Bitcoin Core  0.18.99
P2P Digital Currency
chainparams.cpp
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1 // Copyright (c) 2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2018 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 <tinyformat.h>
11 #include <util/system.h>
12 #include <util/strencodings.h>
13 #include <versionbitsinfo.h>
14 
15 #include <assert.h>
16 
17 #include <boost/algorithm/string/classification.hpp>
18 #include <boost/algorithm/string/split.hpp>
19 
20 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
21 {
22  CMutableTransaction txNew;
23  txNew.nVersion = 1;
24  txNew.vin.resize(1);
25  txNew.vout.resize(1);
26  txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
27  txNew.vout[0].nValue = genesisReward;
28  txNew.vout[0].scriptPubKey = genesisOutputScript;
29 
30  CBlock genesis;
31  genesis.nTime = nTime;
32  genesis.nBits = nBits;
33  genesis.nNonce = nNonce;
34  genesis.nVersion = nVersion;
35  genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
36  genesis.hashPrevBlock.SetNull();
37  genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
38  return genesis;
39 }
40 
52 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
53 {
54  const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
55  const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
56  return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
57 }
58 
62 class CMainParams : public CChainParams {
63 public:
65  strNetworkID = "main";
67  consensus.BIP16Exception = uint256S("0x00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22");
68  consensus.BIP34Height = 227931;
69  consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
70  consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
71  consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
72  consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
73  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
74  consensus.nPowTargetSpacing = 10 * 60;
77  consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
78  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
80  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
81  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
82 
83  // Deployment of BIP68, BIP112, and BIP113.
85  consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
86  consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
87 
88  // Deployment of SegWit (BIP141, BIP143, and BIP147)
90  consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
91  consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.
92 
93  // The best chain should have at least this much work.
94  consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000051dc8b82f450202ecb3d471");
95 
96  // By default assume that the signatures in ancestors of this block are valid.
97  consensus.defaultAssumeValid = uint256S("0x0000000000000000000f1c54590ee18d15ec70e68c8cd4cfbadb1b4f11697eee"); //563378
98 
104  pchMessageStart[0] = 0xf9;
105  pchMessageStart[1] = 0xbe;
106  pchMessageStart[2] = 0xb4;
107  pchMessageStart[3] = 0xd9;
108  nDefaultPort = 8333;
109  nPruneAfterHeight = 100000;
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 a oneshot 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 
132  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
133  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
134  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
135  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
136  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
137 
138  bech32_hrp = "bc";
139 
140  vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
141 
143  fRequireStandard = true;
144  fMineBlocksOnDemand = 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 0000000000000000000f1c54590ee18d15ec70e68c8cd4cfbadb1b4f11697eee
166  /* nTime */ 1550374134,
167  /* nTxCount */ 383732546,
168  /* dTxRate */ 3.685496590998308
169  };
170 
171  /* disable fallback fee on mainnet */
172  m_fallback_fee_enabled = false;
173  }
174 };
175 
179 class CTestNetParams : public CChainParams {
180 public:
182  strNetworkID = "test";
184  consensus.BIP16Exception = uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105");
185  consensus.BIP34Height = 21111;
186  consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
187  consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
188  consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
189  consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
190  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
191  consensus.nPowTargetSpacing = 10 * 60;
194  consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
195  consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
197  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
198  consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
199 
200  // Deployment of BIP68, BIP112, and BIP113.
202  consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
203  consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
204 
205  // Deployment of SegWit (BIP141, BIP143, and BIP147)
207  consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
208  consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017
209 
210  // The best chain should have at least this much work.
211  consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000007dbe94253893cbd463");
212 
213  // By default assume that the signatures in ancestors of this block are valid.
214  consensus.defaultAssumeValid = uint256S("0x0000000000000037a8cd3e06cd5edbfe9dd1dbcc5dacab279376ef7cfc2b4c75"); //1354312
215 
216  pchMessageStart[0] = 0x0b;
217  pchMessageStart[1] = 0x11;
218  pchMessageStart[2] = 0x09;
219  pchMessageStart[3] = 0x07;
220  nDefaultPort = 18333;
221  nPruneAfterHeight = 1000;
224 
225  genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
226  consensus.hashGenesisBlock = genesis.GetHash();
227  assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
228  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
229 
230  vFixedSeeds.clear();
231  vSeeds.clear();
232  // nodes with support for servicebits filtering should be at the top
233  vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch");
234  vSeeds.emplace_back("seed.tbtc.petertodd.org");
235  vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl");
236  vSeeds.emplace_back("testnet-seed.bluematt.me"); // Just a static list of stable node(s), only supports x9
237 
238  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
239  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
240  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
241  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
242  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
243 
244  bech32_hrp = "tb";
245 
246  vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
247 
249  fRequireStandard = false;
250  fMineBlocksOnDemand = false;
251 
252 
253  checkpointData = {
254  {
255  {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
256  }
257  };
258 
260  // Data from rpc: getchaintxstats 4096 0000000000000037a8cd3e06cd5edbfe9dd1dbcc5dacab279376ef7cfc2b4c75
261  /* nTime */ 1531929919,
262  /* nTxCount */ 19438708,
263  /* dTxRate */ 0.626
264  };
265 
266  /* enable fallback fee on testnet */
267  m_fallback_fee_enabled = true;
268  }
269 };
270 
274 class CRegTestParams : public CChainParams {
275 public:
276  explicit CRegTestParams(const ArgsManager& args) {
277  strNetworkID = "regtest";
280  consensus.BIP34Height = 500; // BIP34 activated on regtest (Used in functional tests)
282  consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in functional tests)
283  consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in functional tests)
284  consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
285  consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
286  consensus.nPowTargetSpacing = 10 * 60;
289  consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
290  consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
300 
301  // The best chain should have at least this much work.
303 
304  // By default assume that the signatures in ancestors of this block are valid.
306 
307  pchMessageStart[0] = 0xfa;
308  pchMessageStart[1] = 0xbf;
309  pchMessageStart[2] = 0xb5;
310  pchMessageStart[3] = 0xda;
311  nDefaultPort = 18444;
312  nPruneAfterHeight = 1000;
315 
316  UpdateVersionBitsParametersFromArgs(args);
317 
318  genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
319  consensus.hashGenesisBlock = genesis.GetHash();
320  assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
321  assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
322 
323  vFixedSeeds.clear();
324  vSeeds.clear();
325 
327  fRequireStandard = false;
328  fMineBlocksOnDemand = true;
329 
330  checkpointData = {
331  {
332  {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
333  }
334  };
335 
337  0,
338  0,
339  0
340  };
341 
342  base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
343  base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
344  base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
345  base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
346  base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
347 
348  bech32_hrp = "bcrt";
349 
350  /* enable fallback fee on regtest */
351  m_fallback_fee_enabled = true;
352  }
353 
357  void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
358  {
359  consensus.vDeployments[d].nStartTime = nStartTime;
360  consensus.vDeployments[d].nTimeout = nTimeout;
361  }
362  void UpdateVersionBitsParametersFromArgs(const ArgsManager& args);
363 };
364 
366 {
367  if (!args.IsArgSet("-vbparams")) return;
368 
369  for (const std::string& strDeployment : args.GetArgs("-vbparams")) {
370  std::vector<std::string> vDeploymentParams;
371  boost::split(vDeploymentParams, strDeployment, boost::is_any_of(":"));
372  if (vDeploymentParams.size() != 3) {
373  throw std::runtime_error("Version bits parameters malformed, expecting deployment:start:end");
374  }
375  int64_t nStartTime, nTimeout;
376  if (!ParseInt64(vDeploymentParams[1], &nStartTime)) {
377  throw std::runtime_error(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1]));
378  }
379  if (!ParseInt64(vDeploymentParams[2], &nTimeout)) {
380  throw std::runtime_error(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2]));
381  }
382  bool found = false;
383  for (int j=0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) {
384  if (vDeploymentParams[0] == VersionBitsDeploymentInfo[j].name) {
385  UpdateVersionBitsParameters(Consensus::DeploymentPos(j), nStartTime, nTimeout);
386  found = true;
387  LogPrintf("Setting version bits activation parameters for %s to start=%ld, timeout=%ld\n", vDeploymentParams[0], nStartTime, nTimeout);
388  break;
389  }
390  }
391  if (!found) {
392  throw std::runtime_error(strprintf("Invalid deployment (%s)", vDeploymentParams[0]));
393  }
394  }
395 }
396 
397 static std::unique_ptr<const CChainParams> globalChainParams;
398 
400  assert(globalChainParams);
401  return *globalChainParams;
402 }
403 
404 std::unique_ptr<const CChainParams> CreateChainParams(const std::string& chain)
405 {
406  if (chain == CBaseChainParams::MAIN)
407  return std::unique_ptr<CChainParams>(new CMainParams());
408  else if (chain == CBaseChainParams::TESTNET)
409  return std::unique_ptr<CChainParams>(new CTestNetParams());
410  else if (chain == CBaseChainParams::REGTEST)
411  return std::unique_ptr<CChainParams>(new CRegTestParams(gArgs));
412  throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
413 }
414 
415 void SelectParams(const std::string& network)
416 {
417  SelectBaseParams(network);
418  globalChainParams = CreateChainParams(network);
419 }
uint32_t nNonce
Definition: block.h:29
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:37
std::unique_ptr< const CChainParams > CreateChainParams(const std::string &chain)
Creates and returns a std::unique_ptr<CChainParams> of the chosen chain.
void UpdateVersionBitsParametersFromArgs(const ArgsManager &args)
bool fMineBlocksOnDemand
Definition: chainparams.h:104
bool IsArgSet(const std::string &strArg) const
Return true if the given argument has been manually set.
Definition: system.cpp:472
uint256 BIP34Hash
Definition: params.h:56
int nDefaultPort
Definition: chainparams.h:92
void SetNull()
Definition: uint256.h:39
Main network.
Definition: chainparams.cpp:62
int64_t nPowTargetTimespan
Definition: params.h:74
bool fPowNoRetargeting
Definition: params.h:72
static const std::string REGTEST
Definition: block.h:72
#define strprintf
Definition: tinyformat.h:1066
std::vector< CTxIn > vin
Definition: transaction.h:368
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:97
#define ARRAYLEN(array)
Utilities for converting data from/to strings.
Definition: strencodings.h:19
std::vector< unsigned char > ParseHex(const char *psz)
bool fPowAllowMinDifficultyBlocks
Definition: params.h:71
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:43
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:60
uint64_t m_assumed_chain_state_size
Definition: chainparams.h:95
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system...
Definition: chainparams.h:47
std::string bech32_hrp
Definition: chainparams.h:98
uint32_t nTime
Definition: block.h:27
CMessageHeader::MessageStartChars pchMessageStart
Definition: chainparams.h:91
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:106
static const std::string MAIN
BIP70 chain name strings (main, test or regtest)
uint64_t m_assumed_blockchain_size
Definition: chainparams.h:94
int nSubsidyHalvingInterval
Definition: params.h:51
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
uint256 powLimit
Proof of work parameters.
Definition: params.h:70
bool m_fallback_fee_enabled
Definition: chainparams.h:107
uint256 hashMerkleRoot
Definition: block.h:26
DeploymentPos
Definition: params.h:16
bool fRequireStandard
Definition: chainparams.h:103
const char * name
Definition: rest.cpp:38
void SelectParams(const std::string &network)
Sets the params returned by Params() to those for the given BIP70 chain name.
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:55
CRegTestParams(const ArgsManager &args)
uint256 uint256S(const char *str)
Definition: uint256.h:131
int64_t nStartTime
Start MedianTime for version bits miner confirmation.
Definition: params.h:32
Regression test.
uint256 BIP16Exception
Definition: params.h:53
int64_t nPowTargetSpacing
Definition: params.h:73
uint256 hashPrevBlock
Definition: block.h:25
Holds various statistics on transactions within a chain.
Definition: chainparams.h:34
std::vector< std::string > vSeeds
Definition: chainparams.h:96
void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
Allows modifying the Version Bits regtest parameters.
uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition: merkle.cpp:66
uint32_t nMinerConfirmationWindow
Definition: params.h:67
std::vector< CTxOut > vout
Definition: transaction.h:369
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:58
Testnet (v3)
uint256 GetHash() const
Definition: block.cpp:13
int64_t nTimeout
Timeout/expiry MedianTime for the deployment attempt.
Definition: params.h:34
256-bit opaque blob.
Definition: uint256.h:121
uint256 nMinimumChainWork
Definition: params.h:76
std::vector< CTransactionRef > vtx
Definition: block.h:76
const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_BITS_DEPLOYMENTS]
std::vector< SeedSpec6 > vFixedSeeds
Definition: chainparams.h:101
uint256 defaultAssumeValid
Definition: params.h:77
const CChainParams & Params()
Return the currently selected parameters.
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:390
Consensus::Params consensus
Definition: chainparams.h:90
std::string strNetworkID
Definition: chainparams.h:99
ArgsManager gArgs
Definition: system.cpp:74
static const std::string TESTNET
A mutable version of CTransaction.
Definition: transaction.h:366
uint32_t nRuleChangeActivationThreshold
Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period...
Definition: params.h:66
uint64_t nPruneAfterHeight
Definition: chainparams.h:93
int bit
Bit position to select the particular bit in nVersion.
Definition: params.h:30
std::vector< std::string > GetArgs(const std::string &strArg) const
Return a vector of strings of the given argument.
Definition: system.cpp:453
CCheckpointData checkpointData
Definition: chainparams.h:105
void SelectBaseParams(const std::string &chain)
Sets the params returned by Params() to those for the given network.
int32_t nVersion
Definition: block.h:24
uint256 hashGenesisBlock
Definition: params.h:50
bool fDefaultConsistencyChecks
Definition: chainparams.h:102
BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS]
Definition: params.h:68
uint32_t nBits
Definition: block.h:28