hush/src/chainparams.cpp

// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2014 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 "main.h"
#include "crypto/equihash.h"

#include "util.h"
#include "utilstrencodings.h"

#include <assert.h>

#include <boost/assign/list_of.hpp>

#include "base58.h"

using namespace std;

#include "chainparamsseeds.h"

/**
 * 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
 */

const arith_uint256 maxUint = UintToArith256(uint256S("ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"));

class CMainParams : public CChainParams {
public:
    CMainParams() {
        strNetworkID = "main";
        strCurrencyUnits = "ZEC";
        consensus.fCoinbaseMustBeProtected = true;
        consensus.nSubsidySlowStartInterval = 2;
        consensus.nSubsidyHalvingInterval = 840000;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 4000;
        consensus.powLimit = uint256S("0007fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        consensus.nPowAveragingWindow = 17;
        //assert(maxUint/UintToArith256(consensus.powLimit) >= consensus.nPowAveragingWindow);
        consensus.nPowMaxAdjustDown = 32; // 32% adjustment down
        consensus.nPowMaxAdjustUp = 16; // 16% adjustment up
        consensus.nPowTargetSpacing = 2.5 * 60;
        consensus.fPowAllowMinDifficultyBlocks = false;
        /**
         * The message start string should be awesome! ⓩ❤
         */
        pchMessageStart[0] = 0x24;
        pchMessageStart[1] = 0xe9;
        pchMessageStart[2] = 0x27;
        pchMessageStart[3] = 0x64;
        vAlertPubKey = ParseHex("0411ef848a72e48fb2d8216c6698a030dedbef16ac6cd9d739a7b4e346735a8edf252223bac64093f49616050df642c61ae5b5e2bd3654d7dde05a5e296f79950b");
        nDefaultPort = 8888;
        nMinerThreads = 0;
        nMaxTipAge = 24 * 60 * 60;
        nPruneAfterHeight = 100000;
        const size_t N = 200, K = 9;
        BOOST_STATIC_ASSERT(equihash_parameters_acceptable(N, K));
        nEquihashN = N;
        nEquihashK = K;

        /**
         * Build the genesis block. Note that the output of its generation
         * transaction cannot be spent since it did not originally exist in the
         * database (and is in any case of zero value).
         *
         * >>> from pyblake2 import blake2s
         * >>> 'Zcash' + blake2s(b'The Economist 2016-10-29 Known unknown: Another crypto-currency is born. BTC#436254 0000000000000000044f321997f336d2908cf8c8d6893e88dbf067e2d949487d ETH#2521903 483039a6b6bd8bd05f0584f9a078d075e454925eb71c1f13eaff59b405a721bb DJIA close on 27 Oct 2016: 18,169.68').hexdigest()
         */
        const char* pszTimestamp = "Zdashe540ecf100001889836c7d491a2f44e6bc6076d59e5e317255946b71be3fc516";
        CMutableTransaction txNew;
        txNew.vin.resize(1);
        txNew.vout.resize(1);
        txNew.vin[0].scriptSig = CScript() << 520617983 << CScriptNum(4) << vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
        txNew.vout[0].nValue = 0;
        txNew.vout[0].scriptPubKey = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
        genesis.vtx.push_back(txNew);
        genesis.hashPrevBlock.SetNull();
        genesis.hashMerkleRoot = genesis.BuildMerkleTree();
        genesis.nVersion = 4;
        genesis.nTime    = 1477641360;
        genesis.nBits    = 0x1f07ffff;
        genesis.nNonce   = uint256S("0x0000000000000000000000000000000000000000000000000000000000001257");
        genesis.nSolution = ParseHex("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");

        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x"+consensus.hashGenesisBlock.ToString()));
        assert(genesis.hashMerkleRoot == uint256S("0x"+genesis.hashMerkleRoot.ToString()));

        vFixedSeeds.clear();
        vSeeds.clear();
        vSeeds.push_back(CDNSSeedData("zdash.tk", "142.4.212.68")); // Zcash
        //vSeeds.push_back(CDNSSeedData("str4d.xyz", "dnsseed.str4d.xyz")); // @str4d
        //vSeeds.push_back(CDNSSeedData("znodes.org", "dnsseed.znodes.org")); // @bitcartel

        // guarantees the first 2 characters, when base58 encoded, are "t1"
        base58Prefixes[PUBKEY_ADDRESS]     = {0x1C,0xB8};
        // guarantees the first 2 characters, when base58 encoded, are "t3"
        base58Prefixes[SCRIPT_ADDRESS]     = {0x1C,0xBD};
        // the first character, when base58 encoded, is "5" or "K" or "L" (as in Bitcoin)
        base58Prefixes[SECRET_KEY]         = {0x80};
        // do not rely on these BIP32 prefixes; they are not specified and may change
        base58Prefixes[EXT_PUBLIC_KEY]     = {0x04,0x88,0xB2,0x1E};
        base58Prefixes[EXT_SECRET_KEY]     = {0x04,0x88,0xAD,0xE4};
        // guarantees the first 2 characters, when base58 encoded, are "zc"
        base58Prefixes[ZCPAYMENT_ADDRRESS] = {0x16,0x9A};
        // guarantees the first 2 characters, when base58 encoded, are "SK"
        base58Prefixes[ZCSPENDING_KEY]     = {0xAB,0x36};

        vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));

        fRequireRPCPassword = true;
        fMiningRequiresPeers = true;
        fDefaultConsistencyChecks = false;
        fRequireStandard = true;
        fMineBlocksOnDemand = false;
        fTestnetToBeDeprecatedFieldRPC = false;

        checkpointData = (Checkpoints::CCheckpointData) {
            boost::assign::map_list_of
            ( 0, consensus.hashGenesisBlock),
            genesis.nTime, // * UNIX timestamp of last checkpoint block
            0,   // * total number of transactions between genesis and last checkpoint
                 //   (the tx=... number in the SetBestChain debug.log lines)
            0    // * estimated number of transactions per day after checkpoint
        };

        // Founders reward script expects a vector of 2-of-3 multisig addresses
        vFoundersRewardAddress = {
            "t3Vz22vK5z2LcKEdg16Yv4FFneEL1zg9ojd", /* main-index: 0*/
            "t3cL9AucCajm3HXDhb5jBnJK2vapVoXsop3", /* main-index: 1*/
            "t3fqvkzrrNaMcamkQMwAyHRjfDdM2xQvDTR", /* main-index: 2*/
            "t3TgZ9ZT2CTSK44AnUPi6qeNaHa2eC7pUyF", /* main-index: 3*/
            "t3SpkcPQPfuRYHsP5vz3Pv86PgKo5m9KVmx", /* main-index: 4*/
            "t3Xt4oQMRPagwbpQqkgAViQgtST4VoSWR6S", /* main-index: 5*/
            "t3ayBkZ4w6kKXynwoHZFUSSgXRKtogTXNgb", /* main-index: 6*/
            "t3adJBQuaa21u7NxbR8YMzp3km3TbSZ4MGB", /* main-index: 7*/
            "t3K4aLYagSSBySdrfAGGeUd5H9z5Qvz88t2", /* main-index: 8*/
            "t3RYnsc5nhEvKiva3ZPhfRSk7eyh1CrA6Rk", /* main-index: 9*/
            "t3Ut4KUq2ZSMTPNE67pBU5LqYCi2q36KpXQ", /* main-index: 10*/
            "t3ZnCNAvgu6CSyHm1vWtrx3aiN98dSAGpnD", /* main-index: 11*/
            "t3fB9cB3eSYim64BS9xfwAHQUKLgQQroBDG", /* main-index: 12*/
            "t3cwZfKNNj2vXMAHBQeewm6pXhKFdhk18kD", /* main-index: 13*/
            "t3YcoujXfspWy7rbNUsGKxFEWZqNstGpeG4", /* main-index: 14*/
            "t3bLvCLigc6rbNrUTS5NwkgyVrZcZumTRa4", /* main-index: 15*/
            "t3VvHWa7r3oy67YtU4LZKGCWa2J6eGHvShi", /* main-index: 16*/
            "t3eF9X6X2dSo7MCvTjfZEzwWrVzquxRLNeY", /* main-index: 17*/
            "t3esCNwwmcyc8i9qQfyTbYhTqmYXZ9AwK3X", /* main-index: 18*/
            "t3M4jN7hYE2e27yLsuQPPjuVek81WV3VbBj", /* main-index: 19*/
            "t3gGWxdC67CYNoBbPjNvrrWLAWxPqZLxrVY", /* main-index: 20*/
            "t3LTWeoxeWPbmdkUD3NWBquk4WkazhFBmvU", /* main-index: 21*/
            "t3P5KKX97gXYFSaSjJPiruQEX84yF5z3Tjq", /* main-index: 22*/
            "t3f3T3nCWsEpzmD35VK62JgQfFig74dV8C9", /* main-index: 23*/
            "t3Rqonuzz7afkF7156ZA4vi4iimRSEn41hj", /* main-index: 24*/
            "t3fJZ5jYsyxDtvNrWBeoMbvJaQCj4JJgbgX", /* main-index: 25*/
            "t3Pnbg7XjP7FGPBUuz75H65aczphHgkpoJW", /* main-index: 26*/
            "t3WeKQDxCijL5X7rwFem1MTL9ZwVJkUFhpF", /* main-index: 27*/
            "t3Y9FNi26J7UtAUC4moaETLbMo8KS1Be6ME", /* main-index: 28*/
            "t3aNRLLsL2y8xcjPheZZwFy3Pcv7CsTwBec", /* main-index: 29*/
            "t3gQDEavk5VzAAHK8TrQu2BWDLxEiF1unBm", /* main-index: 30*/
            "t3Rbykhx1TUFrgXrmBYrAJe2STxRKFL7G9r", /* main-index: 31*/
            "t3aaW4aTdP7a8d1VTE1Bod2yhbeggHgMajR", /* main-index: 32*/
            "t3YEiAa6uEjXwFL2v5ztU1fn3yKgzMQqNyo", /* main-index: 33*/
            "t3g1yUUwt2PbmDvMDevTCPWUcbDatL2iQGP", /* main-index: 34*/
            "t3dPWnep6YqGPuY1CecgbeZrY9iUwH8Yd4z", /* main-index: 35*/
            "t3QRZXHDPh2hwU46iQs2776kRuuWfwFp4dV", /* main-index: 36*/
            "t3enhACRxi1ZD7e8ePomVGKn7wp7N9fFJ3r", /* main-index: 37*/
            "t3PkLgT71TnF112nSwBToXsD77yNbx2gJJY", /* main-index: 38*/
            "t3LQtHUDoe7ZhhvddRv4vnaoNAhCr2f4oFN", /* main-index: 39*/
            "t3fNcdBUbycvbCtsD2n9q3LuxG7jVPvFB8L", /* main-index: 40*/
            "t3dKojUU2EMjs28nHV84TvkVEUDu1M1FaEx", /* main-index: 41*/
            "t3aKH6NiWN1ofGd8c19rZiqgYpkJ3n679ME", /* main-index: 42*/
            "t3MEXDF9Wsi63KwpPuQdD6by32Mw2bNTbEa", /* main-index: 43*/
            "t3WDhPfik343yNmPTqtkZAoQZeqA83K7Y3f", /* main-index: 44*/
            "t3PSn5TbMMAEw7Eu36DYctFezRzpX1hzf3M", /* main-index: 45*/
            "t3R3Y5vnBLrEn8L6wFjPjBLnxSUQsKnmFpv", /* main-index: 46*/
            "t3Pcm737EsVkGTbhsu2NekKtJeG92mvYyoN", /* main-index: 47*/
//            "t3PZ9PPcLzgL57XRSG5ND4WNBC9UTFb8DXv", /* main-index: 48*/
//            "t3L1WgcyQ95vtpSgjHfgANHyVYvffJZ9iGb", /* main-index: 49*/
//            "t3JtoXqsv3FuS7SznYCd5pZJGU9di15mdd7", /* main-index: 50*/
//            "t3hLJHrHs3ytDgExxr1mD8DYSrk1TowGV25", /* main-index: 51*/
//            "t3fmYHU2DnVaQgPhDs6TMFVmyC3qbWEWgXN", /* main-index: 52*/
//            "t3T4WmAp6nrLkJ24iPpGeCe1fSWTPv47ASG", /* main-index: 53*/
//            "t3fP6GrDM4QVwdjFhmCxGNbe7jXXXSDQ5dv", /* main-index: 54*/
};
        assert(vFoundersRewardAddress.size() <= consensus.GetLastFoundersRewardBlockHeight());
    }
};
static CMainParams mainParams;

/**
 * Testnet (v3)
 */
class CTestNetParams : public CMainParams {
public:
    CTestNetParams() {
        strNetworkID = "test";
        strCurrencyUnits = "TAZ";
        consensus.nMajorityEnforceBlockUpgrade = 51;
        consensus.nMajorityRejectBlockOutdated = 75;
        consensus.nMajorityWindow = 400;
        consensus.powLimit = uint256S("07ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        assert(maxUint/UintToArith256(consensus.powLimit) >= consensus.nPowAveragingWindow);
        consensus.fPowAllowMinDifficultyBlocks = true;
        pchMessageStart[0] = 0xfa;
        pchMessageStart[1] = 0x1a;
        pchMessageStart[2] = 0xf9;
        pchMessageStart[3] = 0xbf;
        vAlertPubKey = ParseHex("040c2275ef276b57c646edd5d4441b911c6b166596b0ee853e67842c580b9ed14dab42c7db0985afa1454f9480004e9597178ad4c51d54069bc1013909818a7b81");
        nDefaultPort = 18888;
        nMinerThreads = 0;
        nPruneAfterHeight = 1000;

        //! Modify the testnet genesis block so the timestamp is valid for a later start.
        genesis.nTime = 1477648033;
        genesis.nBits = 0x2007ffff;
        genesis.nNonce = uint256S("0x0000000000000000000000000000000000000000000000000000000000000006");
        genesis.nSolution = ParseHex("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");
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x" + consensus.hashGenesisBlock.ToString()));

        vFixedSeeds.clear();
        vSeeds.clear();
        vSeeds.push_back(CDNSSeedData("z.cash", "dnsseed.testnet.z.cash")); // Zcash

        // guarantees the first 2 characters, when base58 encoded, are "tm"
        base58Prefixes[PUBKEY_ADDRESS]     = {0x1D,0x25};
        // guarantees the first 2 characters, when base58 encoded, are "t2"
        base58Prefixes[SCRIPT_ADDRESS]     = {0x1C,0xBA};
        // the first character, when base58 encoded, is "9" or "c" (as in Bitcoin)
        base58Prefixes[SECRET_KEY]         = {0xEF};
        // do not rely on these BIP32 prefixes; they are not specified and may change
        base58Prefixes[EXT_PUBLIC_KEY]     = {0x04,0x35,0x87,0xCF};
        base58Prefixes[EXT_SECRET_KEY]     = {0x04,0x35,0x83,0x94};
        // guarantees the first 2 characters, when base58 encoded, are "zt"
        base58Prefixes[ZCPAYMENT_ADDRRESS] = {0x16,0xB6};
        // guarantees the first 2 characters, when base58 encoded, are "ST"
        base58Prefixes[ZCSPENDING_KEY]     = {0xAC,0x08};

        vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));

        fRequireRPCPassword = true;
        fMiningRequiresPeers = true;
        fDefaultConsistencyChecks = false;
        fRequireStandard = true;
        fMineBlocksOnDemand = false;
        fTestnetToBeDeprecatedFieldRPC = true;

        checkpointData = (Checkpoints::CCheckpointData) {
            boost::assign::map_list_of
            ( 0, consensus.hashGenesisBlock),
            genesis.nTime,
            0,
            0
        };

        // Founders reward script expects a vector of 2-of-3 multisig addresses
        vFoundersRewardAddress = {
            "t2UNzUUx8mWBCRYPRezvA363EYXyEpHokyi", "t2N9PH9Wk9xjqYg9iin1Ua3aekJqfAtE543", "t2NGQjYMQhFndDHguvUw4wZdNdsssA6K7x2", "t27ktmq1kbeCWiQ5TZ7w5npSzcdbBmTB7v6",
            "t2GcBttAKD2WTHka8HyGc2dfvVTKYZUfHmJ", "t2Q3vxWaD9LrdqUE8Xd9Ddjpr9pUQ2aGotK", "t2TTfWDsYu998fHWzVP9Gns4fgxXXRi1Wzu", "t2KS6R4MMWdSBMjLCiw2iMyhWGRQPmyRqDn",
            "t2Q2ELrgotWv3Eec6LEtMMiiQ8dtW38u8Tj", "t2AEgJA88vTWAKqxJDFUEJWyHUtQAZi5G1D", "t2HCSdmpq1TQKksuwPQevwAzPTgfJ2rkMbG", "t2HQCPFAUQaUdJWHPhg5pPBxit7inaJzubE",
            "t2Fzqvq8Y9e6Mn3JNPb982aYsLmq4b5HmhH", "t2HEz7YZQqDUgC5h4y2WSD3mWneqJNVRjjJ", "t2GCR1SCk687Eeo5NEZ23MLsms7JjVWBgfG", "t2KyiPR9Lztq2w1w747X6W4nkUMAGL8M9KN",
            "t2UxymadyxSyVihmbq7S1yxw5dCBqJ1S4jT", "t2AVeMy7fdmTcJhckqiKRG8B7F1vccEhSqU", "t26m7LwihQzD2sH7ZVhYpPJM5j7kzwbfKW9", "t2DgwUNTe7NxuyPU6fxsB5xJXap3E4yWXrN",
            "t2U6funcXA11fC9SZehyvUL3rk3Vhuh7fzS", "t284JhyS8LGM72Tx1porSqwrcq3CejthP1p", "t29egu8QcpzKeLoPLqWS6QVMnUUPQdF6eNm", "t29LqD9p9D3B26euBwFi6mfcWu8HPA38VNs",
            "t28GsAMCxAyLy85XaasddDzaYFTtfewr86y", "t2GV44QyaikQPLUfm6oTfZnw71LLjnR7gDG", "t2U2QzNLQ1jtAu4L6xxVnRXLBsQpQvGRR2g", "t2QKGr5PNan7nrwDgseyHMN9NFeeuUjCh8b",
            "t2AfS8u6HwBeJpKpbuxztvRjupKQDXqnrwa", "t2CTRQUViQd3CWMhnKhFnUHqDLUyTxmWhJs", "t2CbM9EqszNURqh1UXZBXYhwp1R4GwEhWRE", "t2LM7uYiAsKDU42GNSnMwDxbZ8s1DowQzYH",
            "t2AgvT35LHR378AE3ouz6xKMhkTLHLJC6nD", "t285EAQXUVyi4NMddJv2QqTrnv45GRMbP8e", "t2EpMRCD5b8f2DCQ37npNULcpZhkjC8muqA", "t2BCmWXrRPiCeQTpizSWKKRPM5X6PS7umDY",
            "t2DN7X6wDFn5hYKBiBmn3Z98st419yaTVTH", "t2QJj8HeCwQ6mHwqekxxDLZntYpZTHNU62t", "t2QdHBR1Yciqn4j8gpS8DcQZZtYetKvfNj3", "t2E5cpLA1ey5VNxFNcuopeQMq2rH2NHiPdu",
            "t2EVRGtzjFAyz8CF8ndvLuiJu7qZUfDa93H", "t2KoQDk3BSFadBkuaWdLwchFuQamzw9RE4L", "t2FnR3yhTmuiejEJeu6qpidWTghRd1HpjLt", "t2BAuBAAospDc9d1u5nNGEi6x4NRJBD2PQ2",
            "t2RtKrLCGcyPkm4a4APg1YY9Wu2m4R2PgrB", "t28aUbSteZzBq2pFgj1K1XNZRZP5mMMyakV", "t2Urdy1ERfkvsFuy6Z4BkhvYGzWdmivfAFR", "t2ADinR4JrvCMd4Q1XGALPajzFrirqvhED6",
        };
        assert(vFoundersRewardAddress.size() <= consensus.GetLastFoundersRewardBlockHeight());
    }
};
static CTestNetParams testNetParams;

/**
 * Regression test
 */
class CRegTestParams : public CTestNetParams {
public:
    CRegTestParams() {
        strNetworkID = "regtest";
        strCurrencyUnits = "REG";
        consensus.fCoinbaseMustBeProtected = false;
        consensus.nSubsidySlowStartInterval = 0;
        consensus.nSubsidyHalvingInterval = 150;
        consensus.nMajorityEnforceBlockUpgrade = 750;
        consensus.nMajorityRejectBlockOutdated = 950;
        consensus.nMajorityWindow = 1000;
        consensus.powLimit = uint256S("0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f0f");
        assert(maxUint/UintToArith256(consensus.powLimit) >= consensus.nPowAveragingWindow);
        consensus.nPowMaxAdjustDown = 0; // Turn off adjustment down
        consensus.nPowMaxAdjustUp = 0; // Turn off adjustment up
        pchMessageStart[0] = 0xaa;
        pchMessageStart[1] = 0xe8;
        pchMessageStart[2] = 0x3f;
        pchMessageStart[3] = 0x5f;
        nMinerThreads = 1;
        nMaxTipAge = 24 * 60 * 60;
        const size_t N = 48, K = 5;
        BOOST_STATIC_ASSERT(equihash_parameters_acceptable(N, K));
        nEquihashN = N;
        nEquihashK = K;
        genesis.nTime = 1296688602;
        genesis.nBits = 0x200f0f0f;
        genesis.nNonce = uint256S("0x0000000000000000000000000000000000000000000000000000000000000009");
        genesis.nSolution = ParseHex("01936b7db1eb4ac39f151b8704642d0a8bda13ec547d54cd5e43ba142fc6d8877cab07b3");
        consensus.hashGenesisBlock = genesis.GetHash();
        nDefaultPort = 18444;
        assert(consensus.hashGenesisBlock == uint256S("0x" + consensus.hashGenesisBlock.ToString()));
        nPruneAfterHeight = 1000;

        vFixedSeeds.clear(); //! Regtest mode doesn't have any fixed seeds.
        vSeeds.clear();  //! Regtest mode doesn't have any DNS seeds.

        fRequireRPCPassword = false;
        fMiningRequiresPeers = false;
        fDefaultConsistencyChecks = true;
        fRequireStandard = false;
        fMineBlocksOnDemand = true;
        fTestnetToBeDeprecatedFieldRPC = false;

        checkpointData = (Checkpoints::CCheckpointData){
            boost::assign::map_list_of
            ( 0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")),
            0,
            0,
            0
        };

        // Founders reward script expects a vector of 2-of-3 multisig addresses
        vFoundersRewardAddress = { "t2FwcEhFdNXuFMv1tcYwaBJtYVtMj8b1uTg" };
        assert(vFoundersRewardAddress.size() <= consensus.GetLastFoundersRewardBlockHeight());
    }
};
static CRegTestParams regTestParams;

static CChainParams *pCurrentParams = 0;

const CChainParams &Params() {
    assert(pCurrentParams);
    return *pCurrentParams;
}

CChainParams &Params(CBaseChainParams::Network network) {
    switch (network) {
        case CBaseChainParams::MAIN:
            return mainParams;
        case CBaseChainParams::TESTNET:
            return testNetParams;
        case CBaseChainParams::REGTEST:
            return regTestParams;
        default:
            assert(false && "Unimplemented network");
            return mainParams;
    }
}

void SelectParams(CBaseChainParams::Network network) {
    SelectBaseParams(network);
    pCurrentParams = &Params(network);

    // Some python qa rpc tests need to enforce the coinbase consensus rule
    if (network == CBaseChainParams::REGTEST && mapArgs.count("-regtestprotectcoinbase")) {
        regTestParams.SetRegTestCoinbaseMustBeProtected();
    }
}

bool SelectParamsFromCommandLine()
{
    CBaseChainParams::Network network = NetworkIdFromCommandLine();
    if (network == CBaseChainParams::MAX_NETWORK_TYPES)
        return false;

    SelectParams(network);
    return true;
}


// Block height must be >0 and <=last founders reward block height
// Index variable i ranges from 0 - (vFoundersRewardAddress.size()-1)
std::string CChainParams::GetFoundersRewardAddressAtHeight(int nHeight) const {
    int maxHeight = consensus.GetLastFoundersRewardBlockHeight();
    assert(nHeight > 0 && nHeight <= maxHeight);

    size_t addressChangeInterval = (maxHeight + vFoundersRewardAddress.size()) / vFoundersRewardAddress.size();
    size_t i = nHeight / addressChangeInterval;
    return vFoundersRewardAddress[i];
}

// Block height must be >0 and <=last founders reward block height
// The founders reward address is expected to be a multisig (P2SH) address
CScript CChainParams::GetFoundersRewardScriptAtHeight(int nHeight) const {
    assert(nHeight > 0 && nHeight <= consensus.GetLastFoundersRewardBlockHeight());

    CBitcoinAddress address(GetFoundersRewardAddressAtHeight(nHeight).c_str());
    assert(address.IsValid());
    assert(address.IsScript());
    CScriptID scriptID = get<CScriptID>(address.Get()); // Get() returns a boost variant
    CScript script = CScript() << OP_HASH160 << ToByteVector(scriptID) << OP_EQUAL;
    return script;
}

std::string CChainParams::GetFoundersRewardAddressAtIndex(int i) const {
    assert(i >= 0 && i < vFoundersRewardAddress.size());
    return vFoundersRewardAddress[i];
}