBlock.nTime + 1, 0, prevBlock.nBits, reward);
  
      arith_uint256 bnTarget;
      bnTarget.SetCompact(block.nBits);
  
      for (uint32_t nNonce = 0; nNonce < UINT32_MAX; nNonce++) {
          block.nNonce = nNonce;
  
          uint256 hash = block.GetHash();
          if (UintToArith256(hash) <= bnTarget)
              return block;
      }
  
      // This is very unlikely to happen as we start the devnet with a very low difficulty. In many cases even the first
      // iteration of the above loop will give a result already
      error("FindDevNetGenesisBlock: could not find devnet genesis block for %s", devNetName);
      assert(false);
  }
  
  // this one is for testing only
  static Consensus::LLMQParams llmq5_60 = {
          .type = Consensus::LLMQ_5_60,
          .name = "llmq_5_60",
          .size = 5,
          .minSize = 3,
          .threshold = 3,
  
          .dkgInterval = 24, // one DKG per hour
          .dkgPhaseBlocks = 2,
          .dkgMiningWindowStart = 10, // dkgPhaseBlocks * 5 = after finalization
          .dkgMiningWindowEnd = 18,
          .dkgBadVotesThreshold = 8,
  
          .signingActiveQuorumCount = 2, // just a few ones to allow easier testing
  
          .keepOldConnections = 3,
  };
  
  static Consensus::LLMQParams llmq50_60 = {
          .type = Consensus::LLMQ_50_60,
          .name = "llmq_50_60",
          .size = 50,
          .minSize = 40,
          .threshold = 30,
  
          .dkgInterval = 24, // one DKG per hour
          .dkgPhaseBlocks = 2,
          .dkgMiningWindowStart = 10, // dkgPhaseBlocks * 5 = after finalization
          .dkgMiningWindowEnd = 18,
          .dkgBadVotesThreshold = 40,
  
          .signingActiveQuorumCount = 24, // a full day worth of LLMQs
  
          .keepOldConnections = 25,
  };
  
  static Consensus::LLMQParams llmq400_60 = {
          .type = Consensus::LLMQ_400_60,
          .name = "llmq_400_60",
          .size = 400,
          .minSize = 300,
          .threshold = 240,
  
          .dkgInterval = 24 * 12, // one DKG every 12 hours
          .dkgPhaseBlocks = 4,
          .dkgMiningWindowStart = 20, // dkgPhaseBlocks * 5 = after finalization
          .dkgMiningWindowEnd = 28,
          .dkgBadVotesThreshold = 300,
  
          .signingActiveQuorumCount = 4, // two days worth of LLMQs
  
          .keepOldConnections = 5,
  };
  
  // Used for deployment and min-proto-version signalling, so it needs a higher threshold
  static Consensus::LLMQParams llmq400_85 = {
          .type = Consensus::LLMQ_400_85,
          .name = "llmq_400_85",
          .size = 400,
          .minSize = 350,
          .threshold = 340,
  
          .dkgInterval = 24 * 24, // one DKG every 24 hours
          .dkgPhaseBlocks = 4,
          .dkgMiningWindowStart = 20, // dkgPhaseBlocks * 5 = after finalization
          .dkgMiningWindowEnd = 48, // give it a larger mining window to make sure it is mined
          .dkgBadVotesThreshold = 300,
  
          .signingActiveQuorumCount = 4, // two days worth of LLMQs
  
          .keepOldConnections = 5,
  };
  
  
  /**
   * 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 {
  public:
      CMainParams() {
          strNetworkID = "main";
          consensus.nSubsidyHalvingInterval = 210240; // Note: actual number of blocks per calendar year with DGW v3 is ~200700 (for example 449750 - 249050)
          consensus.nMasternodePaymentsStartBlock = 100000; // not true, but it's ok as long as it's less then nMasternodePaymentsIncreaseBlock
          consensus.nMasternodePaymentsIncreaseBlock = 158000; // actual historical value
          consensus.nMasternodePaymentsIncreasePeriod = 576*30; // 17280 - actual historical value
          consensus.nInstantSendConfirmationsRequired = 6;
          consensus.nInstantSendKeepLock = 24;
          consensus.nInstantSendSigsRequired = 6;
          consensus.nInstantSendSigsTotal = 10;
          consensus.nBudgetPaymentsStartBlock = 328008; // actual historical value
          consensus.nBudgetPaymentsCycleBlocks = 16616; // ~(60*24*30)/2.6, actual number of blocks per month is 200700 / 12 = 16725
          consensus.nBudgetPaymentsWindowBlocks = 100;
          consensus.nSuperblockStartBlock = 614820; // The block at which 12.1 goes live (end of final 12.0 budget cycle)
          consensus.nSuperblockStartHash = uint256S("0000000000020cb27c7ef164d21003d5d20cdca2f54dd9a9ca6d45f4d47f8aa3");
          consensus.nSuperblockCycle = 16616; // ~(60*24*30)/2.6, actual number of blocks per month is 200700 / 12 = 16725
          consensus.nGovernanceMinQuorum = 10;
          consensus.nGovernanceFilterElements = 20000;
          consensus.nMasternodeMinimumConfirmations = 15;
          consensus.BIP34Height = 951;
          consensus.BIP34Hash = uint256S("0x000001f35e70f7c5705f64c6c5cc3dea9449e74d5b5c7cf74dad1bcca14a8012");
          consensus.BIP65Height = 619382; // 00000000000076d8fcea02ec0963de4abfd01e771fec0863f960c2c64fe6f357
          consensus.BIP66Height = 245817; // 00000000000b1fa2dfa312863570e13fae9ca7b5566cb27e55422620b469aefa
          consensus.DIP0001Height = 782208;
          consensus.DIP0003Height = 1028160;
          consensus.DIP0003EnforcementHeight = 1047200;
          consensus.DIP0003EnforcementHash = uint256S("000000000000002d1734087b4c5afc3133e4e1c3e1a89218f62bcd9bb3d17f81");
          consensus.powLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 20
          consensus.nPowTargetTimespan = 24 * 60 * 60; // Dash: 1 day
          consensus.nPowTargetSpacing = 2.5 * 60; // Dash: 2.5 minutes
          consensus.fPowAllowMinDifficultyBlocks = false;
          consensus.fPowNoRetargeting = false;
          consensus.nPowKGWHeight = 15200;
          consensus.nPowDGWHeight = 34140;
          consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
          consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
          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.
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1486252800; // Feb 5th, 2017
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1517788800; // Feb 5th, 2018
  
          // Deployment of DIP0001
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nStartTime = 1508025600; // Oct 15th, 2017
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nTimeout = 1539561600; // Oct 15th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nWindowSize = 4032;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nThreshold = 3226; // 80% of 4032
  
          // Deployment of BIP147
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].bit = 2;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nStartTime = 1524477600; // Apr 23th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nTimeout = 1556013600; // Apr 23th, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nWindowSize = 4032;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nThreshold = 3226; // 80% of 4032
  
          // Deployment of DIP0003
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].bit = 3;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nStartTime = 1546300800; // Jan 1st, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nTimeout = 1577836800; // Jan 1st, 2020
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nWindowSize = 4032;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nThreshold = 3226; // 80% of 4032
  
          // Deployment of DIP0008
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].bit = 4;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nStartTime = 1557878400; // May 15th, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nTimeout = 1589500800; // May 15th, 2020
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nWindowSize = 4032;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nThreshold = 3226; // 80% of 4032
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000146103ebd818111fae85"); // 1067570
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x000000000000001e09926bcf5fa4513d23e870a34f74e38200db99eb3f5b7a70"); // 1067570
  
          /**
           * 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] = 0xbf;
          pchMessageStart[1] = 0x0c;
          pchMessageStart[2] = 0x6b;
          pchMessageStart[3] = 0xbd;
          vAlertPubKey = ParseHex("048240a8748a80a286b270ba126705ced4f2ce5a7847b3610ea3c06513150dade2a8512ed5ea86320824683fc0818f0ac019214973e677acd1244f6d0571fc5103");
          nDefaultPort = 9999;
          nPruneAfterHeight = 100000;
  
          genesis = CreateGenesisBlock(1390095618, 28917698, 0x1e0ffff0, 1, 50 * COIN);
          consensus.hashGenesisBlock = genesis.GetHash();
          assert(consensus.hashGenesisBlock == uint256S("0x00000ffd590b1485b3caadc19b22e6379c733355108f107a430458cdf3407ab6"));
          assert(genesis.hashMerkleRoot == uint256S("0xe0028eb9648db56b1ac77cf090b99048a8007e2bb64b68f092c03c7f56a662c7"));
  
  
          vSeeds.push_back(CDNSSeedData("dash.org", "dnsseed.dash.org"));
          vSeeds.push_back(CDNSSeedData("dashdot.io", "dnsseed.dashdot.io"));
          vSeeds.push_back(CDNSSeedData("masternode.io", "dnsseed.masternode.io"));
  
          // Dash addresses start with 'X'
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,76);
          // Dash script addresses start with '7'
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,16);
          // Dash private keys start with '7' or 'X'
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,204);
          // Dash BIP32 pubkeys start with 'xpub' (Bitcoin defaults)
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xB2)(0x1E).convert_to_container<std::vector<unsigned char> >();
          // Dash BIP32 prvkeys start with 'xprv' (Bitcoin defaults)
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();
  
          // Dash BIP44 coin type is '5'
          nExtCoinType = 5;
  
          vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
  
          // long living quorum params
          consensus.llmqs[Consensus::LLMQ_50_60] = llmq50_60;
          consensus.llmqs[Consensus::LLMQ_400_60] = llmq400_60;
          consensus.llmqs[Consensus::LLMQ_400_85] = llmq400_85;
          consensus.llmqChainLocks = Consensus::LLMQ_400_60;
          consensus.llmqForInstantSend = Consensus::LLMQ_50_60;
  
          fDefaultConsistencyChecks = false;
          fRequireStandard = true;
          fRequireRoutableExternalIP = true;
          fMineBlocksOnDemand = false;
          fAllowMultipleAddressesFromGroup = false;
          fAllowMultiplePorts = false;
  
          nPoolMinParticipants = 3;
          nPoolMaxParticipants = 5;
          nFulfilledRequestExpireTime = 60*60; // fulfilled requests expire in 1 hour
  
          vSporkAddresses = {"Xgtyuk76vhuFW2iT7UAiHgNdWXCf3J34wh"};
          nMinSporkKeys = 1;
          fBIP9CheckMasternodesUpgraded = true;
  
          checkpointData = (CCheckpointData) {
              boost::assign::map_list_of
              (  1500, uint256S("0x000000aaf0300f59f49bc3e970bad15c11f961fe2347accffff19d96ec9778e3"))
              (  4991, uint256S("0x000000003b01809551952460744d5dbb8fcbd6cbae3c220267bf7fa43f837367"))
              (  9918, uint256S("0x00000000213e229f332c0ffbe34defdaa9e74de87f2d8d1f01af8d121c3c170b"))
              ( 16912, uint256S("0x00000000075c0d10371d55a60634da70f197548dbbfa4123e12abfcbc5738af9"))
              ( 23912, uint256S("0x0000000000335eac6703f3b1732ec8b2f89c3ba3a7889e5767b090556bb9a276"))
              ( 35457, uint256S("0x0000000000b0ae211be59b048df14820475ad0dd53b9ff83b010f71a77342d9f"))
              ( 45479, uint256S("0x000000000063d411655d590590e16960f15ceea4257122ac430c6fbe39fbf02d"))
              ( 55895, uint256S("0x0000000000ae4c53a43639a4ca027282f69da9c67ba951768a20415b6439a2d7"))
              ( 68899, uint256S("0x0000000000194ab4d3d9eeb1f2f792f21bb39ff767cb547fe977640f969d77b7"))
              ( 74619, uint256S("0x000000000011d28f38f05d01650a502cc3f4d0e793fbc26e2a2ca71f07dc3842"))
              ( 75095, uint256S("0x0000000000193d12f6ad352a9996ee58ef8bdc4946818a5fec5ce99c11b87f0d"))
              ( 88805, uint256S("0x00000000001392f1652e9bf45cd8bc79dc60fe935277cd11538565b4a94fa85f"))
              ( 107996, uint256S("0x00000000000a23840ac16115407488267aa3da2b9bc843e301185b7d17e4dc40"))
              ( 137993, uint256S("0x00000000000cf69ce152b1bffdeddc59188d7a80879210d6e5c9503011929c3c"))
              ( 167996, uint256S("0x000000000009486020a80f7f2cc065342b0c2fb59af5e090cd813dba68ab0fed"))
              ( 207992, uint256S("0x00000000000d85c22be098f74576ef00b7aa00c05777e966aff68a270f1e01a5"))
              ( 312645, uint256S("0x0000000000059dcb71ad35a9e40526c44e7aae6c99169a9e7017b7d84b1c2daf"))
              ( 407452, uint256S("0x000000000003c6a87e73623b9d70af7cd908ae22fee466063e4ffc20be1d2dbc"))
              ( 523412, uint256S("0x000000000000e54f036576a10597e0e42cc22a5159ce572f999c33975e121d4d"))
              ( 523930, uint256S("0x0000000000000bccdb11c2b1cfb0ecab452abf267d89b7f46eaf2d54ce6e652c"))
              ( 750000, uint256S("0x00000000000000b4181bbbdddbae464ce11fede5d0292fb63fdede1e7c8ab21c"))
              ( 888900, uint256S("0x0000000000000026c29d576073ab51ebd1d3c938de02e9a44c7ee9e16f82db28"))
              ( 967800, uint256S("0x0000000000000024e26c7df7e46d673724d223cf4ca2b2adc21297cc095600f4"))
              ( 1067570, uint256S("0x000000000000001e09926bcf5fa4513d23e870a34f74e38200db99eb3f5b7a70"))
          };
  
          chainTxData = ChainTxData{
              1557610432, // * UNIX timestamp of last known number of transactions (Block 1068571)
              14380723,   // * total number of transactions between genesis and that timestamp
                          //   (the tx=... number in the SetBestChain debug.log lines)
              0.1         // * estimated number of transactions per second after that timestamp
          };
      }
  };
  static CMainParams mainParams;
  
  /**
   * Testnet (v3)
   */
  class CTestNetParams : public CChainParams {
  public:
      CTestNetParams() {
          strNetworkID = "test";
          consensus.nSubsidyHalvingInterval = 210240;
          consensus.nMasternodePaymentsStartBlock = 4010; // not true, but it's ok as long as it's less then nMasternodePaymentsIncreaseBlock
          consensus.nMasternodePaymentsIncreaseBlock = 4030;
          consensus.nMasternodePaymentsIncreasePeriod = 10;
          consensus.nInstantSendConfirmationsRequired = 2;
          consensus.nInstantSendKeepLock = 6;
          consensus.nInstantSendSigsRequired = 6;
          consensus.nInstantSendSigsTotal = 10;
          consensus.nBudgetPaymentsStartBlock = 4100;
          consensus.nBudgetPaymentsCycleBlocks = 50;
          consensus.nBudgetPaymentsWindowBlocks = 10;
          consensus.nSuperblockStartBlock = 4200; // NOTE: Should satisfy nSuperblockStartBlock > nBudgetPeymentsStartBlock
          consensus.nSuperblockStartHash = uint256(); // do not check this on testnet
          consensus.nSuperblockCycle = 24; // Superblocks can be issued hourly on testnet
          consensus.nGovernanceMinQuorum = 1;
          consensus.nGovernanceFilterElements = 500;
          consensus.nMasternodeMinimumConfirmations = 1;
          consensus.BIP34Height = 76;
          consensus.BIP34Hash = uint256S("0x000008ebb1db2598e897d17275285767717c6acfeac4c73def49fbea1ddcbcb6");
          consensus.BIP65Height = 2431; // 0000039cf01242c7f921dcb4806a5994bc003b48c1973ae0c89b67809c2bb2ab
          consensus.BIP66Height = 2075; // 0000002acdd29a14583540cb72e1c5cc83783560e38fa7081495d474fe1671f7
          consensus.DIP0001Height = 5500;
          consensus.DIP0003Height = 7000;
          consensus.DIP0003EnforcementHeight = 7300;
          consensus.DIP0003EnforcementHash = uint256S("00000055ebc0e974ba3a3fb785c5ad4365a39637d4df168169ee80d313612f8f");
          consensus.powLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 20
          consensus.nPowTargetTimespan = 24 * 60 * 60; // Dash: 1 day
          consensus.nPowTargetSpacing = 2.5 * 60; // Dash: 2.5 minutes
          consensus.fPowAllowMinDifficultyBlocks = true;
          consensus.fPowNoRetargeting = false;
          consensus.nPowKGWHeight = 4002; // nPowKGWHeight >= nPowDGWHeight means "no KGW"
          consensus.nPowDGWHeight = 4002;
          consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
          consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
          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.
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1544655600; // Dec 13th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1576191600; // Dec 13th, 2019
  
          // Deployment of DIP0001
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nStartTime = 1544655600; // Dec 13th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nTimeout = 1576191600; // Dec 13th, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nThreshold = 50; // 50% of 100
  
          // Deployment of BIP147
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].bit = 2;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nStartTime = 1544655600; // Dec 13th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nTimeout = 1576191600; // Dec 13th, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nThreshold = 50; // 50% of 100
  
          // Deployment of DIP0003
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].bit = 3;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nStartTime = 1544655600; // Dec 13th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nTimeout = 1576191600; // Dec 13th, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nThreshold = 50; // 50% of 100
  
          // Deployment of DIP0008
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].bit = 4;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nStartTime = 1553126400; // Mar 21st, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nTimeout = 1584748800; // Mar 21st, 2020
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nThreshold = 50; // 50% of 100
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000062cd3e94ad2d62"); // 95930
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x0000000005ae4db9746d6cad8e0ccebdef1e05afec9c40809f31457fdaf7d843"); // 95930
  
          pchMessageStart[0] = 0xce;
          pchMessageStart[1] = 0xe2;
          pchMessageStart[2] = 0xca;
          pchMessageStart[3] = 0xff;
          vAlertPubKey = ParseHex("04517d8a699cb43d3938d7b24faaff7cda448ca4ea267723ba614784de661949bf632d6304316b244646dea079735b9a6fc4af804efb4752075b9fe2245e14e412");
          nDefaultPort = 19999;
          nPruneAfterHeight = 1000;
  
          genesis = CreateGenesisBlock(1390666206UL, 3861367235UL, 0x1e0ffff0, 1, 50 * COIN);
          consensus.hashGenesisBlock = genesis.GetHash();
          assert(consensus.hashGenesisBlock == uint256S("0x00000bafbc94add76cb75e2ec92894837288a481e5c005f6563d91623bf8bc2c"));
          assert(genesis.hashMerkleRoot == uint256S("0xe0028eb9648db56b1ac77cf090b99048a8007e2bb64b68f092c03c7f56a662c7"));
  
          vFixedSeeds.clear();
          vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
  
          vSeeds.clear();
          // nodes with support for servicebits filtering should be at the top
          vSeeds.push_back(CDNSSeedData("dashdot.io",  "testnet-seed.dashdot.io"));
          vSeeds.push_back(CDNSSeedData("masternode.io", "test.dnsseed.masternode.io"));
  
          // Testnet Dash addresses start with 'y'
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,140);
          // Testnet Dash script addresses start with '8' or '9'
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,19);
          // Testnet private keys start with '9' or 'c' (Bitcoin defaults)
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
          // Testnet Dash BIP32 pubkeys start with 'tpub' (Bitcoin defaults)
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
          // Testnet Dash BIP32 prvkeys start with 'tprv' (Bitcoin defaults)
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
  
          // Testnet Dash BIP44 coin type is '1' (All coin's testnet default)
          nExtCoinType = 1;
  
          // long living quorum params
          consensus.llmqs[Consensus::LLMQ_50_60] = llmq50_60;
          consensus.llmqs[Consensus::LLMQ_400_60] = llmq400_60;
          consensus.llmqs[Consensus::LLMQ_400_85] = llmq400_85;
          consensus.llmqChainLocks = Consensus::LLMQ_50_60;
          consensus.llmqForInstantSend = Consensus::LLMQ_50_60;
  
          fDefaultConsistencyChecks = false;
          fRequireStandard = false;
          fRequireRoutableExternalIP = true;
          fMineBlocksOnDemand = false;
          fAllowMultipleAddressesFromGroup = false;
          fAllowMultiplePorts = true;
  
          nPoolMinParticipants = 3;
          nPoolMaxParticipants = 5;
          nFulfilledRequestExpireTime = 5*60; // fulfilled requests expire in 5 minutes
  
          vSporkAddresses = {"yjPtiKh2uwk3bDutTEA2q9mCtXyiZRWn55"};
          nMinSporkKeys = 1;
          fBIP9CheckMasternodesUpgraded = true;
  
          checkpointData = (CCheckpointData) {
              boost::assign::map_list_of
              (    261, uint256S("0x00000c26026d0815a7e2ce4fa270775f61403c040647ff2c3091f99e894a4618"))
              (   1999, uint256S("0x00000052e538d27fa53693efe6fb6892a0c1d26c0235f599171c48a3cce553b1"))
              (   2999, uint256S("0x0000024bc3f4f4cb30d29827c13d921ad77d2c6072e586c7f60d83c2722cdcc5"))
              (  96090, uint256S("0x00000000033df4b94d17ab43e999caaf6c4735095cc77703685da81254d09bba"))
          };
  
          chainTxData = ChainTxData{
              1557603759, // * UNIX timestamp of last known number of transactions (Block 96717)
              968552,     // * total number of transactions between genesis and that timestamp
                          //   (the tx=... number in the SetBestChain debug.log lines)
              0.01        // * estimated number of transactions per second after that timestamp
          };
  
      }
  };
  static CTestNetParams testNetParams;
  
  /**
   * Devnet
   */
  class CDevNetParams : public CChainParams {
  public:
      CDevNetParams() {
          strNetworkID = "dev";
          consensus.nSubsidyHalvingInterval = 210240;
          consensus.nMasternodePaymentsStartBlock = 4010; // not true, but it's ok as long as it's less then nMasternodePaymentsIncreaseBlock
          consensus.nMasternodePaymentsIncreaseBlock = 4030;
          consensus.nMasternodePaymentsIncreasePeriod = 10;
          consensus.nInstantSendConfirmationsRequired = 2;
          consensus.nInstantSendKeepLock = 6;
          consensus.nInstantSendSigsRequired = 6;
          consensus.nInstantSendSigsTotal = 10;
          consensus.nBudgetPaymentsStartBlock = 4100;
          consensus.nBudgetPaymentsCycleBlocks = 50;
          consensus.nBudgetPaymentsWindowBlocks = 10;
          consensus.nSuperblockStartBlock = 4200; // NOTE: Should satisfy nSuperblockStartBlock > nBudgetPeymentsStartBlock
          consensus.nSuperblockStartHash = uint256(); // do not check this on devnet
          consensus.nSuperblockCycle = 24; // Superblocks can be issued hourly on devnet
          consensus.nGovernanceMinQuorum = 1;
          consensus.nGovernanceFilterElements = 500;
          consensus.nMasternodeMinimumConfirmations = 1;
          consensus.BIP34Height = 1; // BIP34 activated immediately on devnet
          consensus.BIP65Height = 1; // BIP65 activated immediately on devnet
          consensus.BIP66Height = 1; // BIP66 activated immediately on devnet
          consensus.DIP0001Height = 2; // DIP0001 activated immediately on devnet
          consensus.DIP0003Height = 2; // DIP0003 activated immediately on devnet
          consensus.DIP0003EnforcementHeight = 2; // DIP0003 activated immediately on devnet
          consensus.DIP0003EnforcementHash = uint256();
          consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 1
          consensus.nPowTargetTimespan = 24 * 60 * 60; // Dash: 1 day
          consensus.nPowTargetSpacing = 2.5 * 60; // Dash: 2.5 minutes
          consensus.fPowAllowMinDifficultyBlocks = true;
          consensus.fPowNoRetargeting = false;
          consensus.nPowKGWHeight = 4001; // nPowKGWHeight >= nPowDGWHeight means "no KGW"
          consensus.nPowDGWHeight = 4001;
          consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
          consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
          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.
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1506556800; // September 28th, 2017
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1538092800; // September 28th, 2018
  
          // Deployment of DIP0001
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nStartTime = 1505692800; // Sep 18th, 2017
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nTimeout = 1537228800; // Sep 18th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nThreshold = 50; // 50% of 100
  
          // Deployment of BIP147
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].bit = 2;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nStartTime = 1517792400; // Feb 5th, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nTimeout = 1549328400; // Feb 5th, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nThreshold = 50; // 50% of 100
  
          // Deployment of DIP0003
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].bit = 3;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nStartTime = 1535752800; // Sep 1st, 2018
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nTimeout = 1567288800; // Sep 1st, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nThreshold = 50; // 50% of 100
  
          // Deployment of DIP0008
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].bit = 4;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nStartTime = 1553126400; // Mar 21st, 2019
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nTimeout = 1584748800; // Mar 21st, 2020
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nWindowSize = 100;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nThreshold = 50; // 50% of 100
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000000000000000000");
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x000000000000000000000000000000000000000000000000000000000000000");
  
          pchMessageStart[0] = 0xe2;
          pchMessageStart[1] = 0xca;
          pchMessageStart[2] = 0xff;
          pchMessageStart[3] = 0xce;
          vAlertPubKey = ParseHex("04517d8a699cb43d3938d7b24faaff7cda448ca4ea267723ba614784de661949bf632d6304316b244646dea079735b9a6fc4af804efb4752075b9fe2245e14e412");
          nDefaultPort = 19999;
          nPruneAfterHeight = 1000;
  
          genesis = CreateGenesisBlock(1417713337, 1096447, 0x207fffff, 1, 50 * COIN);
          consensus.hashGenesisBlock = genesis.GetHash();
          assert(consensus.hashGenesisBlock == uint256S("0x000008ca1832a4baf228eb1553c03d3a2c8e02399550dd6ea8d65cec3ef23d2e"));
          assert(genesis.hashMerkleRoot == uint256S("0xe0028eb9648db56b1ac77cf090b99048a8007e2bb64b68f092c03c7f56a662c7"));
  
          devnetGenesis = FindDevNetGenesisBlock(consensus, genesis, 50 * COIN);
          consensus.hashDevnetGenesisBlock = devnetGenesis.GetHash();
  
          vFixedSeeds.clear();
          vSeeds.clear();
          //vSeeds.push_back(CDNSSeedData("dashevo.org",  "devnet-seed.dashevo.org"));
  
          // Testnet Dash addresses start with 'y'
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,140);
          // Testnet Dash script addresses start with '8' or '9'
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,19);
          // Testnet private keys start with '9' or 'c' (Bitcoin defaults)
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
          // Testnet Dash BIP32 pubkeys start with 'tpub' (Bitcoin defaults)
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
          // Testnet Dash BIP32 prvkeys start with 'tprv' (Bitcoin defaults)
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
  
          // Testnet Dash BIP44 coin type is '1' (All coin's testnet default)
          nExtCoinType = 1;
  
          // long living quorum params
          consensus.llmqs[Consensus::LLMQ_50_60] = llmq50_60;
          consensus.llmqs[Consensus::LLMQ_400_60] = llmq400_60;
          consensus.llmqs[Consensus::LLMQ_400_85] = llmq400_85;
          consensus.llmqChainLocks = Consensus::LLMQ_50_60;
          consensus.llmqForInstantSend = Consensus::LLMQ_50_60;
  
          fDefaultConsistencyChecks = false;
          fRequireStandard = false;
          fMineBlocksOnDemand = false;
          fAllowMultipleAddressesFromGroup = true;
          fAllowMultiplePorts = true;
  
          nPoolMinParticipants = 3;
          nPoolMaxParticipants = 5;
          nFulfilledRequestExpireTime = 5*60; // fulfilled requests expire in 5 minutes
  
          vSporkAddresses = {"yjPtiKh2uwk3bDutTEA2q9mCtXyiZRWn55"};
          nMinSporkKeys = 1;
          // devnets are started with no blocks and no MN, so we can't check for upgraded MN (as there are none)
          fBIP9CheckMasternodesUpgraded = false;
  
          checkpointData = (CCheckpointData) {
              boost::assign::map_list_of
              (      0, uint256S("0x000008ca1832a4baf228eb1553c03d3a2c8e02399550dd6ea8d65cec3ef23d2e"))
              (      1, devnetGenesis.GetHash())
          };
  
          chainTxData = ChainTxData{
              devnetGenesis.GetBlockTime(), // * UNIX timestamp of devnet genesis block
              2,                            // * we only have 2 coinbase transactions when a devnet is started up
              0.01                          // * estimated number of transactions per second
          };
      }
  
      void UpdateSubsidyAndDiffParams(int nMinimumDifficultyBlocks, int nHighSubsidyBlocks, int nHighSubsidyFactor)
      {
          consensus.nMinimumDifficultyBlocks = nMinimumDifficultyBlocks;
          consensus.nHighSubsidyBlocks = nHighSubsidyBlocks;
          consensus.nHighSubsidyFactor = nHighSubsidyFactor;
      }
  
      void UpdateLLMQChainLocks(Consensus::LLMQType llmqType) {
          consensus.llmqChainLocks = llmqType;
      }
  };
  static CDevNetParams *devNetParams;
  
  
  /**
   * Regression test
   */
  class CRegTestParams : public CChainParams {
  public:
      CRegTestParams() {
          strNetworkID = "regtest";
          consensus.nSubsidyHalvingInterval = 150;
          consensus.nMasternodePaymentsStartBlock = 240;
          consensus.nMasternodePaymentsIncreaseBlock = 350;
          consensus.nMasternodePaymentsIncreasePeriod = 10;
          consensus.nInstantSendConfirmationsRequired = 2;
          consensus.nInstantSendKeepLock = 6;
          consensus.nInstantSendSigsRequired = 3;
          consensus.nInstantSendSigsTotal = 5;
          consensus.nBudgetPaymentsStartBlock = 1000;
          consensus.nBudgetPaymentsCycleBlocks = 50;
          consensus.nBudgetPaymentsWindowBlocks = 10;
          consensus.nSuperblockStartBlock = 1500;
          consensus.nSuperblockStartHash = uint256(); // do not check this on regtest
          consensus.nSuperblockCycle = 10;
          consensus.nGovernanceMinQuorum = 1;
          consensus.nGovernanceFilterElements = 100;
          consensus.nMasternodeMinimumConfirmations = 1;
          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.DIP0001Height = 2000;
          consensus.DIP0003Height = 432;
          consensus.DIP0003EnforcementHeight = 500;
          consensus.DIP0003EnforcementHash = uint256();
          consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); // ~uint256(0) >> 1
          consensus.nPowTargetTimespan = 24 * 60 * 60; // Dash: 1 day
          consensus.nPowTargetSpacing = 2.5 * 60; // Dash: 2.5 minutes
          consensus.fPowAllowMinDifficultyBlocks = true;
          consensus.fPowNoRetargeting = true;
          consensus.nPowKGWHeight = 15200; // same as mainnet
          consensus.nPowDGWHeight = 34140; // same as mainnet
          consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
          consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
          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_DIP0001].bit = 1;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0001].nTimeout = 999999999999ULL;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].bit = 2;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_BIP147].nTimeout = 999999999999ULL;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].bit = 3;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0003].nTimeout = 999999999999ULL;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].bit = 4;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].nStartTime = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_DIP0008].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");
  
          pchMessageStart[0] = 0xfc;
          pchMessageStart[1] = 0xc1;
          pchMessageStart[2] = 0xb7;
          pchMessageStart[3] = 0xdc;
          nDefaultPort = 19994;
          nPruneAfterHeight = 1000;
  
          genesis = CreateGenesisBlock(1417713337, 1096447, 0x207fffff, 1, 50 * COIN);
          consensus.hashGenesisBlock = genesis.GetHash();
          assert(consensus.hashGenesisBlock == uint256S("0x000008ca1832a4baf228eb1553c03d3a2c8e02399550dd6ea8d65cec3ef23d2e"));
          assert(genesis.hashMerkleRoot == uint256S("0xe0028eb9648db56b1ac77cf090b99048a8007e2bb64b68f092c03c7f56a662c7"));
  
          vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
          vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.
  
          fDefaultConsistencyChecks = true;
          fRequireStandard = false;
          fRequireRoutableExternalIP = false;
          fMineBlocksOnDemand = true;
          fAllowMultipleAddressesFromGroup = true;
          fAllowMultiplePorts = true;
  
          nFulfilledRequestExpireTime = 5*60; // fulfilled requests expire in 5 minutes
  
          // privKey: cP4EKFyJsHT39LDqgdcB43Y3YXjNyjb5Fuas1GQSeAtjnZWmZEQK
          vSporkAddresses = {"yj949n1UH6fDhw6HtVE5VMj2iSTaSWBMcW"};
          nMinSporkKeys = 1;
          // regtest usually has no masternodes in most tests, so don't check for upgraged MNs
          fBIP9CheckMasternodesUpgraded = false;
  
          checkpointData = (CCheckpointData){
              boost::assign::map_list_of
              ( 0, uint256S("0x000008ca1832a4baf228eb1553c03d3a2c8e02399550dd6ea8d65cec3ef23d2e"))
          };
  
          chainTxData = ChainTxData{
              0,
              0,
              0
          };
  
          // Regtest Dash addresses start with 'y'
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,140);
          // Regtest Dash script addresses start with '8' or '9'
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,19);
          // Regtest private keys start with '9' or 'c' (Bitcoin defaults)
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
          // Regtest Dash BIP32 pubkeys start with 'tpub' (Bitcoin defaults)
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
          // Regtest Dash BIP32 prvkeys start with 'tprv' (Bitcoin defaults)
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
  
          // Regtest Dash BIP44 coin type is '1' (All coin's testnet default)
          nExtCoinType = 1;
  
          // long living quorum params
          consensus.llmqs[Consensus::LLMQ_5_60] = llmq5_60;
          consensus.llmqs[Consensus::LLMQ_50_60] = llmq50_60;
          consensus.llmqChainLocks = Consensus::LLMQ_5_60;
          consensus.llmqForInstantSend = Consensus::LLMQ_5_60;
      }
  
      void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int64_t nWindowSize, int64_t nThreshold)
      {
          consensus.vDeployments[d].nStartTime = nStartTime;
          consensus.vDeployments[d].nTimeout = nTimeout;
          if (nWindowSize != -1) {
              consensus.vDeployments[d].nWindowSize = nWindowSize;
          }
          if (nThreshold != -1) {
              consensus.vDeployments[d].nThreshold = nThreshold;
          }
      }
  
      void UpdateDIP3Parameters(int nActivationHeight, int nEnforcementHeight)
      {
          consensus.DIP0003Height = nActivationHeight;
          consensus.DIP0003EnforcementHeight = nEnforcementHeight;
      }
  
      void UpdateBudgetParameters(int nMasternodePaymentsStartBlock, int nBudgetPaymentsStartBlock, int nSuperblockStartBlock)
      {
          consensus.nMasternodePaymentsStartBlock = nMasternodePaymentsStartBlock;
          consensus.nBudgetPaymentsStartBlock = nBudgetPaymentsStartBlock;
          consensus.nSuperblockStartBlock = nSuperblockStartBlock;
      }
  };
  static CRegTestParams regTestParams;
  
  static CChainParams *pCurrentParams = 0;
  
  const CChainParams &Params() {
      assert(pCurrentParams);
      return *pCurrentParams;
  }
  
  CChainParams& Params(const std::string& chain)
  {
      if (chain == CBaseChainParams::MAIN)
              return mainParams;
      else if (chain == CBaseChainParams::TESTNET)
              return testNetParams;
      else if (chain == CBaseChainParams::DEVNET) {
              assert(devNetParams);
              return *devNetParams;
      } 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)
  {
      if (network == CBaseChainParams::DEVNET) {
          devNetParams = (CDevNetParams*)new uint8_t[sizeof(CDevNetParams)];
          memset(devNetParams, 0, sizeof(CDevNetParams));
          new (devNetParams) CDevNetParams();
      }
  
      SelectBaseParams(network);
      pCurrentParams = &Params(network);
  }
  
  void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int64_t nWindowSize, int64_t nThreshold)
  {
      regTestParams.UpdateBIP9Parameters(d, nStartTime, nTimeout, nWindowSize, nThreshold);
  }
  
  void UpdateRegtestDIP3Parameters(int nActivationHeight, int nEnforcementHeight)
  {
      regTestParams.UpdateDIP3Parameters(nActivationHeight, nEnforcementHeight);
  }
  
  void UpdateRegtestBudgetParameters(int nMasternodePaymentsStartBlock, int nBudgetPaymentsStartBlock, int nSuperblockStartBlock)
  {
      regTestParams.UpdateBudgetParameters(nMasternodePaymentsStartBlock, nBudgetPaymentsStartBlock, nSuperblockStartBlock);
  }
  
  void UpdateDevnetSubsidyAndDiffParams(int nMinimumDifficultyBlocks, int nHighSubsidyBlocks, int nHighSubsidyFactor)
  {
      assert(devNetParams);
      devNetParams->UpdateSubsidyAndDiffParams(nMinimumDifficultyBlocks, nHighSubsidyBlocks, nHighSubsidyFactor);
  }
  
  void UpdateDevnetLLMQChainLocks(Consensus::LLMQType llmqType)
  {
      assert(devNetParams);
      devNetParams->UpdateLLMQChainLocks(llmqType);
  }
  