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chainparams.cpp
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1 // Copyright (c) 2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2020 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 
8 #include <chainparamsseeds.h>
9 #include <consensus/merkle.h>
10 #include <hash.h> // for signet block challenge hash
11 #include <tinyformat.h>
12 #include <util/system.h>
13 #include <util/strencodings.h>
14 #include <versionbitsinfo.h>
15 
16 #include <assert.h>
17 
18 #include <boost/algorithm/string/classification.hpp>
19 #include <boost/algorithm/string/split.hpp>
20 
21 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
22 {
23  CMutableTransaction txNew;
24  txNew.nVersion = 1;
25  txNew.vin.resize(1);
26  txNew.vout.resize(1);
27  txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
28  txNew.vout[0].nValue = genesisReward;
29  txNew.vout[0].scriptPubKey = genesisOutputScript;
30 
31  CBlock genesis;
32  genesis.nTime = nTime;
33  genesis.nBits = nBits;
34  genesis.nNonce = nNonce;
35  genesis.nVersion = nVersion;
36  genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
37  genesis.hashPrevBlock.SetNull();
38  genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
39  return genesis;
40 }
41 
53 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
54 {
55  const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
56  const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
57  return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
58 }
59 
63 class CMainParams : public CChainParams {
64 public:
65  CMainParams() {
66  strNetworkID = CBaseChainParams::MAIN;
67  consensus.signet_blocks = false;
68  consensus.signet_challenge.clear();
69  consensus.nSubsidyHalvingInterval = 210000;
70  consensus.BIP16Exception = uint256S("0x00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22");
71  consensus.BIP34Height = 227931;
72  consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
73  consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
74  consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
75  consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
76  consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
77  consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
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 = 1815; // 90% of 2016
84  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
85  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
86  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
87  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
88  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
89 
90  // Deployment of Taproot (BIPs 340-342)
91  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
92  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
93  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
94  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
95 
96  consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000001533efd8d716a517fe2c5008");
97  consensus.defaultAssumeValid = uint256S("0x0000000000000000000b9d2ec5a352ecba0592946514a92f14319dc2b367fc72"); // 654683
98 
104  pchMessageStart[0] = 0xf9;
105  pchMessageStart[1] = 0xbe;
106  pchMessageStart[2] = 0xb4;
107  pchMessageStart[3] = 0xd9;
108  nDefaultPort = 8333;
109  nPruneAfterHeight = 100000;
110  m_assumed_blockchain_size = 350;
111  m_assumed_chain_state_size = 6;
112 
113  genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
114  consensus.hashGenesisBlock = genesis.GetHash();
115  assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
116  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
117 
118  // Note that of those which support the service bits prefix, most only support a subset of
119  // possible options.
120  // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
121  // service bits we want, but we should get them updated to support all service bits wanted by any
122  // release ASAP to avoid it where possible.
123  vSeeds.emplace_back("seed.bitcoin.sipa.be"); // Pieter Wuille, only supports x1, x5, x9, and xd
124  vSeeds.emplace_back("dnsseed.bluematt.me"); // Matt Corallo, only supports x9
125  vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org"); // Luke Dashjr
126  vSeeds.emplace_back("seed.bitcoinstats.com"); // Christian Decker, supports x1 - xf
127  vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch"); // Jonas Schnelli, only supports x1, x5, x9, and xd
128  vSeeds.emplace_back("seed.btc.petertodd.org"); // Peter Todd, only supports x1, x5, x9, and xd
129  vSeeds.emplace_back("seed.bitcoin.sprovoost.nl"); // Sjors Provoost
130  vSeeds.emplace_back("dnsseed.emzy.de"); // Stephan Oeste
131  vSeeds.emplace_back("seed.bitcoin.wiz.biz"); // Jason Maurice
132 
133  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
134  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
135  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
136  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
137  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
138 
139  bech32_hrp = "bc";
140 
141  vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
142 
143  fDefaultConsistencyChecks = false;
144  fRequireStandard = true;
145  m_is_test_chain = false;
146  m_is_mockable_chain = false;
147 
148  checkpointData = {
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 from RPC: getchaintxstats 4096 0000000000000000000b9d2ec5a352ecba0592946514a92f14319dc2b367fc72
168  /* nTime */ 1603995752,
169  /* nTxCount */ 582083445,
170  /* dTxRate */ 3.508976121410527,
171  };
172  }
173 };
174 
178 class CTestNetParams : public CChainParams {
179 public:
180  CTestNetParams() {
181  strNetworkID = CBaseChainParams::TESTNET;
182  consensus.signet_blocks = false;
183  consensus.signet_challenge.clear();
184  consensus.nSubsidyHalvingInterval = 210000;
185  consensus.BIP16Exception = uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105");
186  consensus.BIP34Height = 21111;
187  consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
188  consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
189  consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
190  consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
191  consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
192  consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
193  consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
194  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
195  consensus.nPowTargetSpacing = 10 * 60;
196  consensus.fPowAllowMinDifficultyBlocks = true;
197  consensus.fPowNoRetargeting = false;
198  consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
199  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
200  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
201  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
202  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
203  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
204 
205  // Deployment of Taproot (BIPs 340-342)
206  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
207  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
208  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
209  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
210 
211  consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000001db6ec4ac88cf2272c6");
212  consensus.defaultAssumeValid = uint256S("0x000000000000006433d1efec504c53ca332b64963c425395515b01977bd7b3b0"); // 1864000
213 
214  pchMessageStart[0] = 0x0b;
215  pchMessageStart[1] = 0x11;
216  pchMessageStart[2] = 0x09;
217  pchMessageStart[3] = 0x07;
218  nDefaultPort = 18333;
219  nPruneAfterHeight = 1000;
220  m_assumed_blockchain_size = 40;
221  m_assumed_chain_state_size = 2;
222 
223  genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
224  consensus.hashGenesisBlock = genesis.GetHash();
225  assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
226  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
227 
228  vFixedSeeds.clear();
229  vSeeds.clear();
230  // nodes with support for servicebits filtering should be at the top
231  vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch");
232  vSeeds.emplace_back("seed.tbtc.petertodd.org");
233  vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl");
234  vSeeds.emplace_back("testnet-seed.bluematt.me"); // Just a static list of stable node(s), only supports x9
235 
236  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
237  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
238  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
239  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
240  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
241 
242  bech32_hrp = "tb";
243 
244  vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
245 
246  fDefaultConsistencyChecks = false;
247  fRequireStandard = false;
248  m_is_test_chain = true;
249  m_is_mockable_chain = false;
250 
251  checkpointData = {
252  {
253  {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
254  }
255  };
256 
257  chainTxData = ChainTxData{
258  // Data from RPC: getchaintxstats 4096 000000000000006433d1efec504c53ca332b64963c425395515b01977bd7b3b0
259  /* nTime */ 1603359686,
260  /* nTxCount */ 58090238,
261  /* dTxRate */ 0.1232886622799463,
262  };
263  }
264 };
265 
269 class SigNetParams : public CChainParams {
270 public:
271  explicit SigNetParams(const ArgsManager& args) {
272  std::vector<uint8_t> bin;
273  vSeeds.clear();
274 
275  if (!args.IsArgSet("-signetchallenge")) {
276  bin = ParseHex("512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae");
277  vSeeds.emplace_back("178.128.221.177");
278  vSeeds.emplace_back("2a01:7c8:d005:390::5");
279  vSeeds.emplace_back("v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333");
280 
281  consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000000000000019fd16269a");
282  consensus.defaultAssumeValid = uint256S("0x0000002a1de0f46379358c1fd09906f7ac59adf3712323ed90eb59e4c183c020"); // 9434
283  m_assumed_blockchain_size = 1;
284  m_assumed_chain_state_size = 0;
285  chainTxData = ChainTxData{
286  // Data from RPC: getchaintxstats 4096 0000002a1de0f46379358c1fd09906f7ac59adf3712323ed90eb59e4c183c020
287  /* nTime */ 1603986000,
288  /* nTxCount */ 9582,
289  /* dTxRate */ 0.00159272030651341,
290  };
291  } else {
292  const auto signet_challenge = args.GetArgs("-signetchallenge");
293  if (signet_challenge.size() != 1) {
294  throw std::runtime_error(strprintf("%s: -signetchallenge cannot be multiple values.", __func__));
295  }
296  bin = ParseHex(signet_challenge[0]);
297 
298  consensus.nMinimumChainWork = uint256{};
299  consensus.defaultAssumeValid = uint256{};
300  m_assumed_blockchain_size = 0;
301  m_assumed_chain_state_size = 0;
302  chainTxData = ChainTxData{
303  0,
304  0,
305  0,
306  };
307  LogPrintf("Signet with challenge %s\n", signet_challenge[0]);
308  }
309 
310  if (args.IsArgSet("-signetseednode")) {
311  vSeeds = args.GetArgs("-signetseednode");
312  }
313 
314  strNetworkID = CBaseChainParams::SIGNET;
315  consensus.signet_blocks = true;
316  consensus.signet_challenge.assign(bin.begin(), bin.end());
317  consensus.nSubsidyHalvingInterval = 210000;
318  consensus.BIP16Exception = uint256{};
319  consensus.BIP34Height = 1;
320  consensus.BIP34Hash = uint256{};
321  consensus.BIP65Height = 1;
322  consensus.BIP66Height = 1;
323  consensus.CSVHeight = 1;
324  consensus.SegwitHeight = 1;
325  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
326  consensus.nPowTargetSpacing = 10 * 60;
327  consensus.fPowAllowMinDifficultyBlocks = false;
328  consensus.fPowNoRetargeting = false;
329  consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
330  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
331  consensus.MinBIP9WarningHeight = 0;
332  consensus.powLimit = uint256S("00000377ae000000000000000000000000000000000000000000000000000000");
333  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
334  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
335  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
336  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
337 
338  // Activation of Taproot (BIPs 340-342)
339  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
340  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
341  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
342  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
343 
344  // message start is defined as the first 4 bytes of the sha256d of the block script
345  CHashWriter h(SER_DISK, 0);
346  h << consensus.signet_challenge;
347  uint256 hash = h.GetHash();
348  memcpy(pchMessageStart, hash.begin(), 4);
349 
350  nDefaultPort = 38333;
351  nPruneAfterHeight = 1000;
352 
353  genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
354  consensus.hashGenesisBlock = genesis.GetHash();
355  assert(consensus.hashGenesisBlock == uint256S("0x00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"));
356  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
357 
358  vFixedSeeds.clear();
359 
360  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
361  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
362  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
363  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
364  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
365 
366  bech32_hrp = "tb";
367 
368  fDefaultConsistencyChecks = false;
369  fRequireStandard = true;
370  m_is_test_chain = true;
371  m_is_mockable_chain = false;
372  }
373 };
374 
378 class CRegTestParams : public CChainParams {
379 public:
380  explicit CRegTestParams(const ArgsManager& args) {
381  strNetworkID = CBaseChainParams::REGTEST;
382  consensus.signet_blocks = false;
383  consensus.signet_challenge.clear();
384  consensus.nSubsidyHalvingInterval = 150;
385  consensus.BIP16Exception = uint256();
386  consensus.BIP34Height = 500; // BIP34 activated on regtest (Used in functional tests)
387  consensus.BIP34Hash = uint256();
388  consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in functional tests)
389  consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in functional tests)
390  consensus.CSVHeight = 432; // CSV activated on regtest (Used in rpc activation tests)
391  consensus.SegwitHeight = 0; // SEGWIT is always activated on regtest unless overridden
392  consensus.MinBIP9WarningHeight = 0;
393  consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
394  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
395  consensus.nPowTargetSpacing = 10 * 60;
396  consensus.fPowAllowMinDifficultyBlocks = true;
397  consensus.fPowNoRetargeting = true;
398  consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
399  consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
400 
401  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
402  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
403  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
404  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
405 
406  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
407  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
408  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
409  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
410 
411  consensus.nMinimumChainWork = uint256{};
412  consensus.defaultAssumeValid = uint256{};
413 
414  pchMessageStart[0] = 0xfa;
415  pchMessageStart[1] = 0xbf;
416  pchMessageStart[2] = 0xb5;
417  pchMessageStart[3] = 0xda;
418  nDefaultPort = 18444;
419  nPruneAfterHeight = 1000;
420  m_assumed_blockchain_size = 0;
421  m_assumed_chain_state_size = 0;
422 
423  UpdateActivationParametersFromArgs(args);
424 
425  genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
426  consensus.hashGenesisBlock = genesis.GetHash();
427  assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
428  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
429 
430  vFixedSeeds.clear();
431  vSeeds.clear();
432 
433  fDefaultConsistencyChecks = true;
434  fRequireStandard = true;
435  m_is_test_chain = true;
436  m_is_mockable_chain = true;
437 
438  checkpointData = {
439  {
440  {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
441  }
442  };
443 
444  chainTxData = ChainTxData{
445  0,
446  0,
447  0
448  };
449 
450  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
451  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
452  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
453  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
454  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
455 
456  bech32_hrp = "bcrt";
457  }
458 
462  void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int min_activation_height)
463  {
464  consensus.vDeployments[d].nStartTime = nStartTime;
465  consensus.vDeployments[d].nTimeout = nTimeout;
466  consensus.vDeployments[d].min_activation_height = min_activation_height;
467  }
468  void UpdateActivationParametersFromArgs(const ArgsManager& args);
469 };
470 
471 void CRegTestParams::UpdateActivationParametersFromArgs(const ArgsManager& args)
472 {
473  if (args.IsArgSet("-segwitheight")) {
474  int64_t height = args.GetArg("-segwitheight", consensus.SegwitHeight);
475  if (height < -1 || height >= std::numeric_limits<int>::max()) {
476  throw std::runtime_error(strprintf("Activation height %ld for segwit is out of valid range. Use -1 to disable segwit.", height));
477  } else if (height == -1) {
478  LogPrintf("Segwit disabled for testing\n");
479  height = std::numeric_limits<int>::max();
480  }
481  consensus.SegwitHeight = static_cast<int>(height);
482  }
483 
484  if (!args.IsArgSet("-vbparams")) return;
485 
486  for (const std::string& strDeployment : args.GetArgs("-vbparams")) {
487  std::vector<std::string> vDeploymentParams;
488  boost::split(vDeploymentParams, strDeployment, boost::is_any_of(":"));
489  if (vDeploymentParams.size() < 3 || 4 < vDeploymentParams.size()) {
490  throw std::runtime_error("Version bits parameters malformed, expecting deployment:start:end[:min_activation_height]");
491  }
492  int64_t nStartTime, nTimeout;
493  int min_activation_height = 0;
494  if (!ParseInt64(vDeploymentParams[1], &nStartTime)) {
495  throw std::runtime_error(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1]));
496  }
497  if (!ParseInt64(vDeploymentParams[2], &nTimeout)) {
498  throw std::runtime_error(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2]));
499  }
500  if (vDeploymentParams.size() >= 4 && !ParseInt32(vDeploymentParams[3], &min_activation_height)) {
501  throw std::runtime_error(strprintf("Invalid min_activation_height (%s)", vDeploymentParams[3]));
502  }
503  bool found = false;
504  for (int j=0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) {
505  if (vDeploymentParams[0] == VersionBitsDeploymentInfo[j].name) {
506  UpdateVersionBitsParameters(Consensus::DeploymentPos(j), nStartTime, nTimeout, min_activation_height);
507  found = true;
508  LogPrintf("Setting version bits activation parameters for %s to start=%ld, timeout=%ld, min_activation_height=%d\n", vDeploymentParams[0], nStartTime, nTimeout, min_activation_height);
509  break;
510  }
511  }
512  if (!found) {
513  throw std::runtime_error(strprintf("Invalid deployment (%s)", vDeploymentParams[0]));
514  }
515  }
516 }
517 
518 static std::unique_ptr<const CChainParams> globalChainParams;
519 
520 const CChainParams &Params() {
521  assert(globalChainParams);
522  return *globalChainParams;
523 }
524 
525 std::unique_ptr<const CChainParams> CreateChainParams(const ArgsManager& args, const std::string& chain)
526 {
527  if (chain == CBaseChainParams::MAIN) {
528  return std::unique_ptr<CChainParams>(new CMainParams());
529  } else if (chain == CBaseChainParams::TESTNET) {
530  return std::unique_ptr<CChainParams>(new CTestNetParams());
531  } else if (chain == CBaseChainParams::SIGNET) {
532  return std::unique_ptr<CChainParams>(new SigNetParams(args));
533  } else if (chain == CBaseChainParams::REGTEST) {
534  return std::unique_ptr<CChainParams>(new CRegTestParams(args));
535  }
536  throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
537 }
538 
539 void SelectParams(const std::string& network)
540 {
541  SelectBaseParams(network);
542  globalChainParams = CreateChainParams(gArgs, network);
543 }
CBlockHeader::nNonce
uint32_t nNonce
Definition: block.h:29
Consensus::BIP9Deployment::NO_TIMEOUT
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:39
Consensus::BIP9Deployment::min_activation_height
int min_activation_height
If lock in occurs, delay activation until at least this block height.
Definition: params.h:36
Consensus::Params::BIP34Hash
uint256 BIP34Hash
Definition: params.h:63
CChainParams::nDefaultPort
int nDefaultPort
Definition: chainparams.h:99
base_blob::SetNull
void SetNull()
Definition: uint256.h:39
CMainParams
Main network.
Definition: chainparams.cpp:63
Consensus::Params::nPowTargetTimespan
int64_t nPowTargetTimespan
Definition: params.h:90
Consensus::Params::fPowNoRetargeting
bool fPowNoRetargeting
Definition: params.h:88
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static const std::string REGTEST
Definition: chainparamsbase.h:25
CBlock
Definition: block.h:62
CRegTestParams::UpdateActivationParametersFromArgs
void UpdateActivationParametersFromArgs(const ArgsManager &args)
Definition: chainparams.cpp:471
strprintf
#define strprintf
Format arguments and return the string or write to given std::ostream (see tinyformat::format doc for...
Definition: tinyformat.h:1164
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static void LogPrintf(const char *fmt, const Args &...args)
Definition: logging.h:166
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std::vector< CTxIn > vin
Definition: transaction.h:355
CChainParams::base58Prefixes
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:104
COIN
static const CAmount COIN
Definition: amount.h:14
ARRAYLEN
#define ARRAYLEN(array)
Utilities for converting data from/to strings.
Definition: strencodings.h:20
ParseHex
std::vector< unsigned char > ParseHex(const char *psz)
Definition: strencodings.cpp:84
MakeTransactionRef
static CTransactionRef MakeTransactionRef()
Definition: transaction.h:396
CRegTestParams::UpdateVersionBitsParameters
void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int min_activation_height)
Allows modifying the Version Bits regtest parameters.
Definition: chainparams.cpp:462
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bool fPowAllowMinDifficultyBlocks
Definition: params.h:87
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static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:45
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int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:67
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uint64_t m_assumed_chain_state_size
Definition: chainparams.h:102
pnSeed6_test
static SeedSpec6 pnSeed6_test[]
Definition: chainparamsseeds.h:1177
CChainParams
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system...
Definition: chainparams.h:52
CChainParams::bech32_hrp
std::string bech32_hrp
Definition: chainparams.h:105
CChainParams::genesis
CBlock genesis
Definition: chainparams.h:107
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unsigned char * begin()
Definition: uint256.h:58
Consensus::Params::CSVHeight
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:69
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uint32_t nTime
Definition: block.h:27
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Definition: chainparams.h:98
ParseInt64
bool ParseInt64(const std::string &str, int64_t *out)
Convert string to signed 64-bit integer with strict parse error feedback.
Definition: strencodings.cpp:310
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ChainTxData chainTxData
Definition: chainparams.h:114
CBaseChainParams::MAIN
static const std::string MAIN
Chain name strings.
Definition: chainparamsbase.h:22
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uint64_t m_assumed_blockchain_size
Definition: chainparams.h:101
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Definition: params.h:58
CAmount
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Amount in satoshis (Can be negative)
Definition: amount.h:12
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Return a vector of strings of the given argument.
Definition: system.cpp:362
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bool IsArgSet(const std::string &strArg) const
Return true if the given argument has been manually set.
Definition: system.cpp:371
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uint256 powLimit
Proof of work parameters.
Definition: params.h:86
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uint256 hashMerkleRoot
Definition: block.h:26
Consensus::DeploymentPos
DeploymentPos
Definition: params.h:14
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bool fRequireStandard
Definition: chainparams.h:110
name
const char * name
Definition: rest.cpp:41
SelectParams
void SelectParams(const std::string &network)
Sets the params returned by Params() to those for the given chain name.
Definition: chainparams.cpp:539
Consensus::Params::BIP34Height
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:62
CRegTestParams::CRegTestParams
CRegTestParams(const ArgsManager &args)
Definition: chainparams.cpp:380
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SigNetParams(const ArgsManager &args)
Definition: chainparams.cpp:271
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uint256 uint256S(const char *str)
Definition: uint256.h:137
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int64_t nStartTime
Start MedianTime for version bits miner confirmation.
Definition: params.h:29
CRegTestParams
Regression test.
Definition: chainparams.cpp:378
Consensus::Params::BIP16Exception
uint256 BIP16Exception
Definition: params.h:60
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int64_t nPowTargetSpacing
Definition: params.h:89
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uint256 hashPrevBlock
Definition: block.h:25
ChainTxData
Holds various statistics on transactions within a chain.
Definition: chainparams.h:39
ParseInt32
bool ParseInt32(const std::string &str, int32_t *out)
Convert string to signed 32-bit integer with strict parse error feedback.
Definition: strencodings.cpp:294
CChainParams::vSeeds
std::vector< std::string > vSeeds
Definition: chainparams.h:103
Consensus::Params::signet_blocks
bool signet_blocks
If true, witness commitments contain a payload equal to a Bitcoin Script solution to the signet chall...
Definition: params.h:101
globalChainParams
static std::unique_ptr< const CChainParams > globalChainParams
Definition: chainparams.cpp:518
Consensus::BIP9Deployment::NEVER_ACTIVE
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition: params.h:50
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uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition: merkle.cpp:65
CChainParams::m_is_mockable_chain
bool m_is_mockable_chain
Definition: chainparams.h:112
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Definition: params.h:83
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std::vector< CTxOut > vout
Definition: transaction.h:356
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int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:65
CTestNetParams
Testnet (v3)
Definition: chainparams.cpp:178
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uint256 GetHash()
Compute the double-SHA256 hash of all data written to this object.
Definition: hash.h:122
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int64_t nTimeout
Timeout/expiry MedianTime for the deployment attempt.
Definition: params.h:31
uint256
256-bit opaque blob.
Definition: uint256.h:124
Consensus::Params::nMinimumChainWork
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:93
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Definition: block.h:66
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const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_BITS_DEPLOYMENTS]
Definition: versionbitsinfo.cpp:9
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uint256 GetHash() const
Definition: block.cpp:11
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std::vector< SeedSpec6 > vFixedSeeds
Definition: chainparams.h:108
Consensus::Params::defaultAssumeValid
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:95
Params
const CChainParams & Params()
Return the currently selected parameters.
Definition: chainparams.cpp:520
CScript
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:404
memcpy
void * memcpy(void *a, const void *b, size_t c)
Definition: glibc_compat.cpp:14
CChainParams::consensus
Consensus::Params consensus
Definition: chainparams.h:97
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Return string argument or default value.
Definition: system.cpp:467
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std::vector< uint8_t > signet_challenge
Definition: params.h:102
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std::string strNetworkID
Definition: chainparams.h:106
gArgs
ArgsManager gArgs
Definition: system.cpp:77
Consensus::Params::MinBIP9WarningHeight
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition: params.h:76
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static const std::string TESTNET
Definition: chainparamsbase.h:23
CMutableTransaction
A mutable version of CTransaction.
Definition: transaction.h:353
CHashWriter
A writer stream (for serialization) that computes a 256-bit hash.
Definition: hash.h:100
Consensus::Params::nRuleChangeActivationThreshold
uint32_t nRuleChangeActivationThreshold
Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period...
Definition: params.h:82
CChainParams::nPruneAfterHeight
uint64_t nPruneAfterHeight
Definition: chainparams.h:100
Consensus::Params::SegwitHeight
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:73
CChainParams::m_is_test_chain
bool m_is_test_chain
Definition: chainparams.h:111
Consensus::BIP9Deployment::bit
int bit
Bit position to select the particular bit in nVersion.
Definition: params.h:27
CChainParams::checkpointData
CCheckpointData checkpointData
Definition: chainparams.h:113
SelectBaseParams
void SelectBaseParams(const std::string &chain)
Sets the params returned by Params() to those for the given network.
Definition: chainparamsbase.cpp:58
pnSeed6_main
static SeedSpec6 pnSeed6_main[]
List of fixed seed nodes for the bitcoin network AUTOGENERATED by contrib/seeds/generate-seeds.py.
Definition: chainparamsseeds.h:10
CBlockHeader::nVersion
int32_t nVersion
Definition: block.h:24
CBaseChainParams::SIGNET
static const std::string SIGNET
Definition: chainparamsbase.h:24
Consensus::Params::hashGenesisBlock
uint256 hashGenesisBlock
Definition: params.h:57
CChainParams::fDefaultConsistencyChecks
bool fDefaultConsistencyChecks
Definition: chainparams.h:109
Consensus::Params::vDeployments
BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS]
Definition: params.h:84
CBlockHeader::nBits
uint32_t nBits
Definition: block.h:28
CreateGenesisBlock
static CBlock CreateGenesisBlock(const char *pszTimestamp, const CScript &genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount &genesisReward)
Definition: chainparams.cpp:21
CreateChainParams
std::unique_ptr< const CChainParams > CreateChainParams(const ArgsManager &args, const std::string &chain)
Creates and returns a std::unique_ptr of the chosen chain.
Definition: chainparams.cpp:525
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