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 "chainparamsseeds.h"
  16
  17 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  18 {
  19     CMutableTransaction txNew;
  20     txNew.nVersion = 1;
  21     txNew.vin.resize(1);
  22     txNew.vout.resize(1);
  23     txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
  24     txNew.vout[0].nValue = genesisReward;
  25     txNew.vout[0].scriptPubKey = genesisOutputScript;
  26
  27     CBlock genesis;
  28     genesis.nTime    = nTime;
  29     genesis.nBits    = nBits;
  30     genesis.nNonce   = nNonce;
  31     genesis.nVersion = nVersion;
  32     genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
  33     genesis.hashPrevBlock.SetNull();
  34     genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
  35     return genesis;
  36 }
  37
  38 /**
  39  * Build the genesis block. Note that the output of its generation
  40  * transaction cannot be spent since it did not originally exist in the
  41  * database.
  42  *
  43  * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
  44  *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
  45  *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
  46  *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
  47  *   vMerkleTree: 4a5e1e
  48  */
  49 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  50 {
  51     const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
  52     const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
  53     return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
  54 }
  55
  56 void CChainParams::UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
  57 {
  58     consensus.vDeployments[d].nStartTime = nStartTime;
  59     consensus.vDeployments[d].nTimeout = nTimeout;
  60 }
  61
  62 /**
  63  * Main network
  64  */
  65 /**
  66  * What makes a good checkpoint block?
  67  * + Is surrounded by blocks with reasonable timestamps
  68  *   (no blocks before with a timestamp after, none after with
  69  *    timestamp before)
  70  * + Contains no strange transactions
  71  */
  72
  73 class CMainParams : public CChainParams {
  74 public:
  75     CMainParams() {
  76         strNetworkID = "main";
  77         consensus.nSubsidyHalvingInterval = 210000;
  78         consensus.BIP34Height = 227931;
  79         consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
  80         consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
  81         consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
  82         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  83         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
  84         consensus.nPowTargetSpacing = 10 * 60;
  85         consensus.fPowAllowMinDifficultyBlocks = false;
  86         consensus.fPowNoRetargeting = false;
  87         consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
  88         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
  89         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
  90         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
  91         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
  92
  93         // Deployment of BIP68, BIP112, and BIP113.
  94         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
  95         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
  96         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
  97
  98         // Deployment of SegWit (BIP141, BIP143, and BIP147)
  99         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
 100         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
 101         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.
 102
 103         // The best chain should have at least this much work.
 104         consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000723d3581fe1bd55373540a");
 105
 106         // By default assume that the signatures in ancestors of this block are valid.
 107         consensus.defaultAssumeValid = uint256S("0x0000000000000000003b9ce759c2a087d52abc4266f8f4ebd6d768b89defa50a"); //477890
 108
 109         /**
 110          * The message start string is designed to be unlikely to occur in normal data.
 111          * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
 112          * a large 32-bit integer with any alignment.
 113          */
 114         pchMessageStart[0] = 0xf9;
 115         pchMessageStart[1] = 0xbe;
 116         pchMessageStart[2] = 0xb4;
 117         pchMessageStart[3] = 0xd9;
 118         nDefaultPort = 8333;
 119         nPruneAfterHeight = 100000;
 120
 121         genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
 122         consensus.hashGenesisBlock = genesis.GetHash();
 123         assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
 124         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 125
 126         // Note that of those with the service bits flag, most only support a subset of possible options
 127         vSeeds.emplace_back("seed.bitcoin.sipa.be", true); // Pieter Wuille, only supports x1, x5, x9, and xd
 128         vSeeds.emplace_back("dnsseed.bluematt.me", true); // Matt Corallo, only supports x9
 129         vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org", false); // Luke Dashjr
 130         vSeeds.emplace_back("seed.bitcoinstats.com", true); // Christian Decker, supports x1 - xf
 131         vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch", true); // Jonas Schnelli, only supports x1, x5, x9, and xd
 132         vSeeds.emplace_back("seed.btc.petertodd.org", true); // Peter Todd, only supports x1, x5, x9, and xd
 133
 134         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
 135         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
 136         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
 137         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
 138         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
 139
 140         bech32_hrp = "bc";
 141
 142         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
 143
 144         fDefaultConsistencyChecks = false;
 145         fRequireStandard = true;
 146         fMineBlocksOnDemand = false;
 147
 148         checkpointData = (CCheckpointData) {
 149             {
 150                 { 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
 151                 { 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
 152                 { 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
 153                 {105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
 154                 {134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
 155                 {168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
 156                 {193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
 157                 {210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
 158                 {216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
 159                 {225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
 160                 {250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
 161                 {279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
 162                 {295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")},
 163             }
 164         };
 165
 166         chainTxData = ChainTxData{
 167             // Data as of block 000000000000000000d97e53664d17967bd4ee50b23abb92e54a34eb222d15ae (height 478913).
 168             1501801925, // * UNIX timestamp of last known number of transactions
 169             243756039,  // * total number of transactions between genesis and that timestamp
 170                         //   (the tx=... number in the SetBestChain debug.log lines)
 171             3.1         // * estimated number of transactions per second after that timestamp
 172         };
 173     }
 174 };
 175
 176 /**
 177  * Testnet (v3)
 178  */
 179 class CTestNetParams : public CChainParams {
 180 public:
 181     CTestNetParams() {
 182         strNetworkID = "test";
 183         consensus.nSubsidyHalvingInterval = 210000;
 184         consensus.BIP34Height = 21111;
 185         consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
 186         consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
 187         consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
 188         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 189         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
 190         consensus.nPowTargetSpacing = 10 * 60;
 191         consensus.fPowAllowMinDifficultyBlocks = true;
 192         consensus.fPowNoRetargeting = false;
 193         consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
 194         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
 195         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
 196         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
 197         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
 198
 199         // Deployment of BIP68, BIP112, and BIP113.
 200         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
 201         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
 202         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
 203
 204         // Deployment of SegWit (BIP141, BIP143, and BIP147)
 205         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
 206         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
 207         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017
 208
 209         // The best chain should have at least this much work.
 210         consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000002830dab7f76dbb7d63");
 211
 212         // By default assume that the signatures in ancestors of this block are valid.
 213         consensus.defaultAssumeValid = uint256S("0x0000000002e9e7b00e1f6dc5123a04aad68dd0f0968d8c7aa45f6640795c37b1"); //1135275
 214
 215         pchMessageStart[0] = 0x0b;
 216         pchMessageStart[1] = 0x11;
 217         pchMessageStart[2] = 0x09;
 218         pchMessageStart[3] = 0x07;
 219         nDefaultPort = 18333;
 220         nPruneAfterHeight = 1000;
 221
 222         genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
 223         consensus.hashGenesisBlock = genesis.GetHash();
 224         assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
 225         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 226
 227         vFixedSeeds.clear();
 228         vSeeds.clear();
 229         // nodes with support for servicebits filtering should be at the top
 230         vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch", true);
 231         vSeeds.emplace_back("seed.tbtc.petertodd.org", true);
 232         vSeeds.emplace_back("testnet-seed.bluematt.me", false);
 233
 234         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
 235         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
 236         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
 237         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
 238         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
 239
 240         bech32_hrp = "tb";
 241
 242         vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
 243
 244         fDefaultConsistencyChecks = false;
 245         fRequireStandard = false;
 246         fMineBlocksOnDemand = false;
 247
 248
 249         checkpointData = (CCheckpointData) {
 250             {
 251                 {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
 252             }
 253         };
 254
 255         chainTxData = ChainTxData{
 256             // Data as of block 00000000000001c200b9790dc637d3bb141fe77d155b966ed775b17e109f7c6c (height 1156179)
 257             1501802953,
 258             14706531,
 259             0.15
 260         };
 261
 262     }
 263 };
 264
 265 /**
 266  * Regression test
 267  */
 268 class CRegTestParams : public CChainParams {
 269 public:
 270     CRegTestParams() {
 271         strNetworkID = "regtest";
 272         consensus.nSubsidyHalvingInterval = 150;
 273         consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
 274         consensus.BIP34Hash = uint256();
 275         consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
 276         consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
 277         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
 278         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
 279         consensus.nPowTargetSpacing = 10 * 60;
 280         consensus.fPowAllowMinDifficultyBlocks = true;
 281         consensus.fPowNoRetargeting = true;
 282         consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
 283         consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
 284         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
 285         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
 286         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
 287         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
 288         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
 289         consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
 290         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
 291         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
 292         consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
 293
 294         // The best chain should have at least this much work.
 295         consensus.nMinimumChainWork = uint256S("0x00");
 296
 297         // By default assume that the signatures in ancestors of this block are valid.
 298         consensus.defaultAssumeValid = uint256S("0x00");
 299
 300         pchMessageStart[0] = 0xfa;
 301         pchMessageStart[1] = 0xbf;
 302         pchMessageStart[2] = 0xb5;
 303         pchMessageStart[3] = 0xda;
 304         nDefaultPort = 18444;
 305         nPruneAfterHeight = 1000;
 306
 307         genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
 308         consensus.hashGenesisBlock = genesis.GetHash();
 309         assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
 310         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
 311
 312         vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
 313         vSeeds.clear();      //!< Regtest mode doesn't have any DNS seeds.
 314
 315         fDefaultConsistencyChecks = true;
 316         fRequireStandard = false;
 317         fMineBlocksOnDemand = true;
 318
 319         checkpointData = (CCheckpointData) {
 320             {
 321                 {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
 322             }
 323         };
 324
 325         chainTxData = ChainTxData{
 326             0,
 327             0,
 328             0
 329         };
 330
 331         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
 332         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
 333         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
 334         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
 335         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
 336
 337         bech32_hrp = "bcrt";
 338     }
 339 };
 340
 341 static std::unique_ptr<CChainParams> globalChainParams;
 342
 343 const CChainParams &Params() {
 344     assert(globalChainParams);
 345     return *globalChainParams;
 346 }
 347
 348 std::unique_ptr<CChainParams> CreateChainParams(const std::string& chain)
 349 {
 350     if (chain == CBaseChainParams::MAIN)
 351         return std::unique_ptr<CChainParams>(new CMainParams());
 352     else if (chain == CBaseChainParams::TESTNET)
 353         return std::unique_ptr<CChainParams>(new CTestNetParams());
 354     else if (chain == CBaseChainParams::REGTEST)
 355         return std::unique_ptr<CChainParams>(new CRegTestParams());
 356     throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
 357 }
 358
 359 void SelectParams(const std::string& network)
 360 {
 361     SelectBaseParams(network);
 362     globalChainParams = CreateChainParams(network);
 363 }
 364
 365 void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
 366 {
 367     globalChainParams->UpdateVersionBitsParameters(d, nStartTime, nTimeout);
 368 }