src/chainparams.cpp

   1 // Copyright (c) 2010 Satoshi Nakamoto
   2 // Copyright (c) 2009-2016 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(MakeTransactionRef(std::move(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.BIP34Height = 227931;
  75         consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
  76         consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
  77         consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
  78         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  79         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
  80         consensus.nPowTargetSpacing = 10 * 60;
  81         consensus.fPowAllowMinDifficultyBlocks = false;
  82         consensus.fPowNoRetargeting = false;
  83         consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
  84         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
  85         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
  86         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
  87         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
  88
  89         // Deployment of BIP68, BIP112, and BIP113.
  90         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
  91         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
  92         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
  93
  94         // Deployment of SegWit (BIP141, BIP143, and BIP147)
  95         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
  96         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
  97         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.
  98
  99         // The best chain should have at least this much work.
 100         consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000002cb971dd56d1c583c20f90");
 101
 102         // By default assume that the signatures in ancestors of this block are valid.
 103         consensus.defaultAssumeValid = uint256S("0x0000000000000000030abc968e1bd635736e880b946085c93152969b9a81a6e2"); //447235
 104
 105         /**
 106          * The message start string is designed to be unlikely to occur in normal data.
 107          * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
 108          * a large 32-bit integer with any alignment.
 109          */
 110         pchMessageStart[0] = 0xf9;
 111         pchMessageStart[1] = 0xbe;
 112         pchMessageStart[2] = 0xb4;
 113         pchMessageStart[3] = 0xd9;
 114         nDefaultPort = 8333;
 115         nPruneAfterHeight = 100000;
 116
 117         genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
 118         consensus.hashGenesisBlock = genesis.GetHash();
 119         assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
 120         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 121
 122         // Note that of those with the service bits flag, most only support a subset of possible options
 123         vSeeds.push_back(CDNSSeedData("bitcoin.sipa.be", "seed.bitcoin.sipa.be", true)); // Pieter Wuille, only supports x1, x5, x9, and xd
 124         vSeeds.push_back(CDNSSeedData("bluematt.me", "dnsseed.bluematt.me", true)); // Matt Corallo, only supports x9
 125         vSeeds.push_back(CDNSSeedData("dashjr.org", "dnsseed.bitcoin.dashjr.org")); // Luke Dashjr
 126         vSeeds.push_back(CDNSSeedData("bitcoinstats.com", "seed.bitcoinstats.com", true)); // Christian Decker, supports x1 - xf
 127         vSeeds.push_back(CDNSSeedData("xf2.org", "bitseed.xf2.org")); // Jeff Garzik
 128         vSeeds.push_back(CDNSSeedData("bitcoin.jonasschnelli.ch", "seed.bitcoin.jonasschnelli.ch", true)); // Jonas Schnelli, only supports x1, x5, x9, and xd
 129
 130         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
 131         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
 132         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
 133         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x88)(0xB2)(0x1E).convert_to_container<std::vector<unsigned char> >();
 134         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x88)(0xAD)(0xE4).convert_to_container<std::vector<unsigned char> >();
 135
 136         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
 137
 138         fMiningRequiresPeers = true;
 139         fDefaultConsistencyChecks = false;
 140         fRequireStandard = true;
 141         fMineBlocksOnDemand = false;
 142
 143         checkpointData = (CCheckpointData) {
 144             boost::assign::map_list_of
 145             ( 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"))
 146             ( 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"))
 147             ( 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"))
 148             (105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"))
 149             (134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"))
 150             (168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763"))
 151             (193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317"))
 152             (210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e"))
 153             (216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e"))
 154             (225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932"))
 155             (250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214"))
 156             (279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40"))
 157             (295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983"))
 158         };
 159
 160         chainTxData = ChainTxData{
 161             // Data as of block 00000000000000000166d612d5595e2b1cd88d71d695fc580af64d8da8658c23 (height 446482).
 162             1483472411, // * UNIX timestamp of last known number of transactions
 163             184495391,  // * total number of transactions between genesis and that timestamp
 164                         //   (the tx=... number in the SetBestChain debug.log lines)
 165             3.2         // * estimated number of transactions per second after that timestamp
 166         };
 167     }
 168 };
 169 static CMainParams mainParams;
 170
 171 /**
 172  * Testnet (v3)
 173  */
 174 class CTestNetParams : public CChainParams {
 175 public:
 176     CTestNetParams() {
 177         strNetworkID = "test";
 178         consensus.nSubsidyHalvingInterval = 210000;
 179         consensus.BIP34Height = 21111;
 180         consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
 181         consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
 182         consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
 183         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 184         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
 185         consensus.nPowTargetSpacing = 10 * 60;
 186         consensus.fPowAllowMinDifficultyBlocks = true;
 187         consensus.fPowNoRetargeting = false;
 188         consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
 189         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
 190         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
 191         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
 192         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
 193
 194         // Deployment of BIP68, BIP112, and BIP113.
 195         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
 196         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
 197         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
 198
 199         // Deployment of SegWit (BIP141, BIP143, and BIP147)
 200         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
 201         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
 202         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017
 203
 204         // The best chain should have at least this much work.
 205         consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000198b4def2baa9338d6");
 206
 207         // By default assume that the signatures in ancestors of this block are valid.
 208         consensus.defaultAssumeValid = uint256S("0x000000000871ee6842d3648317ccc8a435eb8cc3c2429aee94faff9ba26b05a0"); //1043841
 209
 210         pchMessageStart[0] = 0x0b;
 211         pchMessageStart[1] = 0x11;
 212         pchMessageStart[2] = 0x09;
 213         pchMessageStart[3] = 0x07;
 214         nDefaultPort = 18333;
 215         nPruneAfterHeight = 1000;
 216
 217         genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
 218         consensus.hashGenesisBlock = genesis.GetHash();
 219         assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
 220         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 221
 222         vFixedSeeds.clear();
 223         vSeeds.clear();
 224         // nodes with support for servicebits filtering should be at the top
 225         vSeeds.push_back(CDNSSeedData("testnetbitcoin.jonasschnelli.ch", "testnet-seed.bitcoin.jonasschnelli.ch", true));
 226         vSeeds.push_back(CDNSSeedData("petertodd.org", "seed.tbtc.petertodd.org", true));
 227         vSeeds.push_back(CDNSSeedData("bluematt.me", "testnet-seed.bluematt.me"));
 228         vSeeds.push_back(CDNSSeedData("bitcoin.schildbach.de", "testnet-seed.bitcoin.schildbach.de"));
 229
 230         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
 231         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
 232         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
 233         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
 234         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
 235
 236         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
 237
 238         fMiningRequiresPeers = true;
 239         fDefaultConsistencyChecks = false;
 240         fRequireStandard = false;
 241         fMineBlocksOnDemand = false;
 242
 243
 244         checkpointData = (CCheckpointData) {
 245             boost::assign::map_list_of
 246             ( 546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")),
 247         };
 248
 249         chainTxData = ChainTxData{
 250             // Data as of block 00000000c2872f8f8a8935c8e3c5862be9038c97d4de2cf37ed496991166928a (height 1063660)
 251             1483546230,
 252             12834668,
 253             0.15
 254         };
 255
 256     }
 257 };
 258 static CTestNetParams testNetParams;
 259
 260 /**
 261  * Regression test
 262  */
 263 class CRegTestParams : public CChainParams {
 264 public:
 265     CRegTestParams() {
 266         strNetworkID = "regtest";
 267         consensus.nSubsidyHalvingInterval = 150;
 268         consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
 269         consensus.BIP34Hash = uint256();
 270         consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
 271         consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
 272         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 273         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
 274         consensus.nPowTargetSpacing = 10 * 60;
 275         consensus.fPowAllowMinDifficultyBlocks = true;
 276         consensus.fPowNoRetargeting = true;
 277         consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
 278         consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
 279         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
 280         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
 281         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
 282         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
 283         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
 284         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
 285         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
 286         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
 287         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
 288
 289         // The best chain should have at least this much work.
 290         consensus.nMinimumChainWork = uint256S("0x00");
 291
 292         // By default assume that the signatures in ancestors of this block are valid.
 293         consensus.defaultAssumeValid = uint256S("0x00");
 294
 295         pchMessageStart[0] = 0xfa;
 296         pchMessageStart[1] = 0xbf;
 297         pchMessageStart[2] = 0xb5;
 298         pchMessageStart[3] = 0xda;
 299         nDefaultPort = 18444;
 300         nPruneAfterHeight = 1000;
 301
 302         genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
 303         consensus.hashGenesisBlock = genesis.GetHash();
 304         assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
 305         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 306
 307         vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
 308         vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.
 309
 310         fMiningRequiresPeers = false;
 311         fDefaultConsistencyChecks = true;
 312         fRequireStandard = false;
 313         fMineBlocksOnDemand = true;
 314
 315         checkpointData = (CCheckpointData){
 316             boost::assign::map_list_of
 317             ( 0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"))
 318         };
 319
 320         chainTxData = ChainTxData{
 321             0,
 322             0,
 323             0
 324         };
 325
 326         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
 327         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
 328         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
 329         base58Prefixes[EXT_PUBLIC_KEY] = boost::assign::list_of(0x04)(0x35)(0x87)(0xCF).convert_to_container<std::vector<unsigned char> >();
 330         base58Prefixes[EXT_SECRET_KEY] = boost::assign::list_of(0x04)(0x35)(0x83)(0x94).convert_to_container<std::vector<unsigned char> >();
 331     }
 332
 333     void UpdateBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
 334     {
 335         consensus.vDeployments[d].nStartTime = nStartTime;
 336         consensus.vDeployments[d].nTimeout = nTimeout;
 337     }
 338 };
 339 static CRegTestParams regTestParams;
 340
 341 static CChainParams *pCurrentParams = 0;
 342
 343 const CChainParams &Params() {
 344     assert(pCurrentParams);
 345     return *pCurrentParams;
 346 }
 347
 348 CChainParams& Params(const std::string& chain)
 349 {
 350     if (chain == CBaseChainParams::MAIN)
 351             return mainParams;
 352     else if (chain == CBaseChainParams::TESTNET)
 353             return testNetParams;
 354     else if (chain == CBaseChainParams::REGTEST)
 355             return regTestParams;
 356     else
 357         throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 358 }
 359
 360 void SelectParams(const std::string& network)
 361 {
 362     SelectBaseParams(network);
 363     pCurrentParams = &Params(network);
 364 }
 365
 366 void UpdateRegtestBIP9Parameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
 367 {
 368     regTestParams.UpdateBIP9Parameters(d, nStartTime, nTimeout);
 369 }
 370