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 = "Nintondo";
      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 = 100000;
          consensus.nMajorityEnforceBlockUpgrade = 1500;
          consensus.nMajorityRejectBlockOutdated = 1900;
          consensus.nMajorityWindow = 2000;
          // BIP34 is never enforced in Dogecoin v2 blocks, so we enforce from v3
          consensus.BIP34Height = 1034383;
          consensus.BIP34Hash = uint256S("0x80d1364201e5df97e696c03bdd24dc885e8617b9de51e453c10a4f629b1e797a");
          // consensus.BIP65Height = 1032483; // Not enabled in Doge yet
          consensus.BIP66Height = 1034383; // 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.nPowTargetTimespan = 4 * 60 * 60; // pre-digishield: 4 hours
          consensus.nPowTargetSpacing = 60; // 1 minute
          consensus.fDigishieldDifficultyCalculation = false;
          consensus.nCoinbaseMaturity = 30;
          consensus.fPowAllowMinDifficultyBlocks = false;
          consensus.fPowAllowDigishieldMinDifficultyBlocks = false;
          consensus.fPowNoRetargeting = false;
          consensus.nRuleChangeActivationThreshold = 9576; // 95% of 10,080
          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 Dogecoin values
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
          consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 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 = 1479168000; // November 15th, 2016.
          consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 0; // Disabled
  
          // The best chain should have at least this much work.
          consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000141a39e783aad4f660f");
  
          // By default assume that the signatures in ancestors of this block are valid.
          consensus.defaultAssumeValid = uint256S("0x77e3f4a4bcb4a2c15e8015525e3d15b466f6c022f6ca82698f329edef7d9777e"); // 2,510,150
  
          // AuxPoW parameters
          consensus.nAuxpowChainId = 0x0062; // 98 - Josh Wise!
          consensus.fStrictChainId = true;
          consensus.fAllowLegacyBlocks = true;
          consensus.nHeightEffective = 0;
  
          // Blocks 145000 - 371336 are Digishield without AuxPoW
          digishieldConsensus = consensus;
          digishieldConsensus.nHeightEffective = 145000;
          digishieldConsensus.fSimplifiedRewards = true;
          digishieldConsensus.fDigishieldDifficultyCalculation = true;
          digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute
          digishieldConsensus.nCoinbaseMaturity = 240;
  
          // Blocks 371337+ are AuxPoW
          auxpowConsensus = digishieldConsensus;
          auxpowConsensus.nHeightEffective = 371337;
          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] = 0xc0;
          pchMessageStart[1] = 0xc0;
          pchMessageStart[2] = 0xc0;
          pchMessageStart[3] = 0xc0;
          vAlertPubKey = ParseHex("04d4da7a5dae4db797d9b0644d57a5cd50e05a70f36091cd62e2fc41c98ded06340be5a43a35e185690cd9cde5d72da8f6d065b499b06f51dcfba14aad859f443a");
          nDefaultPort = 22556;
          nPruneAfterHeight = 100000;
  
          genesis = CreateGenesisBlock(1386325540, 99943, 0x1e0ffff0, 1, 88 * COIN);
  
          consensus.hashGenesisBlock = genesis.GetHash();
          digishieldConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          auxpowConsensus.hashGenesisBlock = consensus.hashGenesisBlock;
          assert(consensus.hashGenesisBlock == uint256S("0x1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"));
          assert(genesis.hashMerkleRoot == uint256S("0x5b2a3f53f605d62c53e62932dac6925e3d74afa5a4b459745c36d42d0ed26a69"));
  
          // Note that of those with the service bits flag, most only support a subset of possible options
          vSeeds.push_back(CDNSSeedData("multidoge.org", "seed.multidoge.org", true));
          vSeeds.push_back(CDNSSeedData("multidoge.org", "seed2.multidoge.org"));
  
          base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,30);
          base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,22);
          base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,158);
          base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x02)(0xfa)(0xca)(0xfd).convert_to_container<std::vector<unsigned char> >();
          base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x02)(0xfa)(0xc3)(0x98).convert_to_container<std::vector<unsigned char> >();
  
          //TODO: fix this for dogecoin -- plddr
          //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("0x1a91e3dace36e2be3bf030a65679fe821aa1d6ef92e7c9902eb318182c355691"))
              ( 104679, uint256S("0x35eb87ae90d44b98898fec8c39577b76cb1eb08e1261cfc10706c8ce9a1d01cf"))
              ( 145000, uint256S("0xcc47cae70d7c5c92828d3214a266331dde59087d4a39071fa76ddfff9b7bde72"))
              ( 371337, uint256S("0x60323982f9c5ff1b5a954eac9dc1269352835f47c2c5222691d80f0d50dcf053"))
              ( 450000, uint256S("0xd279277f8f846a224d776450aa04da3cf978991a182c6f3075db4c48b173bbd7"))
              ( 771275, uint256S("0x1b7d789ed82cbdc640952e7e7a54966c6488a32eaad54fc39dff83f310dbaaed"))
              ( 1000000, uint256S("0x6aae55bea74235f0c80bd066349d4440c31f2d0f27d54265ecd484d8c1d11b47"))
              ( 1250000, uint256S("0x00c7a442055c1a990e11eea5371ca5c1c02a0677b33cc88ec728c45edc4ec060"))
              ( 1500000, uint256S("0xf1d32d6920de7b617d51e74bdf4e58adccaa582ffdc8657464454f16a952fca6"))
              ( 1750000, uint256S("0x5c8e7327984f0d6f59447d89d143e5f6eafc524c82ad95d176c5cec082ae2001"))
              ( 2000000, uint256S("0x9914f0e82e39bbf21950792e8816620d71b9965bdbbc14e72a95e3ab9618fea8"))
              ( 2031142, uint256S("0x893297d89afb7599a3c571ca31a3b80e8353f4cf39872400ad0f57d26c4c5d42"))
              ( 2510150, uint256S("0x77e3f4a4bcb4a2c15e8015525e3d15b466f6c022f6ca82698f329edef7d9777e"))
          };
  
          chainTxData = ChainTxData{
              // Data as of block 77e3f4a4bcb4a2c15e8015525e3d15b466f6c022f6ca82698f329edef7d9777e (height 2510150).
              // Tx estimate based on average of year 2018 (~27k transactions per day)
              1544484077, // * UNIX timestamp of last checkpoint block
              42797508,   // * 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 Dogecoin 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 Dogecoin 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 = 0x0062; // 98 - Josh Wise!
          consensus.fStrictChainId = false;
          consensus.nHeightEffective = 0;
          consensus.fAllowLegacyBlocks = true;
  
          // Blocks 145000 - 157499 are Digishield without minimum difficulty on all blocks
          digishieldConsensus = consensus;
          digishieldConsensus.nHeightEffective = 145000;
          digishieldConsensus.nPowTargetTimespan = 60; // post-digishield: 1 minute
          digishieldConsensus.fDigishieldDifficultyCalculation = true;
          digishieldConsensus.fSimplifiedRewards = true;
          digishieldConsensus.fPowAllowMinDifficultyBlocks = false;
          digishieldConsensus.nCoinbaseMaturity = 240;
  
          // Blocks 157500 - 158099 are Digishield with minimum difficulty on all blocks
          minDifficultyConsensus = digishieldConsensus;
          minDifficultyConsensus.nHeightEffective = 157500;
          minDifficultyConsensus.fPowAllowDigishieldMinDifficultyBlocks = true;
          minDifficultyConsensus.fPowAllowMinDifficultyBlocks = true;
  
          // Enable AuxPoW at 158100
          auxpowConsensus = minDifficultyConsensus;
          auxpowConsensus.nHeightEffective = 158100;
          auxpowConsensus.fPowAllowDigishieldMinDifficultyBlocks = true;
          auxpowConsensus.fAllowLegacyBlocks = false;
  
          // Assemble the binary search tree of parameters
          pConsensusRoot = &digishieldConsensus;
          digishieldConsensus.pLeft = &consensus;
          digishieldConsensus.pRight = &minDifficultyConsensus;
          minDifficultyConsensus.pRight = &auxpowConsensus;
  
          pchMessageStart[0] = 0xfc;
          pchMessageStart[1] = 0xc1;
          pchMessageStart[2] = 0xb7;
          pchMessageStart[3] = 0xdc;
          vAlertPubKey = ParseHex("042756726da3c7ef515d89212ee1705023d14be389e25fe15611585661b9a20021908b2b80a3c7200a0139dd2b26946606aab0eef9aa7689a6dc2c7eee237fa834");
          nDefaultPort = 44556;
          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 dogecoin -- 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;
  
          // Dogecoin 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 = 18444;
          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);
  }
  