LCOV - code coverage report
Current view: top level - src/kernel - chainparams.cpp (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 310 337 92.0 %
Date: 2023-11-12 01:39:15 Functions: 10 14 71.4 %
Branches: 178 380 46.8 %

           Branch data     Line data    Source code
       1                 :            : // Copyright (c) 2010 Satoshi Nakamoto
       2                 :            : // Copyright (c) 2009-2021 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 <kernel/chainparams.h>
       7                 :            : 
       8                 :            : #include <chainparamsseeds.h>
       9                 :            : #include <consensus/amount.h>
      10                 :            : #include <consensus/merkle.h>
      11                 :            : #include <consensus/params.h>
      12                 :            : #include <hash.h>
      13                 :            : #include <kernel/messagestartchars.h>
      14                 :            : #include <logging.h>
      15                 :            : #include <primitives/block.h>
      16                 :            : #include <primitives/transaction.h>
      17                 :            : #include <script/interpreter.h>
      18                 :            : #include <script/script.h>
      19                 :            : #include <uint256.h>
      20                 :            : #include <util/chaintype.h>
      21                 :            : #include <util/strencodings.h>
      22                 :            : 
      23                 :            : #include <algorithm>
      24                 :            : #include <cassert>
      25                 :            : #include <cstdint>
      26                 :            : #include <cstring>
      27                 :            : #include <type_traits>
      28                 :            : 
      29                 :          5 : static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
      30                 :            : {
      31                 :          5 :     CMutableTransaction txNew;
      32                 :          5 :     txNew.nVersion = 1;
      33         [ +  - ]:          5 :     txNew.vin.resize(1);
      34         [ +  - ]:          5 :     txNew.vout.resize(1);
      35 [ +  - ][ +  - ]:          5 :     txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
         [ +  - ][ +  - ]
         [ +  - ][ +  - ]
                 [ +  - ]
      36                 :          5 :     txNew.vout[0].nValue = genesisReward;
      37         [ +  - ]:          5 :     txNew.vout[0].scriptPubKey = genesisOutputScript;
      38                 :            : 
      39         [ +  - ]:          5 :     CBlock genesis;
      40                 :          5 :     genesis.nTime    = nTime;
      41                 :          5 :     genesis.nBits    = nBits;
      42                 :          5 :     genesis.nNonce   = nNonce;
      43                 :          5 :     genesis.nVersion = nVersion;
      44 [ +  - ][ +  - ]:          5 :     genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
      45         [ +  - ]:          5 :     genesis.hashPrevBlock.SetNull();
      46         [ +  - ]:          5 :     genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
      47                 :          5 :     return genesis;
      48         [ +  - ]:          5 : }
      49                 :            : 
      50                 :            : /**
      51                 :            :  * Build the genesis block. Note that the output of its generation
      52                 :            :  * transaction cannot be spent since it did not originally exist in the
      53                 :            :  * database.
      54                 :            :  *
      55                 :            :  * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
      56                 :            :  *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
      57                 :            :  *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
      58                 :            :  *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
      59                 :            :  *   vMerkleTree: 4a5e1e
      60                 :            :  */
      61                 :          5 : static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
      62                 :            : {
      63                 :          5 :     const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
      64 [ +  - ][ +  - ]:          5 :     const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
         [ +  - ][ +  - ]
      65         [ -  + ]:          5 :     return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
      66                 :          5 : }
      67                 :            : 
      68                 :            : /**
      69                 :            :  * Main network on which people trade goods and services.
      70                 :            :  */
      71                 :          0 : class CMainParams : public CChainParams {
      72                 :            : public:
      73                 :          1 :     CMainParams() {
      74                 :          1 :         m_chain_type = ChainType::MAIN;
      75                 :          1 :         consensus.signet_blocks = false;
      76                 :          1 :         consensus.signet_challenge.clear();
      77                 :          1 :         consensus.nSubsidyHalvingInterval = 210000;
      78         [ +  - ]:          1 :         consensus.script_flag_exceptions.emplace( // BIP16 exception
      79         [ +  - ]:          1 :             uint256S("0x00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"), SCRIPT_VERIFY_NONE);
      80         [ +  - ]:          1 :         consensus.script_flag_exceptions.emplace( // Taproot exception
      81         [ +  - ]:          1 :             uint256S("0x0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"), SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
      82                 :          1 :         consensus.BIP34Height = 227931;
      83         [ +  - ]:          1 :         consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
      84                 :          1 :         consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
      85                 :          1 :         consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
      86                 :          1 :         consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
      87                 :          1 :         consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
      88                 :          1 :         consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
      89         [ +  - ]:          1 :         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
      90                 :          1 :         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
      91                 :          1 :         consensus.nPowTargetSpacing = 10 * 60;
      92                 :          1 :         consensus.fPowAllowMinDifficultyBlocks = false;
      93                 :          1 :         consensus.fPowNoRetargeting = false;
      94                 :          1 :         consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
      95                 :          1 :         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
      96                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
      97                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
      98                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
      99                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
     100                 :            : 
     101                 :            :         // Deployment of Taproot (BIPs 340-342)
     102                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
     103                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
     104                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
     105                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
     106                 :            : 
     107         [ +  - ]:          1 :         consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000052b2559353df4117b7348b64");
     108         [ +  - ]:          1 :         consensus.defaultAssumeValid = uint256S("0x00000000000000000001a0a448d6cf2546b06801389cc030b2b18c6491266815"); // 804000
     109                 :            : 
     110                 :            :         /**
     111                 :            :          * The message start string is designed to be unlikely to occur in normal data.
     112                 :            :          * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
     113                 :            :          * a large 32-bit integer with any alignment.
     114                 :            :          */
     115                 :          1 :         pchMessageStart[0] = 0xf9;
     116                 :          1 :         pchMessageStart[1] = 0xbe;
     117                 :          1 :         pchMessageStart[2] = 0xb4;
     118                 :          1 :         pchMessageStart[3] = 0xd9;
     119                 :          1 :         nDefaultPort = 8333;
     120                 :          1 :         nPruneAfterHeight = 100000;
     121                 :          1 :         m_assumed_blockchain_size = 590;
     122                 :          1 :         m_assumed_chain_state_size = 9;
     123                 :            : 
     124         [ +  - ]:          1 :         genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
     125         [ +  - ]:          1 :         consensus.hashGenesisBlock = genesis.GetHash();
     126 [ +  - ][ +  - ]:          1 :         assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
                 [ +  - ]
     127 [ +  - ][ +  - ]:          1 :         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
                 [ +  - ]
     128                 :            : 
     129                 :            :         // Note that of those which support the service bits prefix, most only support a subset of
     130                 :            :         // possible options.
     131                 :            :         // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
     132                 :            :         // service bits we want, but we should get them updated to support all service bits wanted by any
     133                 :            :         // release ASAP to avoid it where possible.
     134         [ +  - ]:          1 :         vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
     135         [ +  - ]:          1 :         vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
     136         [ +  - ]:          1 :         vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org."); // Luke Dashjr
     137         [ +  - ]:          1 :         vSeeds.emplace_back("seed.bitcoinstats.com."); // Christian Decker, supports x1 - xf
     138         [ +  - ]:          1 :         vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
     139         [ +  - ]:          1 :         vSeeds.emplace_back("seed.btc.petertodd.org."); // Peter Todd, only supports x1, x5, x9, and xd
     140         [ +  - ]:          1 :         vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
     141         [ +  - ]:          1 :         vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
     142         [ +  - ]:          1 :         vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
     143                 :            : 
     144         [ +  - ]:          1 :         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
     145         [ +  - ]:          1 :         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
     146         [ +  - ]:          1 :         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
     147         [ +  - ]:          1 :         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
     148         [ +  - ]:          1 :         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
     149                 :            : 
     150         [ +  - ]:          1 :         bech32_hrp = "bc";
     151                 :            : 
     152         [ +  - ]:          1 :         vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
     153                 :            : 
     154                 :          1 :         fDefaultConsistencyChecks = false;
     155                 :          1 :         m_is_mockable_chain = false;
     156                 :            : 
     157                 :          2 :         checkpointData = {
     158         [ +  - ]:         14 :             {
     159 [ +  - ][ +  - ]:          1 :                 { 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
     160 [ +  - ][ +  - ]:          1 :                 { 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
     161 [ +  - ][ +  - ]:          1 :                 { 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
     162 [ +  - ][ +  - ]:          1 :                 {105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
     163 [ +  - ][ +  - ]:          1 :                 {134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
     164 [ +  - ][ +  - ]:          1 :                 {168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
     165 [ +  - ][ +  - ]:          1 :                 {193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
     166 [ +  - ][ +  - ]:          1 :                 {210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
     167 [ +  - ][ +  - ]:          1 :                 {216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
     168 [ +  - ][ +  - ]:          1 :                 {225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
     169 [ +  - ][ +  - ]:          1 :                 {250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
     170 [ +  - ][ +  - ]:          1 :                 {279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
     171 [ +  - ][ +  - ]:          1 :                 {295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")},
     172                 :            :             }
     173                 :            :         };
     174                 :            : 
     175         [ +  - ]:          1 :         m_assumeutxo_data = {
     176                 :            :             // TODO to be specified in a future patch.
     177                 :            :         };
     178                 :            : 
     179                 :          1 :         chainTxData = ChainTxData{
     180                 :            :             // Data from RPC: getchaintxstats 4096 00000000000000000001a0a448d6cf2546b06801389cc030b2b18c6491266815
     181                 :            :             .nTime    = 1692502494,
     182                 :            :             .nTxCount = 881818374,
     183                 :            :             .dTxRate  = 5.521964628130412,
     184                 :            :         };
     185                 :          1 :     }
     186                 :            : };
     187                 :            : 
     188                 :            : /**
     189                 :            :  * Testnet (v3): public test network which is reset from time to time.
     190                 :            :  */
     191                 :          0 : class CTestNetParams : public CChainParams {
     192                 :            : public:
     193                 :          1 :     CTestNetParams() {
     194                 :          1 :         m_chain_type = ChainType::TESTNET;
     195                 :          1 :         consensus.signet_blocks = false;
     196                 :          1 :         consensus.signet_challenge.clear();
     197                 :          1 :         consensus.nSubsidyHalvingInterval = 210000;
     198         [ +  - ]:          1 :         consensus.script_flag_exceptions.emplace( // BIP16 exception
     199         [ +  - ]:          1 :             uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"), SCRIPT_VERIFY_NONE);
     200                 :          1 :         consensus.BIP34Height = 21111;
     201         [ +  - ]:          1 :         consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
     202                 :          1 :         consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
     203                 :          1 :         consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
     204                 :          1 :         consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
     205                 :          1 :         consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
     206                 :          1 :         consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
     207         [ +  - ]:          1 :         consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
     208                 :          1 :         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
     209                 :          1 :         consensus.nPowTargetSpacing = 10 * 60;
     210                 :          1 :         consensus.fPowAllowMinDifficultyBlocks = true;
     211                 :          1 :         consensus.fPowNoRetargeting = false;
     212                 :          1 :         consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
     213                 :          1 :         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
     214                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
     215                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
     216                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
     217                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
     218                 :            : 
     219                 :            :         // Deployment of Taproot (BIPs 340-342)
     220                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
     221                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
     222                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
     223                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
     224                 :            : 
     225         [ +  - ]:          1 :         consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000b6a51f415a67c0da307");
     226         [ +  - ]:          1 :         consensus.defaultAssumeValid = uint256S("0x0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"); // 2500000
     227                 :            : 
     228                 :          1 :         pchMessageStart[0] = 0x0b;
     229                 :          1 :         pchMessageStart[1] = 0x11;
     230                 :          1 :         pchMessageStart[2] = 0x09;
     231                 :          1 :         pchMessageStart[3] = 0x07;
     232                 :          1 :         nDefaultPort = 18333;
     233                 :          1 :         nPruneAfterHeight = 1000;
     234                 :          1 :         m_assumed_blockchain_size = 42;
     235                 :          1 :         m_assumed_chain_state_size = 3;
     236                 :            : 
     237         [ +  - ]:          1 :         genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
     238         [ +  - ]:          1 :         consensus.hashGenesisBlock = genesis.GetHash();
     239 [ +  - ][ +  - ]:          1 :         assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
                 [ +  - ]
     240 [ +  - ][ +  - ]:          1 :         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
                 [ +  - ]
     241                 :            : 
     242                 :          1 :         vFixedSeeds.clear();
     243                 :          1 :         vSeeds.clear();
     244                 :            :         // nodes with support for servicebits filtering should be at the top
     245         [ +  - ]:          1 :         vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
     246         [ +  - ]:          1 :         vSeeds.emplace_back("seed.tbtc.petertodd.org.");
     247         [ +  - ]:          1 :         vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
     248         [ +  - ]:          1 :         vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
     249                 :            : 
     250         [ +  - ]:          1 :         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
     251         [ +  - ]:          1 :         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
     252         [ +  - ]:          1 :         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
     253         [ +  - ]:          1 :         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
     254         [ +  - ]:          1 :         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
     255                 :            : 
     256         [ +  - ]:          1 :         bech32_hrp = "tb";
     257                 :            : 
     258         [ +  - ]:          1 :         vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
     259                 :            : 
     260                 :          1 :         fDefaultConsistencyChecks = false;
     261                 :          1 :         m_is_mockable_chain = false;
     262                 :            : 
     263                 :          2 :         checkpointData = {
     264         [ +  - ]:          2 :             {
     265 [ +  - ][ +  - ]:          1 :                 {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
     266                 :            :             }
     267                 :            :         };
     268                 :            : 
     269         [ +  - ]:          2 :         m_assumeutxo_data = {
     270                 :          2 :             {
     271                 :            :                 .height = 2'500'000,
     272 [ +  - ][ +  - ]:          1 :                 .hash_serialized = AssumeutxoHash{uint256S("0xf841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7")},
     273                 :            :                 .nChainTx = 66484552,
     274         [ +  - ]:          1 :                 .blockhash = uint256S("0x0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f")
     275                 :            :             }
     276                 :            :         };
     277                 :            : 
     278                 :          1 :         chainTxData = ChainTxData{
     279                 :            :             // Data from RPC: getchaintxstats 4096 0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f
     280                 :            :             .nTime    = 1694733634,
     281                 :            :             .nTxCount = 66484552,
     282                 :            :             .dTxRate  = 0.1804908356632494,
     283                 :            :         };
     284                 :          1 :     }
     285                 :            : };
     286                 :            : 
     287                 :            : /**
     288                 :            :  * Signet: test network with an additional consensus parameter (see BIP325).
     289                 :            :  */
     290                 :          0 : class SigNetParams : public CChainParams {
     291                 :            : public:
     292                 :          1 :     explicit SigNetParams(const SigNetOptions& options)
     293                 :            :     {
     294                 :          1 :         std::vector<uint8_t> bin;
     295                 :          1 :         vSeeds.clear();
     296                 :            : 
     297         [ +  - ]:          1 :         if (!options.challenge) {
     298         [ +  - ]:          1 :             bin = ParseHex("512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae");
     299         [ +  - ]:          1 :             vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
     300                 :            : 
     301                 :            :             // Hardcoded nodes can be removed once there are more DNS seeds
     302         [ +  - ]:          1 :             vSeeds.emplace_back("178.128.221.177");
     303         [ +  - ]:          1 :             vSeeds.emplace_back("v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333");
     304                 :            : 
     305         [ +  - ]:          1 :             consensus.nMinimumChainWork = uint256S("0x000000000000000000000000000000000000000000000000000001ad46be4862");
     306         [ +  - ]:          1 :             consensus.defaultAssumeValid = uint256S("0x0000013d778ba3f914530f11f6b69869c9fab54acff85acd7b8201d111f19b7f"); // 150000
     307                 :          1 :             m_assumed_blockchain_size = 1;
     308                 :          1 :             m_assumed_chain_state_size = 0;
     309                 :          1 :             chainTxData = ChainTxData{
     310                 :            :                 // Data from RPC: getchaintxstats 4096 0000013d778ba3f914530f11f6b69869c9fab54acff85acd7b8201d111f19b7f
     311                 :            :                 .nTime    = 1688366339,
     312                 :            :                 .nTxCount = 2262750,
     313                 :            :                 .dTxRate  = 0.003414084572046456,
     314                 :            :             };
     315                 :          1 :         } else {
     316         [ #  # ]:          0 :             bin = *options.challenge;
     317         [ #  # ]:          0 :             consensus.nMinimumChainWork = uint256{};
     318         [ #  # ]:          0 :             consensus.defaultAssumeValid = uint256{};
     319                 :          0 :             m_assumed_blockchain_size = 0;
     320                 :          0 :             m_assumed_chain_state_size = 0;
     321                 :          0 :             chainTxData = ChainTxData{
     322                 :            :                 0,
     323                 :            :                 0,
     324                 :            :                 0,
     325                 :            :             };
     326 [ #  # ][ #  # ]:          0 :             LogPrintf("Signet with challenge %s\n", HexStr(bin));
         [ #  # ][ #  # ]
                 [ #  # ]
     327                 :            :         }
     328                 :            : 
     329         [ -  + ]:          1 :         if (options.seeds) {
     330         [ #  # ]:          0 :             vSeeds = *options.seeds;
     331                 :          0 :         }
     332                 :            : 
     333                 :          1 :         m_chain_type = ChainType::SIGNET;
     334                 :          1 :         consensus.signet_blocks = true;
     335         [ +  - ]:          1 :         consensus.signet_challenge.assign(bin.begin(), bin.end());
     336                 :          1 :         consensus.nSubsidyHalvingInterval = 210000;
     337                 :          1 :         consensus.BIP34Height = 1;
     338         [ +  - ]:          1 :         consensus.BIP34Hash = uint256{};
     339                 :          1 :         consensus.BIP65Height = 1;
     340                 :          1 :         consensus.BIP66Height = 1;
     341                 :          1 :         consensus.CSVHeight = 1;
     342                 :          1 :         consensus.SegwitHeight = 1;
     343                 :          1 :         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
     344                 :          1 :         consensus.nPowTargetSpacing = 10 * 60;
     345                 :          1 :         consensus.fPowAllowMinDifficultyBlocks = false;
     346                 :          1 :         consensus.fPowNoRetargeting = false;
     347                 :          1 :         consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
     348                 :          1 :         consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
     349                 :          1 :         consensus.MinBIP9WarningHeight = 0;
     350         [ +  - ]:          1 :         consensus.powLimit = uint256S("00000377ae000000000000000000000000000000000000000000000000000000");
     351                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
     352                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
     353                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
     354                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
     355                 :            : 
     356                 :            :         // Activation of Taproot (BIPs 340-342)
     357                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
     358                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
     359                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
     360                 :          1 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
     361                 :            : 
     362                 :            :         // message start is defined as the first 4 bytes of the sha256d of the block script
     363         [ +  - ]:          1 :         HashWriter h{};
     364         [ +  - ]:          1 :         h << consensus.signet_challenge;
     365         [ +  - ]:          1 :         uint256 hash = h.GetHash();
     366 [ +  - ][ +  - ]:          1 :         std::copy_n(hash.begin(), 4, pchMessageStart.begin());
     367                 :            : 
     368                 :          1 :         nDefaultPort = 38333;
     369                 :          1 :         nPruneAfterHeight = 1000;
     370                 :            : 
     371         [ +  - ]:          1 :         genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
     372         [ +  - ]:          1 :         consensus.hashGenesisBlock = genesis.GetHash();
     373 [ +  - ][ +  - ]:          1 :         assert(consensus.hashGenesisBlock == uint256S("0x00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"));
                 [ +  - ]
     374 [ +  - ][ +  - ]:          1 :         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
                 [ +  - ]
     375                 :            : 
     376                 :          1 :         vFixedSeeds.clear();
     377                 :            : 
     378         [ +  - ]:          2 :         m_assumeutxo_data = {
     379                 :          2 :             {
     380                 :            :                 .height = 160'000,
     381 [ +  - ][ +  - ]:          1 :                 .hash_serialized = AssumeutxoHash{uint256S("0xfe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a")},
     382                 :            :                 .nChainTx = 2289496,
     383         [ +  - ]:          1 :                 .blockhash = uint256S("0x0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c")
     384                 :            :             }
     385                 :            :         };
     386                 :            : 
     387         [ +  - ]:          1 :         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
     388         [ +  - ]:          1 :         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
     389         [ +  - ]:          1 :         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
     390         [ +  - ]:          1 :         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
     391         [ +  - ]:          1 :         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
     392                 :            : 
     393         [ +  - ]:          1 :         bech32_hrp = "tb";
     394                 :            : 
     395                 :          1 :         fDefaultConsistencyChecks = false;
     396                 :          1 :         m_is_mockable_chain = false;
     397                 :          1 :     }
     398                 :            : };
     399                 :            : 
     400                 :            : /**
     401                 :            :  * Regression test: intended for private networks only. Has minimal difficulty to ensure that
     402                 :            :  * blocks can be found instantly.
     403                 :            :  */
     404                 :          0 : class CRegTestParams : public CChainParams
     405                 :            : {
     406                 :            : public:
     407                 :          2 :     explicit CRegTestParams(const RegTestOptions& opts)
     408                 :            :     {
     409                 :          2 :         m_chain_type = ChainType::REGTEST;
     410                 :          2 :         consensus.signet_blocks = false;
     411                 :          2 :         consensus.signet_challenge.clear();
     412                 :          2 :         consensus.nSubsidyHalvingInterval = 150;
     413                 :          2 :         consensus.BIP34Height = 1; // Always active unless overridden
     414         [ +  - ]:          2 :         consensus.BIP34Hash = uint256();
     415                 :          2 :         consensus.BIP65Height = 1;  // Always active unless overridden
     416                 :          2 :         consensus.BIP66Height = 1;  // Always active unless overridden
     417                 :          2 :         consensus.CSVHeight = 1;    // Always active unless overridden
     418                 :          2 :         consensus.SegwitHeight = 0; // Always active unless overridden
     419                 :          2 :         consensus.MinBIP9WarningHeight = 0;
     420         [ +  - ]:          2 :         consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
     421                 :          2 :         consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
     422                 :          2 :         consensus.nPowTargetSpacing = 10 * 60;
     423                 :          2 :         consensus.fPowAllowMinDifficultyBlocks = true;
     424                 :          2 :         consensus.fPowNoRetargeting = true;
     425                 :          2 :         consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
     426                 :          2 :         consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
     427                 :            : 
     428                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
     429                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
     430                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
     431                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
     432                 :            : 
     433                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
     434                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
     435                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
     436                 :          2 :         consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
     437                 :            : 
     438         [ +  - ]:          2 :         consensus.nMinimumChainWork = uint256{};
     439         [ +  - ]:          2 :         consensus.defaultAssumeValid = uint256{};
     440                 :            : 
     441                 :          2 :         pchMessageStart[0] = 0xfa;
     442                 :          2 :         pchMessageStart[1] = 0xbf;
     443                 :          2 :         pchMessageStart[2] = 0xb5;
     444                 :          2 :         pchMessageStart[3] = 0xda;
     445                 :          2 :         nDefaultPort = 18444;
     446                 :          2 :         nPruneAfterHeight = opts.fastprune ? 100 : 1000;
     447                 :          2 :         m_assumed_blockchain_size = 0;
     448                 :          2 :         m_assumed_chain_state_size = 0;
     449                 :            : 
     450         [ -  + ]:          2 :         for (const auto& [dep, height] : opts.activation_heights) {
     451   [ #  #  #  #  :          0 :             switch (dep) {
                   #  # ]
     452                 :            :             case Consensus::BuriedDeployment::DEPLOYMENT_SEGWIT:
     453                 :          0 :                 consensus.SegwitHeight = int{height};
     454                 :          0 :                 break;
     455                 :            :             case Consensus::BuriedDeployment::DEPLOYMENT_HEIGHTINCB:
     456                 :          0 :                 consensus.BIP34Height = int{height};
     457                 :          0 :                 break;
     458                 :            :             case Consensus::BuriedDeployment::DEPLOYMENT_DERSIG:
     459                 :          0 :                 consensus.BIP66Height = int{height};
     460                 :          0 :                 break;
     461                 :            :             case Consensus::BuriedDeployment::DEPLOYMENT_CLTV:
     462                 :          0 :                 consensus.BIP65Height = int{height};
     463                 :          0 :                 break;
     464                 :            :             case Consensus::BuriedDeployment::DEPLOYMENT_CSV:
     465                 :          0 :                 consensus.CSVHeight = int{height};
     466                 :          0 :                 break;
     467                 :            :             }
     468                 :            :         }
     469                 :            : 
     470         [ -  + ]:          2 :         for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
     471                 :          0 :             consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
     472                 :          0 :             consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
     473                 :          0 :             consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
     474                 :            :         }
     475                 :            : 
     476         [ +  - ]:          2 :         genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
     477         [ +  - ]:          2 :         consensus.hashGenesisBlock = genesis.GetHash();
     478 [ +  - ][ +  - ]:          2 :         assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
                 [ +  - ]
     479 [ +  - ][ +  - ]:          2 :         assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
                 [ +  - ]
     480                 :            : 
     481                 :          2 :         vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
     482                 :          2 :         vSeeds.clear();
     483         [ +  - ]:          2 :         vSeeds.emplace_back("dummySeed.invalid.");
     484                 :            : 
     485                 :          2 :         fDefaultConsistencyChecks = true;
     486                 :          2 :         m_is_mockable_chain = true;
     487                 :            : 
     488                 :          4 :         checkpointData = {
     489         [ +  - ]:          4 :             {
     490 [ +  - ][ +  - ]:          2 :                 {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
     491                 :            :             }
     492                 :            :         };
     493                 :            : 
     494         [ +  - ]:          6 :         m_assumeutxo_data = {
     495                 :          4 :             {
     496                 :            :                 .height = 110,
     497 [ +  - ][ +  - ]:          2 :                 .hash_serialized = AssumeutxoHash{uint256S("0x6657b736d4fe4db0cbc796789e812d5dba7f5c143764b1b6905612f1830609d1")},
     498                 :            :                 .nChainTx = 111,
     499         [ +  - ]:          2 :                 .blockhash = uint256S("0x696e92821f65549c7ee134edceeeeaaa4105647a3c4fd9f298c0aec0ab50425c")
     500                 :            :             },
     501                 :          4 :             {
     502                 :            :                 // For use by test/functional/feature_assumeutxo.py
     503                 :            :                 .height = 299,
     504 [ +  - ][ +  - ]:          2 :                 .hash_serialized = AssumeutxoHash{uint256S("0x61d9c2b29a2571a5fe285fe2d8554f91f93309666fc9b8223ee96338de25ff53")},
     505                 :            :                 .nChainTx = 300,
     506         [ +  - ]:          2 :                 .blockhash = uint256S("0x7e0517ef3ea6ecbed9117858e42eedc8eb39e8698a38dcbd1b3962a283233f4c")
     507                 :            :             },
     508                 :            :         };
     509                 :            : 
     510                 :          2 :         chainTxData = ChainTxData{
     511                 :            :             0,
     512                 :            :             0,
     513                 :            :             0
     514                 :            :         };
     515                 :            : 
     516         [ +  - ]:          2 :         base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
     517         [ +  - ]:          2 :         base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
     518         [ +  - ]:          2 :         base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
     519         [ +  - ]:          2 :         base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
     520         [ +  - ]:          2 :         base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
     521                 :            : 
     522         [ +  - ]:          2 :         bech32_hrp = "bcrt";
     523                 :          2 :     }
     524                 :            : };
     525                 :            : 
     526                 :          1 : std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
     527                 :            : {
     528                 :          1 :     return std::make_unique<const SigNetParams>(options);
     529                 :            : }
     530                 :            : 
     531                 :          2 : std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
     532                 :            : {
     533                 :          2 :     return std::make_unique<const CRegTestParams>(options);
     534                 :            : }
     535                 :            : 
     536                 :          1 : std::unique_ptr<const CChainParams> CChainParams::Main()
     537                 :            : {
     538                 :          1 :     return std::make_unique<const CMainParams>();
     539                 :            : }
     540                 :            : 
     541                 :          1 : std::unique_ptr<const CChainParams> CChainParams::TestNet()
     542                 :            : {
     543                 :          1 :     return std::make_unique<const CTestNetParams>();
     544                 :            : }

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