src/chainparams.cpp

   1 // Copyright (c) 2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2015 The Bitcoin Core developers
   3 // Distributed under the MIT software license, see the accompanying
   4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   5
   6 #include "chainparams.h"
   7 #include "consensus/merkle.h"
   8
   9 #include "tinyformat.h"
  10 #include "util.h"
  11 #include "utilstrencodings.h"
  12
  13 #include <assert.h>
  14
  15 #include <boost/assign/list_of.hpp>
  16
  17 #include "chainparamsseeds.h"
  18
  19 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  20 {
  21     CMutableTransaction txNew;
  22     txNew.nVersion = 1;
  23     txNew.vin.resize(1);
  24     txNew.vout.resize(1);
  25     txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
  26     txNew.vout[0].nValue = genesisReward;
  27     txNew.vout[0].scriptPubKey = genesisOutputScript;
  28
  29     CBlock genesis;
  30     genesis.nTime    = nTime;
  31     genesis.nBits    = nBits;
  32     genesis.nNonce   = nNonce;
  33     genesis.nVersion = nVersion;
  34     genesis.vtx.push_back(txNew);
  35     genesis.hashPrevBlock.SetNull();
  36     genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
  37     return genesis;
  38 }
  39
  40 /**
  41  * Build the genesis block. Note that the output of its generation
  42  * transaction cannot be spent since it did not originally exist in the
  43  * database.
  44  *
  45  * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
  46  *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
  47  *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
  48  *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
  49  *   vMerkleTree: 4a5e1e
  50  */
  51 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  52 {
  53     const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
  54     const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
  55     return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
  56 }
  57
  58 /**
  59  * Main network
  60  */
  61 /**
  62  * What makes a good checkpoint block?
  63  * + Is surrounded by blocks with reasonable timestamps
  64  *   (no blocks before with a timestamp after, none after with
  65  *    timestamp before)
  66  * + Contains no strange transactions
  67  */
  68
  69 class CMainParams : public CChainParams {
  70 public:
  71     CMainParams() {
  72         strNetworkID = "main";
  73         consensus.nSubsidyHalvingInterval = 210000;
  74         consensus.nMajorityEnforceBlockUpgrade = 750;
  75         consensus.nMajorityRejectBlockOutdated = 950;
  76         consensus.nMajorityWindow = 1000;
  77         consensus.BIP34Height = 227931;
  78         consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
  79         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  80         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
  81         consensus.nPowTargetSpacing = 10 * 60;
  82         consensus.fPowAllowMinDifficultyBlocks = false;
  83         consensus.fPowNoRetargeting = false;
  84         consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
  85         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
  86         /**
  87          * The message start string is designed to be unlikely to occur in normal data.
  88          * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
  89          * a large 32-bit integer with any alignment.
  90          */
  91         pchMessageStart[0] = 0xf9;
  92         pchMessageStart[1] = 0xbe;
  93         pchMessageStart[2] = 0xb4;
  94         pchMessageStart[3] = 0xd9;
  95         vAlertPubKey = ParseHex("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284");
  96         nDefaultPort = 8333;
  97         nPruneAfterHeight = 100000;
  98
  99         genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
 100         consensus.hashGenesisBlock = genesis.GetHash();
 101         assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
 102         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 103
 104         vSeeds.push_back(CDNSSeedData("bitcoin.sipa.be", "seed.bitcoin.sipa.be")); // Pieter Wuille
 105         vSeeds.push_back(CDNSSeedData("bluematt.me", "dnsseed.bluematt.me")); // Matt Corallo
 106         vSeeds.push_back(CDNSSeedData("dashjr.org", "dnsseed.bitcoin.dashjr.org")); // Luke Dashjr
 107         vSeeds.push_back(CDNSSeedData("bitcoinstats.com", "seed.bitcoinstats.com")); // Christian Decker
 108         vSeeds.push_back(CDNSSeedData("xf2.org", "bitseed.xf2.org")); // Jeff Garzik
 109         vSeeds.push_back(CDNSSeedData("bitcoin.jonasschnelli.ch", "seed.bitcoin.jonasschnelli.ch")); // Jonas Schnelli
 110
 111         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
 112         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
 113         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
 114         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xB2)(0x1E).convert_to_container<std::vector<unsigned char> >();
 115         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();
 116
 117         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
 118
 119         fMiningRequiresPeers = true;
 120         fDefaultConsistencyChecks = false;
 121         fRequireStandard = true;
 122         fMineBlocksOnDemand = false;
 123         fTestnetToBeDeprecatedFieldRPC = false;
 124
 125         checkpointData = (CCheckpointData) {
 126             boost::assign::map_list_of
 127             ( 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
 128             ( 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
 129             ( 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
 130             (105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
 131             (134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
 132             (168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763"))
 133             (193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317"))
 134             (210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e"))
 135             (216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e"))
 136             (225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932"))
 137             (250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214"))
 138             (279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40"))
 139             (295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")),
 140             1397080064, // * UNIX timestamp of last checkpoint block
 141             36544669,   // * total number of transactions between genesis and last checkpoint
 142                         //   (the tx=... number in the SetBestChain debug.log lines)
 143             60000.0     // * estimated number of transactions per day after checkpoint
 144         };
 145     }
 146 };
 147 static CMainParams mainParams;
 148
 149 /**
 150  * Testnet (v3)
 151  */
 152 class CTestNetParams : public CChainParams {
 153 public:
 154     CTestNetParams() {
 155         strNetworkID = "test";
 156         consensus.nSubsidyHalvingInterval = 210000;
 157         consensus.nMajorityEnforceBlockUpgrade = 51;
 158         consensus.nMajorityRejectBlockOutdated = 75;
 159         consensus.nMajorityWindow = 100;
 160         consensus.BIP34Height = 21111;
 161         consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
 162         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 163         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
 164         consensus.nPowTargetSpacing = 10 * 60;
 165         consensus.fPowAllowMinDifficultyBlocks = true;
 166         consensus.fPowNoRetargeting = false;
 167         consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
 168         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
 169         pchMessageStart[0] = 0x0b;
 170         pchMessageStart[1] = 0x11;
 171         pchMessageStart[2] = 0x09;
 172         pchMessageStart[3] = 0x07;
 173         vAlertPubKey = ParseHex("04302390343f91cc401d56d68b123028bf52e5fca1939df127f63c6467cdf9c8e2c14b61104cf817d0b780da337893ecc4aaff1309e536162dabbdb45200ca2b0a");
 174         nDefaultPort = 18333;
 175         nPruneAfterHeight = 1000;
 176
 177         genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
 178         consensus.hashGenesisBlock = genesis.GetHash();
 179         assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
 180         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 181
 182         vFixedSeeds.clear();
 183         vSeeds.clear();
 184         vSeeds.push_back(CDNSSeedData("bitcoin.petertodd.org", "testnet-seed.bitcoin.petertodd.org"));
 185         vSeeds.push_back(CDNSSeedData("bluematt.me", "testnet-seed.bluematt.me"));
 186         vSeeds.push_back(CDNSSeedData("bitcoin.schildbach.de", "testnet-seed.bitcoin.schildbach.de"));
 187
 188         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
 189         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
 190         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
 191         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
 192         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
 193
 194         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
 195
 196         fMiningRequiresPeers = true;
 197         fDefaultConsistencyChecks = false;
 198         fRequireStandard = false;
 199         fMineBlocksOnDemand = false;
 200         fTestnetToBeDeprecatedFieldRPC = true;
 201
 202         checkpointData = (CCheckpointData) {
 203             boost::assign::map_list_of
 204             ( 546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")),
 205             1337966069,
 206             1488,
 207             300
 208         };
 209
 210     }
 211 };
 212 static CTestNetParams testNetParams;
 213
 214 /**
 215  * Regression test
 216  */
 217 class CRegTestParams : public CChainParams {
 218 public:
 219     CRegTestParams() {
 220         strNetworkID = "regtest";
 221         consensus.nSubsidyHalvingInterval = 150;
 222         consensus.nMajorityEnforceBlockUpgrade = 750;
 223         consensus.nMajorityRejectBlockOutdated = 950;
 224         consensus.nMajorityWindow = 1000;
 225         consensus.BIP34Height = -1; // BIP34 has not necessarily activated on regtest
 226         consensus.BIP34Hash = uint256();
 227         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 228         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
 229         consensus.nPowTargetSpacing = 10 * 60;
 230         consensus.fPowAllowMinDifficultyBlocks = true;
 231         consensus.fPowNoRetargeting = true;
 232         consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
 233         consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
 234
 235         pchMessageStart[0] = 0xfa;
 236         pchMessageStart[1] = 0xbf;
 237         pchMessageStart[2] = 0xb5;
 238         pchMessageStart[3] = 0xda;
 239         nDefaultPort = 18444;
 240         nPruneAfterHeight = 1000;
 241
 242         genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
 243         consensus.hashGenesisBlock = genesis.GetHash();
 244         assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
 245         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 246
 247         vFixedSeeds.clear(); //! Regtest mode doesn't have any fixed seeds.
 248         vSeeds.clear();  //! Regtest mode doesn't have any DNS seeds.
 249
 250         fMiningRequiresPeers = false;
 251         fDefaultConsistencyChecks = true;
 252         fRequireStandard = false;
 253         fMineBlocksOnDemand = true;
 254         fTestnetToBeDeprecatedFieldRPC = false;
 255
 256         checkpointData = (CCheckpointData){
 257             boost::assign::map_list_of
 258             ( 0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")),
 259             0,
 260             0,
 261             0
 262         };
 263         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
 264         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
 265         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
 266         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
 267         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
 268     }
 269 };
 270 static CRegTestParams regTestParams;
 271
 272 static CChainParams *pCurrentParams = 0;
 273
 274 const CChainParams &Params() {
 275     assert(pCurrentParams);
 276     return *pCurrentParams;
 277 }
 278
 279 CChainParams& Params(const std::string& chain)
 280 {
 281     if (chain == CBaseChainParams::MAIN)
 282             return mainParams;
 283     else if (chain == CBaseChainParams::TESTNET)
 284             return testNetParams;
 285     else if (chain == CBaseChainParams::REGTEST)
 286             return regTestParams;
 287     else
 288         throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 289 }
 290
 291 void SelectParams(const std::string& network)
 292 {
 293     SelectBaseParams(network);
 294     pCurrentParams = &Params(network);
 295 }