// Copyright (c) 2010 Satoshi Nakamoto // Copyright (c) 2009-2019 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 <chainparamsseeds.h> #include <consensus/merkle.h> #include <tinyformat.h> #include <util/system.h> #include <util/strencodings.h> #include <versionbitsinfo.h> #include <assert.h> #include <boost/algorithm/string/classification.hpp> #include <boost/algorithm/string/split.hpp> 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 = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"; const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG; return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward); } /** * Main network */ class CMainParams : public CChainParams { public: CMainParams() { strNetworkID = CBaseChainParams::MAIN; consensus.nSubsidyHalvingInterval = 210000; consensus.BIP16Exception = uint256S("0x00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"); consensus.BIP34Height = 227931; consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"); consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 60; consensus.fPowAllowMinDifficultyBlocks = false; consensus.fPowNoRetargeting = false; consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016 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 // The best chain should have at least this much work. consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000008ea3cf107ae0dec57f03fe8"); // By default assume that the signatures in ancestors of this block are valid. consensus.defaultAssumeValid = uint256S("0x00000000000000000005f8920febd3925f8272a6a71237563d78c2edfdd09ddf"); // 597379 /** * 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] = 0xf9; pchMessageStart[1] = 0xbe; pchMessageStart[2] = 0xb4; pchMessageStart[3] = 0xd9; nDefaultPort = 8333; nPruneAfterHeight = 100000; m_assumed_blockchain_size = 280; m_assumed_chain_state_size = 4; genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN); consensus.hashGenesisBlock = genesis.GetHash(); assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")); assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b")); // Note that of those which support the service bits prefix, most only support a subset of // possible options. // This is fine at runtime as we'll fall back to using them as a oneshot if they don't support the // service bits we want, but we should get them updated to support all service bits wanted by any // release ASAP to avoid it where possible. vSeeds.emplace_back("seed.bitcoin.sipa.be"); // Pieter Wuille, only supports x1, x5, x9, and xd vSeeds.emplace_back("dnsseed.bluematt.me"); // Matt Corallo, only supports x9 vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org"); // Luke Dashjr vSeeds.emplace_back("seed.bitcoinstats.com"); // Christian Decker, supports x1 - xf vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch"); // Jonas Schnelli, only supports x1, x5, x9, and xd vSeeds.emplace_back("seed.btc.petertodd.org"); // Peter Todd, only supports x1, x5, x9, and xd vSeeds.emplace_back("seed.bitcoin.sprovoost.nl"); // Sjors Provoost vSeeds.emplace_back("dnsseed.emzy.de"); // Stephan Oeste base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0); base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5); base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128); base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E}; base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4}; bech32_hrp = "bc"; vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main)); fDefaultConsistencyChecks = false; fRequireStandard = true; m_is_test_chain = false; checkpointData = { { { 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")}, { 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")}, { 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")}, {105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")}, {134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")}, {168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")}, {193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")}, {210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")}, {216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")}, {225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")}, {250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")}, {279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")}, {295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")}, } }; chainTxData = ChainTxData{ // Data from RPC: getchaintxstats 4096 00000000000000000005f8920febd3925f8272a6a71237563d78c2edfdd09ddf /* nTime */ 1569926786, /* nTxCount */ 460596047, /* dTxRate */ 3.77848885073875, }; } }; /** * Testnet (v3) */ class CTestNetParams : public CChainParams { public: CTestNetParams() { strNetworkID = CBaseChainParams::TESTNET; consensus.nSubsidyHalvingInterval = 210000; consensus.BIP16Exception = uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"); consensus.BIP34Height = 21111; consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"); consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 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 // The best chain should have at least this much work. consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000012b2a3a62424f21c918"); // By default assume that the signatures in ancestors of this block are valid. consensus.defaultAssumeValid = uint256S("0x00000000000000b7ab6ce61eb6d571003fbe5fe892da4c9b740c49a07542462d"); // 1580000 pchMessageStart[0] = 0x0b; pchMessageStart[1] = 0x11; pchMessageStart[2] = 0x09; pchMessageStart[3] = 0x07; nDefaultPort = 18333; nPruneAfterHeight = 1000; m_assumed_blockchain_size = 30; m_assumed_chain_state_size = 2; genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN); consensus.hashGenesisBlock = genesis.GetHash(); assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")); assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b")); vFixedSeeds.clear(); vSeeds.clear(); // nodes with support for servicebits filtering should be at the top vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch"); vSeeds.emplace_back("seed.tbtc.petertodd.org"); vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl"); vSeeds.emplace_back("testnet-seed.bluematt.me"); // Just a static list of stable node(s), only supports x9 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111); base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196); 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}; bech32_hrp = "tb"; vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test)); fDefaultConsistencyChecks = false; fRequireStandard = false; m_is_test_chain = true; checkpointData = { { {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")}, } }; chainTxData = ChainTxData{ // Data from RPC: getchaintxstats 4096 00000000000000b7ab6ce61eb6d571003fbe5fe892da4c9b740c49a07542462d /* nTime */ 1569741320, /* nTxCount */ 52318009, /* dTxRate */ 0.1517002392872353, }; } }; /** * Regression test */ class CRegTestParams : public CChainParams { public: explicit CRegTestParams(const ArgsManager& args) { strNetworkID = CBaseChainParams::REGTEST; consensus.nSubsidyHalvingInterval = 150; consensus.BIP16Exception = uint256(); consensus.BIP34Height = 500; // BIP34 activated on regtest (Used in functional tests) consensus.BIP34Hash = uint256(); consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in functional tests) consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in functional tests) consensus.CSVHeight = 432; // CSV activated on regtest (Used in rpc activation tests) consensus.SegwitHeight = 0; // SEGWIT is always activated on regtest unless overridden consensus.MinBIP9WarningHeight = 0; consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"); consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks consensus.nPowTargetSpacing = 10 * 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 = 28; consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0; consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT; // 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"); pchMessageStart[0] = 0xfa; pchMessageStart[1] = 0xbf; pchMessageStart[2] = 0xb5; pchMessageStart[3] = 0xda; nDefaultPort = 18444; nPruneAfterHeight = 1000; m_assumed_blockchain_size = 0; m_assumed_chain_state_size = 0; UpdateActivationParametersFromArgs(args); genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN); consensus.hashGenesisBlock = genesis.GetHash(); assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")); assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b")); vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds. vSeeds.clear(); //!< Regtest mode doesn't have any DNS seeds. fDefaultConsistencyChecks = true; fRequireStandard = true; m_is_test_chain = true; checkpointData = { { {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")}, } }; chainTxData = ChainTxData{ 0, 0, 0 }; base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111); base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196); 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}; bech32_hrp = "bcrt"; } /** * Allows modifying the Version Bits regtest parameters. */ void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout) { consensus.vDeployments[d].nStartTime = nStartTime; consensus.vDeployments[d].nTimeout = nTimeout; } void UpdateActivationParametersFromArgs(const ArgsManager& args); }; void CRegTestParams::UpdateActivationParametersFromArgs(const ArgsManager& args) { if (gArgs.IsArgSet("-segwitheight")) { int64_t height = gArgs.GetArg("-segwitheight", consensus.SegwitHeight); if (height < -1 || height >= std::numeric_limits<int>::max()) { throw std::runtime_error(strprintf("Activation height %ld for segwit is out of valid range. Use -1 to disable segwit.", height)); } else if (height == -1) { LogPrintf("Segwit disabled for testing\n"); height = std::numeric_limits<int>::max(); } consensus.SegwitHeight = static_cast<int>(height); } if (!args.IsArgSet("-vbparams")) return; for (const std::string& strDeployment : args.GetArgs("-vbparams")) { std::vector<std::string> vDeploymentParams; boost::split(vDeploymentParams, strDeployment, boost::is_any_of(":")); if (vDeploymentParams.size() != 3) { throw std::runtime_error("Version bits parameters malformed, expecting deployment:start:end"); } int64_t nStartTime, nTimeout; if (!ParseInt64(vDeploymentParams[1], &nStartTime)) { throw std::runtime_error(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1])); } if (!ParseInt64(vDeploymentParams[2], &nTimeout)) { throw std::runtime_error(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2])); } bool found = false; for (int j=0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) { if (vDeploymentParams[0] == VersionBitsDeploymentInfo[j].name) { UpdateVersionBitsParameters(Consensus::DeploymentPos(j), nStartTime, nTimeout); found = true; LogPrintf("Setting version bits activation parameters for %s to start=%ld, timeout=%ld\n", vDeploymentParams[0], nStartTime, nTimeout); break; } } if (!found) { throw std::runtime_error(strprintf("Invalid deployment (%s)", vDeploymentParams[0])); } } } static std::unique_ptr<const CChainParams> globalChainParams; const CChainParams &Params() { assert(globalChainParams); return *globalChainParams; } std::unique_ptr<const 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(gArgs)); throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain)); } void SelectParams(const std::string& network) { SelectBaseParams(network); globalChainParams = CreateChainParams(network); }