chainparams.cpp

// Copyright (c) 2010 Satoshi Nakamoto
// Copyright (c) 2009-2017 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 <memory>

#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=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
 *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
 *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
 *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
 *   vMerkleTree: 4a5e1e
 */
static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
{
    const char* pszTimestamp = "La tercera, 11/09/2017: EE.UU. y Corea del Norte alarman al mundo";
    const CScript genesisOutputScript = CScript() << ParseHex("040184710fa689ad5023690c80f3a49c8f13f8d45b8c857fbcbc8bc4a8e4d3eb4b10f4d4604fa08dce601aaf0f470216fe1b51850b4acf21b179c45070ac7b03a9") << OP_CHECKSIG;
    return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
}

void CChainParams::UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
{
    consensus.vDeployments[d].nStartTime = nStartTime;
    consensus.vDeployments[d].nTimeout = nTimeout;
}

/**
 * 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 = 2628000;
        consensus.BIP16Height = 0;
        consensus.BIP34Height = 0;
        consensus.BIP34Hash = uint256S("6e27bffd2a104bea1c870be76aab1cce13bebb0db40606773827517da9528174");
        consensus.BIP65Height = 0; 
        consensus.BIP66Height = 0;
        consensus.powLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); 
        consensus.nPowTargetTimespan = 30 * 60; // 3.5 days
        consensus.nPowTargetSpacing = 1 * 60;
        consensus.fPowAllowMinDifficultyBlocks = false;
        consensus.fPowNoRetargeting = false;
        consensus.nRuleChangeActivationThreshold = 6048; // 75% of 8064
        consensus.nMinerConfirmationWindow = 8064; // nPowTargetTimespan / nPowTargetSpacing * 4
        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 = 2;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0; // January 28, 2017
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 0; // January 31st, 2018
        
        /** DarkGravityWell v3 Fork Params - Humwerthuz @ 30/12/2017 **/
        consensus.nPowDGWHeight = 147000; //DGW on starting from block 147.000

        // Propuestas de Mejora para Chaucha (PMC)
        consensus.PMC1 = 220000;
        consensus.PMC2 = 1000000;  // 1 millon mientras se decide


        // The best chain should have at least this much work.
        consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000003f646daaf5be6b64");

        // By default assume that the signatures in ancestors of this block are valid.
        consensus.defaultAssumeValid = uint256S("0x86b223e8e49f05d16ce5ef9b12b2b4f5a09926f6ad2dbf97f8965830d1b45312"); //600,000

        /**
         * 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] = 0xaa;
        pchMessageStart[1] = 0xa2;
        pchMessageStart[2] = 0x26;
        pchMessageStart[3] = 0xa9;
        nDefaultPort = 21663;
        nPruneAfterHeight = 100000;

        genesis = CreateGenesisBlock(1502438055, 638445, 0x1e0ffff0, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x6e27bffd2a104bea1c870be76aab1cce13bebb0db40606773827517da9528174"));
        assert(genesis.hashMerkleRoot == uint256S("0x1b54ad13e84ece043533beb59d6b666047ffc77a4496034a101791601d711998"));

        // Note that of those with the service bits flag, most only support a subset of possible options
        vSeeds.emplace_back("condor420.chaucha.cl"); // Por la razon
        vSeeds.emplace_back("huemul69.chaucha.cl");// O la fuerza

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,88);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
        base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,50);
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,216);
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};

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

        fDefaultConsistencyChecks = false;
        fRequireStandard = true;
        fMineBlocksOnDemand = false;

        checkpointData = {
            {
            {      0, uint256S("0x6e27bffd2a104bea1c870be76aab1cce13bebb0db40606773827517da9528174")}, //GENESIS
            {      1, uint256S("0xeadcbcb3f8960778b1c39415d1447a5cb45981ac15b269e31924f5f4701ea0e8")}, //PREMINE
            {   2833, uint256S("0xe281b0a49fd63613fd9ceffc758cd2044f72278cc9606fc7c7f86422d977e44f")}, //POOL
            {  50000, uint256S("0x1f676ba037561706283a5cdac53d20c4d81576faffb4940ea3f0ddaa3a91f04b")}, //BLOCK 50.000
            {  80000, uint256S("0x36813083a53ef7dc73037a92b245fbdced69f091bb8549da520331f159fdbf6b")}, //BLOCK 80.000
            { 144875, uint256S("0xbb0eb7a10ba79bfa10a15e59c3cca0963087a349a2063266b2dc91997ef9d192")}, //BLOCK 144.875 PRE-RELEASE CHAUCHERA 2.0
            { 220000, uint256S("0x00a2c535a27da237b60a50db41a9309b9c7afd06bfcb948aed2d06c2e3241aec")}, // PMC 1
            { 300000, uint256S("0xeeea1dcbe84fc64a0ec1cddf8fa3e403e10fdc77c202233342091f2af7c44646")}, // BLOCK 300.000
            { 327000, uint256S("0xb4eb1c952656e75eaa93e1033f4e675f083196cc90a14ca63e865164debb8dd4")}, // OP_HODL TESTING
            { 400000, uint256S("0xa754fc389835d8e375cb9fb22a8d3b852c376e2d4ec7b978e08761faf9814d18")}, // BLOCK 400.000
            { 500000, uint256S("0xcd01a0a68e367cf7dd33598c58ba81b7e0ef4c938e313a3fbfff2db3df4e3e71")}, // BLOCK 500.000
            { 600000, uint256S("0x86b223e8e49f05d16ce5ef9b12b2b4f5a09926f6ad2dbf97f8965830d1b45312")}, // BLOCK 600.000
            { 793000, uint256S("0x88f8e2a81dff68682df62d50388bf5b700255669ad81ef9b05a6ba7bcf6bd121")}, // BLOCK 793.000 PRE-RELEASE CHAUCHERA 3.0

            }
        };

        chainTxData = ChainTxData{
            1558030232, // * UNIX timestamp of last checkpoint block
            881324,   // * total number of transactions between genesis and last checkpoint
            //   (the tx=... number in the SetBestChain debug.log lines)
            1440.0 // * estimated number of transactions per day after checkpoint
        };
    }
};

/**
 * Testnet (v4)
 */
class CTestNetParams : public CChainParams {
public:
    CTestNetParams() {
        strNetworkID = "test";
        consensus.nSubsidyHalvingInterval = 250;
        consensus.BIP16Height = 0; // always enforce P2SH BIP16 on regtest
        consensus.BIP34Height = 0;
        consensus.BIP34Hash = uint256S("f0a673496ca33e8d84df16f2ad99eba0732ee41971658be4d927f30c8f27aa65");
        consensus.BIP65Height = 0;
        consensus.BIP66Height = 0;
        consensus.powLimit = uint256S("00000fffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        consensus.nPowTargetTimespan = 30 * 60; // 3.5 days
        consensus.nPowTargetSpacing = 1 * 60;
        consensus.fPowAllowMinDifficultyBlocks = true;
        consensus.fPowNoRetargeting = false;
        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 = 2;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0; // January 1, 2017
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 0; // January 31st, 2018

        // The best chain should have at least this much work.
        consensus.nMinimumChainWork = uint256S("");

        // By default assume that the signatures in ancestors of this block are valid.
        consensus.defaultAssumeValid = uint256S("0x1efb29c8187d5a496a33377941d1df415169c3ce5d8c05d055f25b683ec3f9a3"); //612653

        /** DarkGravityWell v3 Fork Params - Humwerthuz @ 30/12/2017 **/
        consensus.nPowDGWHeight = 200; //DGW always on

        // Propuestas de Mejora para Chaucha (PMC)
        consensus.PMC1 = 235;
        consensus.PMC2 = 500;

        pchMessageStart[0] = 0xfc;
        pchMessageStart[1] = 0xd1;
        pchMessageStart[2] = 0xb7;
        pchMessageStart[3] = 0xdc;
        nDefaultPort = 19335;
        nPruneAfterHeight = 100000;

        genesis = CreateGenesisBlock(1514919398, 304091, 0x1e0ffff0, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0xf0a673496ca33e8d84df16f2ad99eba0732ee41971658be4d927f30c8f27aa65"));
        assert(genesis.hashMerkleRoot == uint256S("0x1b54ad13e84ece043533beb59d6b666047ffc77a4496034a101791601d711998"));

        vFixedSeeds.clear();
        vSeeds.clear();
        // nodes with support for servicebits filtering should be at the top
        vSeeds.emplace_back("fn1.cha.harc.cl");
        vSeeds.emplace_back("fn2.cha.harc.cl");

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,65);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
        base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,58);
        base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};

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

        fDefaultConsistencyChecks = false;
        fRequireStandard = false;
        fMineBlocksOnDemand = false;

        checkpointData = (CCheckpointData) {
            {
                {0, consensus.hashGenesisBlock},
            }
        };

        chainTxData = ChainTxData{
            // Data as of block a0afbded94d4be233e191525dc2d467af5c7eab3143c852c3cd549831022aad6 (height 343833)
            0,
            0,
            0
        };

    }
};

/**
 * Regression test
 */
class CRegTestParams : public CChainParams {
public:
    CRegTestParams() {
        strNetworkID = "regtest";
        consensus.nSubsidyHalvingInterval = 200;
        consensus.BIP16Height = 0; // always enforce P2SH BIP16 on regtest
        consensus.BIP34Height = 0; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
        consensus.BIP34Hash = uint256();
        consensus.BIP65Height = 0; // BIP65 activated on regtest (Used in rpc activation tests)
        consensus.BIP66Height = 0; // BIP66 activated on regtest (Used in rpc activation tests)
        consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
        consensus.nPowTargetTimespan = 30 * 60; // two weeks
        consensus.nPowTargetSpacing = 1 * 60;
        consensus.fPowAllowMinDifficultyBlocks = true;
        consensus.fPowNoRetargeting = true;
        consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
        consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
        consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 0;

        // 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");

        /** DarkGravityWell v3 Fork Params - Humwerthuz @ 30/12/2017 **/
        consensus.nPowDGWHeight = 0; //DGW always on

        // Propuestas de Mejora para Chaucha (PMC)
        consensus.PMC1 = 1; // 1.5 CHA
        consensus.PMC2 = 20;

        pchMessageStart[0] = 0xfa;
        pchMessageStart[1] = 0xbf;
        pchMessageStart[2] = 0xb5;
        pchMessageStart[3] = 0xda;
        nDefaultPort = 19444;
        nPruneAfterHeight = 1000;

        genesis = CreateGenesisBlock(1530840480, 3462792, 0x1e0ffff0, 1, 50 * COIN);
        consensus.hashGenesisBlock = genesis.GetHash();
        assert(consensus.hashGenesisBlock == uint256S("0x75d057806094af24532e9489f8ced2f935a658c42e074963ee984e09e51a8a45"));
        assert(genesis.hashMerkleRoot == uint256S("0x1b54ad13e84ece043533beb59d6b666047ffc77a4496034a101791601d711998"));
        
        vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
        vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.

        fDefaultConsistencyChecks = true;
        fRequireStandard = false;
        fMineBlocksOnDemand = true; 

        checkpointData = {
            {
                {0, consensus.hashGenesisBlock},
            }
        };

        chainTxData = ChainTxData{
            0,
            0,
            0
        };

        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,28);
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,35);
        base58Prefixes[SCRIPT_ADDRESS2] = std::vector<unsigned char>(1,40);
        base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
    }
};

static std::unique_ptr<CChainParams> globalChainParams;

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

std::unique_ptr<CChainParams> CreateChainParams(const std::string& chain)
{
    if (chain == CBaseChainParams::MAIN)
        return std::unique_ptr<CChainParams>(new CMainParams());
    else if (chain == CBaseChainParams::TESTNET)
        return std::unique_ptr<CChainParams>(new CTestNetParams());
    else if (chain == CBaseChainParams::REGTEST)
        return std::unique_ptr<CChainParams>(new CRegTestParams());
    throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
}

void SelectParams(const std::string& network)
{
    SelectBaseParams(network);
    globalChainParams = CreateChainParams(network);
}

void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
{
    globalChainParams->UpdateVersionBitsParameters(d, nStartTime, nTimeout);
}