Bitcoin Core  0.20.99
P2P Digital Currency
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:
67  consensus.signet_blocks = false;
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;
83  consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
84  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
86  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
87  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
88 
89  // Deployment of Taproot (BIPs 340-342)
91  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1199145601; // January 1, 2008
92  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1230767999; // December 31, 2008
93 
94  consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000e1ab5ec9348e9f4b8eb8154");
95  consensus.defaultAssumeValid = uint256S("0x0000000000000000000f2adce67e49b0b6bdeb9de8b7c3d7e93b21e7fc1e819d"); // 623950
96 
102  pchMessageStart[0] = 0xf9;
103  pchMessageStart[1] = 0xbe;
104  pchMessageStart[2] = 0xb4;
105  pchMessageStart[3] = 0xd9;
106  nDefaultPort = 8333;
107  nPruneAfterHeight = 100000;
110 
111  genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
113  assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
114  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
115 
116  // Note that of those which support the service bits prefix, most only support a subset of
117  // possible options.
118  // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
119  // service bits we want, but we should get them updated to support all service bits wanted by any
120  // release ASAP to avoid it where possible.
121  vSeeds.emplace_back("seed.bitcoin.sipa.be"); // Pieter Wuille, only supports x1, x5, x9, and xd
122  vSeeds.emplace_back("dnsseed.bluematt.me"); // Matt Corallo, only supports x9
123  vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org"); // Luke Dashjr
124  vSeeds.emplace_back("seed.bitcoinstats.com"); // Christian Decker, supports x1 - xf
125  vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch"); // Jonas Schnelli, only supports x1, x5, x9, and xd
126  vSeeds.emplace_back("seed.btc.petertodd.org"); // Peter Todd, only supports x1, x5, x9, and xd
127  vSeeds.emplace_back("seed.bitcoin.sprovoost.nl"); // Sjors Provoost
128  vSeeds.emplace_back("dnsseed.emzy.de"); // Stephan Oeste
129  vSeeds.emplace_back("seed.bitcoin.wiz.biz"); // Jason Maurice
130 
131  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
132  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
133  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
134  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
135  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
136 
137  bech32_hrp = "bc";
138 
139  vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
140 
142  fRequireStandard = true;
143  m_is_test_chain = false;
144  m_is_mockable_chain = false;
145 
146  checkpointData = {
147  {
148  { 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
149  { 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
150  { 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
151  {105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
152  {134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
153  {168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
154  {193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
155  {210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
156  {216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
157  {225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
158  {250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
159  {279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
160  {295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")},
161  }
162  };
163 
165  // Data from RPC: getchaintxstats 4096 0000000000000000000f2adce67e49b0b6bdeb9de8b7c3d7e93b21e7fc1e819d
166  /* nTime */ 1585764811,
167  /* nTxCount */ 517186863,
168  /* dTxRate */ 3.305709665792344,
169  };
170  }
171 };
172 
176 class CTestNetParams : public CChainParams {
177 public:
180  consensus.signet_blocks = false;
181  consensus.signet_challenge.clear();
183  consensus.BIP16Exception = uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105");
184  consensus.BIP34Height = 21111;
185  consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
186  consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
187  consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
188  consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
189  consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
190  consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
191  consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
192  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
193  consensus.nPowTargetSpacing = 10 * 60;
196  consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
197  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
199  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
200  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
201 
202  // Deployment of Taproot (BIPs 340-342)
204  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1199145601; // January 1, 2008
205  consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1230767999; // December 31, 2008
206 
207  consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000001495c1d5a01e2af8a23");
208  consensus.defaultAssumeValid = uint256S("0x000000000000056c49030c174179b52a928c870e6e8a822c75973b7970cfbd01"); // 1692000
209 
210  pchMessageStart[0] = 0x0b;
211  pchMessageStart[1] = 0x11;
212  pchMessageStart[2] = 0x09;
213  pchMessageStart[3] = 0x07;
214  nDefaultPort = 18333;
215  nPruneAfterHeight = 1000;
218 
219  genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
221  assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
222  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
223 
224  vFixedSeeds.clear();
225  vSeeds.clear();
226  // nodes with support for servicebits filtering should be at the top
227  vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch");
228  vSeeds.emplace_back("seed.tbtc.petertodd.org");
229  vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl");
230  vSeeds.emplace_back("testnet-seed.bluematt.me"); // Just a static list of stable node(s), only supports x9
231 
232  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
233  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
234  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
235  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
236  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
237 
238  bech32_hrp = "tb";
239 
240  vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
241 
243  fRequireStandard = false;
244  m_is_test_chain = true;
245  m_is_mockable_chain = false;
246 
247  checkpointData = {
248  {
249  {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
250  }
251  };
252 
254  // Data from RPC: getchaintxstats 4096 000000000000056c49030c174179b52a928c870e6e8a822c75973b7970cfbd01
255  /* nTime */ 1585561140,
256  /* nTxCount */ 13483,
257  /* dTxRate */ 0.08523187013249722,
258  };
259  }
260 };
261 
265 class SigNetParams : public CChainParams {
266 public:
267  explicit SigNetParams(const ArgsManager& args) {
268  std::vector<uint8_t> bin;
269  vSeeds.clear();
270 
271  if (!args.IsArgSet("-signetchallenge")) {
272  bin = ParseHex("512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae");
273  vSeeds.emplace_back("178.128.221.177");
274  vSeeds.emplace_back("2a01:7c8:d005:390::5");
275  vSeeds.emplace_back("ntv3mtqw5wt63red.onion:38333");
276 
277  consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000000d145533ce");
278  consensus.defaultAssumeValid = uint256S("0x00000128807d9175c494e24d805fc7854f7d79aa965cbb128342ad8b70cecfa5"); // 5348
282  // Data from RPC: getchaintxstats 4096 00000128807d9175c494e24d805fc7854f7d79aa965cbb128342ad8b70cecfa5
283  /* nTime */ 1601382000,
284  /* nTxCount */ 5435,
285  /* dTxRate */ 0.001898346323372538,
286  };
287  } else {
288  const auto signet_challenge = args.GetArgs("-signetchallenge");
289  if (signet_challenge.size() != 1) {
290  throw std::runtime_error(strprintf("%s: -signetchallenge cannot be multiple values.", __func__));
291  }
292  bin = ParseHex(signet_challenge[0]);
293 
299  0,
300  0,
301  0,
302  };
303  LogPrintf("Signet with challenge %s\n", signet_challenge[0]);
304  }
305 
306  if (args.IsArgSet("-signetseednode")) {
307  vSeeds = args.GetArgs("-signetseednode");
308  }
309 
311  consensus.signet_blocks = true;
312  consensus.signet_challenge.assign(bin.begin(), bin.end());
319  consensus.CSVHeight = 1;
321  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
322  consensus.nPowTargetSpacing = 10 * 60;
328  consensus.powLimit = uint256S("00000377ae000000000000000000000000000000000000000000000000000000");
330  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
331  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
332 
333  // Activation of Taproot (BIPs 340-342)
337 
338  // message start is defined as the first 4 bytes of the sha256d of the block script
339  CHashWriter h(SER_DISK, 0);
341  uint256 hash = h.GetHash();
342  memcpy(pchMessageStart, hash.begin(), 4);
343 
344  nDefaultPort = 38333;
345  nPruneAfterHeight = 1000;
346 
347  genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
349  assert(consensus.hashGenesisBlock == uint256S("0x00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"));
350  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
351 
352  vFixedSeeds.clear();
353 
354  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
355  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
356  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
357  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
358  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
359 
360  bech32_hrp = "tb";
361 
363  fRequireStandard = true;
364  m_is_test_chain = true;
365  m_is_mockable_chain = false;
366  }
367 };
368 
372 class CRegTestParams : public CChainParams {
373 public:
374  explicit CRegTestParams(const ArgsManager& args) {
376  consensus.signet_blocks = false;
377  consensus.signet_challenge.clear();
380  consensus.BIP34Height = 500; // BIP34 activated on regtest (Used in functional tests)
382  consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in functional tests)
383  consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in functional tests)
384  consensus.CSVHeight = 432; // CSV activated on regtest (Used in rpc activation tests)
385  consensus.SegwitHeight = 0; // SEGWIT is always activated on regtest unless overridden
387  consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
388  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
389  consensus.nPowTargetSpacing = 10 * 60;
392  consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
393  consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
400 
403 
404  pchMessageStart[0] = 0xfa;
405  pchMessageStart[1] = 0xbf;
406  pchMessageStart[2] = 0xb5;
407  pchMessageStart[3] = 0xda;
408  nDefaultPort = 18444;
409  nPruneAfterHeight = 1000;
412 
413  UpdateActivationParametersFromArgs(args);
414 
415  genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
417  assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
418  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
419 
420  vFixedSeeds.clear();
421  vSeeds.clear();
422 
424  fRequireStandard = true;
425  m_is_test_chain = true;
426  m_is_mockable_chain = true;
427 
428  checkpointData = {
429  {
430  {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
431  }
432  };
433 
435  0,
436  0,
437  0
438  };
439 
440  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
441  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
442  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
443  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
444  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
445 
446  bech32_hrp = "bcrt";
447  }
448 
452  void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
453  {
454  consensus.vDeployments[d].nStartTime = nStartTime;
455  consensus.vDeployments[d].nTimeout = nTimeout;
456  }
457  void UpdateActivationParametersFromArgs(const ArgsManager& args);
458 };
459 
461 {
462  if (args.IsArgSet("-segwitheight")) {
463  int64_t height = args.GetArg("-segwitheight", consensus.SegwitHeight);
464  if (height < -1 || height >= std::numeric_limits<int>::max()) {
465  throw std::runtime_error(strprintf("Activation height %ld for segwit is out of valid range. Use -1 to disable segwit.", height));
466  } else if (height == -1) {
467  LogPrintf("Segwit disabled for testing\n");
468  height = std::numeric_limits<int>::max();
469  }
470  consensus.SegwitHeight = static_cast<int>(height);
471  }
472 
473  if (!args.IsArgSet("-vbparams")) return;
474 
475  for (const std::string& strDeployment : args.GetArgs("-vbparams")) {
476  std::vector<std::string> vDeploymentParams;
477  boost::split(vDeploymentParams, strDeployment, boost::is_any_of(":"));
478  if (vDeploymentParams.size() != 3) {
479  throw std::runtime_error("Version bits parameters malformed, expecting deployment:start:end");
480  }
481  int64_t nStartTime, nTimeout;
482  if (!ParseInt64(vDeploymentParams[1], &nStartTime)) {
483  throw std::runtime_error(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1]));
484  }
485  if (!ParseInt64(vDeploymentParams[2], &nTimeout)) {
486  throw std::runtime_error(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2]));
487  }
488  bool found = false;
489  for (int j=0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) {
490  if (vDeploymentParams[0] == VersionBitsDeploymentInfo[j].name) {
491  UpdateVersionBitsParameters(Consensus::DeploymentPos(j), nStartTime, nTimeout);
492  found = true;
493  LogPrintf("Setting version bits activation parameters for %s to start=%ld, timeout=%ld\n", vDeploymentParams[0], nStartTime, nTimeout);
494  break;
495  }
496  }
497  if (!found) {
498  throw std::runtime_error(strprintf("Invalid deployment (%s)", vDeploymentParams[0]));
499  }
500  }
501 }
502 
503 static std::unique_ptr<const CChainParams> globalChainParams;
504 
506  assert(globalChainParams);
507  return *globalChainParams;
508 }
509 
510 std::unique_ptr<const CChainParams> CreateChainParams(const ArgsManager& args, const std::string& chain)
511 {
512  if (chain == CBaseChainParams::MAIN) {
513  return std::unique_ptr<CChainParams>(new CMainParams());
514  } else if (chain == CBaseChainParams::TESTNET) {
515  return std::unique_ptr<CChainParams>(new CTestNetParams());
516  } else if (chain == CBaseChainParams::SIGNET) {
517  return std::unique_ptr<CChainParams>(new SigNetParams(args));
518  } else if (chain == CBaseChainParams::REGTEST) {
519  return std::unique_ptr<CChainParams>(new CRegTestParams(args));
520  }
521  throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
522 }
523 
524 void SelectParams(const std::string& network)
525 {
526  SelectBaseParams(network);
528 }
uint32_t nNonce
Definition: block.h:29
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:34
bool IsArgSet(const std::string &strArg) const
Return true if the given argument has been manually set.
Definition: system.cpp:370
uint256 BIP34Hash
Definition: params.h:53
int nDefaultPort
Definition: chainparams.h:99
void SetNull()
Definition: uint256.h:39
Main network.
Definition: chainparams.cpp:63
int64_t nPowTargetTimespan
Definition: params.h:80
bool fPowNoRetargeting
Definition: params.h:78
static const std::string REGTEST
Definition: block.h:62
void UpdateActivationParametersFromArgs(const ArgsManager &args)
#define strprintf
Format arguments and return the string or write to given std::ostream (see tinyformat::format doc for...
Definition: tinyformat.h:1164
std::vector< CTxIn > vin
Definition: transaction.h:355
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:104
static const CAmount COIN
Definition: amount.h:14
#define ARRAYLEN(array)
Utilities for converting data from/to strings.
Definition: strencodings.h:20
std::vector< unsigned char > ParseHex(const char *psz)
static CTransactionRef MakeTransactionRef()
Definition: transaction.h:396
bool fPowAllowMinDifficultyBlocks
Definition: params.h:77
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:40
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:57
uint64_t m_assumed_chain_state_size
Definition: chainparams.h:102
static void LogPrintf(const char *fmt, const Args &... args)
Definition: logging.h:166
static SeedSpec6 pnSeed6_test[]
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system...
Definition: chainparams.h:52
std::string bech32_hrp
Definition: chainparams.h:105
CBlock genesis
Definition: chainparams.h:107
unsigned char * begin()
Definition: uint256.h:58
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:59
uint32_t nTime
Definition: block.h:27
CMessageHeader::MessageStartChars pchMessageStart
Definition: chainparams.h:98
bool ParseInt64(const std::string &str, int64_t *out)
Convert string to signed 64-bit integer with strict parse error feedback.
ChainTxData chainTxData
Definition: chainparams.h:114
static const std::string MAIN
Chain name strings.
uint64_t m_assumed_blockchain_size
Definition: chainparams.h:101
int nSubsidyHalvingInterval
Definition: params.h:48
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
uint256 powLimit
Proof of work parameters.
Definition: params.h:76
uint256 hashMerkleRoot
Definition: block.h:26
DeploymentPos
Definition: params.h:14
bool fRequireStandard
Definition: chainparams.h:110
const char * name
Definition: rest.cpp:41
void SelectParams(const std::string &network)
Sets the params returned by Params() to those for the given chain name.
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:52
CRegTestParams(const ArgsManager &args)
SigNetParams(const ArgsManager &args)
uint256 uint256S(const char *str)
Definition: uint256.h:137
int64_t nStartTime
Start MedianTime for version bits miner confirmation.
Definition: params.h:29
Regression test.
uint256 BIP16Exception
Definition: params.h:50
int64_t nPowTargetSpacing
Definition: params.h:79
uint256 hashPrevBlock
Definition: block.h:25
Holds various statistics on transactions within a chain.
Definition: chainparams.h:39
std::vector< std::string > vSeeds
Definition: chainparams.h:103
void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
Allows modifying the Version Bits regtest parameters.
bool signet_blocks
If true, witness commitments contain a payload equal to a Bitcoin Script solution to the signet chall...
Definition: params.h:91
static std::unique_ptr< const CChainParams > globalChainParams
uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition: merkle.cpp:65
bool m_is_mockable_chain
Definition: chainparams.h:112
uint32_t nMinerConfirmationWindow
Definition: params.h:73
std::vector< CTxOut > vout
Definition: transaction.h:356
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:55
Testnet (v3)
uint256 GetHash()
Compute the double-SHA256 hash of all data written to this object.
Definition: hash.h:122
uint256 GetHash() const
Definition: block.cpp:11
int64_t nTimeout
Timeout/expiry MedianTime for the deployment attempt.
Definition: params.h:31
256-bit opaque blob.
Definition: uint256.h:124
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:83
std::vector< CTransactionRef > vtx
Definition: block.h:66
const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_BITS_DEPLOYMENTS]
std::vector< SeedSpec6 > vFixedSeeds
Definition: chainparams.h:108
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:85
const CChainParams & Params()
Return the currently selected parameters.
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:404
void * memcpy(void *a, const void *b, size_t c)
Consensus::Params consensus
Definition: chainparams.h:97
std::string GetArg(const std::string &strArg, const std::string &strDefault) const
Return string argument or default value.
Definition: system.cpp:466
std::vector< uint8_t > signet_challenge
Definition: params.h:92
std::string strNetworkID
Definition: chainparams.h:106
ArgsManager gArgs
Definition: system.cpp:76
int MinBIP9WarningHeight
Don&#39;t warn about unknown BIP 9 activations below this height.
Definition: params.h:66
static const std::string TESTNET
A mutable version of CTransaction.
Definition: transaction.h:353
A writer stream (for serialization) that computes a 256-bit hash.
Definition: hash.h:100
uint32_t nRuleChangeActivationThreshold
Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period...
Definition: params.h:72
uint64_t nPruneAfterHeight
Definition: chainparams.h:100
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:63
bool m_is_test_chain
Definition: chainparams.h:111
int bit
Bit position to select the particular bit in nVersion.
Definition: params.h:27
std::vector< std::string > GetArgs(const std::string &strArg) const
Return a vector of strings of the given argument.
Definition: system.cpp:361
CCheckpointData checkpointData
Definition: chainparams.h:113
void SelectBaseParams(const std::string &chain)
Sets the params returned by Params() to those for the given network.
static SeedSpec6 pnSeed6_main[]
List of fixed seed nodes for the bitcoin network AUTOGENERATED by contrib/seeds/generate-seeds.py.
int32_t nVersion
Definition: block.h:24
static const std::string SIGNET
uint256 hashGenesisBlock
Definition: params.h:47
bool fDefaultConsistencyChecks
Definition: chainparams.h:109
BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS]
Definition: params.h:74
uint32_t nBits
Definition: block.h:28
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
std::unique_ptr< const CChainParams > CreateChainParams(const ArgsManager &args, const std::string &chain)
Creates and returns a std::unique_ptr<CChainParams> of the chosen chain.