Bitcoin Core 22.99.0
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 <deploymentinfo.h>
11#include <hash.h> // for signet block challenge hash
12#include <util/system.h>
13
14#include <assert.h>
15
16#include <boost/algorithm/string/classification.hpp>
17#include <boost/algorithm/string/split.hpp>
18
19static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
20{
21 CMutableTransaction txNew;
22 txNew.nVersion = 1;
23 txNew.vin.resize(1);
24 txNew.vout.resize(1);
25 txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
26 txNew.vout[0].nValue = genesisReward;
27 txNew.vout[0].scriptPubKey = genesisOutputScript;
28
29 CBlock genesis;
30 genesis.nTime = nTime;
31 genesis.nBits = nBits;
32 genesis.nNonce = nNonce;
33 genesis.nVersion = nVersion;
34 genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
35 genesis.hashPrevBlock.SetNull();
36 genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
37 return genesis;
38}
39
51static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
52{
53 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
54 const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
55 return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
56}
57
61class CMainParams : public CChainParams {
62public:
63 CMainParams() {
64 strNetworkID = CBaseChainParams::MAIN;
65 consensus.signet_blocks = false;
66 consensus.signet_challenge.clear();
67 consensus.nSubsidyHalvingInterval = 210000;
68 consensus.BIP16Exception = uint256S("0x00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22");
69 consensus.BIP34Height = 227931;
70 consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
71 consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
72 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
73 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
74 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
75 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
76 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
77 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
78 consensus.nPowTargetSpacing = 10 * 60;
79 consensus.fPowAllowMinDifficultyBlocks = false;
80 consensus.fPowNoRetargeting = false;
81 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
82 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
83 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
84 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
85 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
86 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
87
88 // Deployment of Taproot (BIPs 340-342)
89 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
90 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
91 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
92 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
93
94 consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000001fa4663bbbe19f82de910280");
95 consensus.defaultAssumeValid = uint256S("0x00000000000000000008a89e854d57e5667df88f1cdef6fde2fbca1de5b639ad"); // 691719
96
102 pchMessageStart[0] = 0xf9;
103 pchMessageStart[1] = 0xbe;
104 pchMessageStart[2] = 0xb4;
105 pchMessageStart[3] = 0xd9;
106 nDefaultPort = 8333;
107 nPruneAfterHeight = 100000;
108 m_assumed_blockchain_size = 420;
109 m_assumed_chain_state_size = 6;
110
111 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
112 consensus.hashGenesisBlock = genesis.GetHash();
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<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
140
141 fDefaultConsistencyChecks = false;
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
164 m_assumeutxo_data = MapAssumeutxo{
165 // TODO to be specified in a future patch.
166 };
167
168 chainTxData = ChainTxData{
169 // Data from RPC: getchaintxstats 4096 00000000000000000008a89e854d57e5667df88f1cdef6fde2fbca1de5b639ad
170 /* nTime */ 1626697539,
171 /* nTxCount */ 656509474,
172 /* dTxRate */ 2.424920418708139,
173 };
174 }
175};
176
180class CTestNetParams : public CChainParams {
181public:
182 CTestNetParams() {
183 strNetworkID = CBaseChainParams::TESTNET;
184 consensus.signet_blocks = false;
185 consensus.signet_challenge.clear();
186 consensus.nSubsidyHalvingInterval = 210000;
187 consensus.BIP16Exception = uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105");
188 consensus.BIP34Height = 21111;
189 consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
190 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
191 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
192 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
193 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
194 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
195 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
196 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
197 consensus.nPowTargetSpacing = 10 * 60;
198 consensus.fPowAllowMinDifficultyBlocks = true;
199 consensus.fPowNoRetargeting = false;
200 consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
201 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
202 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
203 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
204 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
205 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
206
207 // Deployment of Taproot (BIPs 340-342)
208 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
209 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
210 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
211 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
212
213 consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000005180c3bd8290da33a1a");
214 consensus.defaultAssumeValid = uint256S("0x0000000000004ae2f3896ca8ecd41c460a35bf6184e145d91558cece1c688a76"); // 2010000
215
216 pchMessageStart[0] = 0x0b;
217 pchMessageStart[1] = 0x11;
218 pchMessageStart[2] = 0x09;
219 pchMessageStart[3] = 0x07;
220 nDefaultPort = 18333;
221 nPruneAfterHeight = 1000;
222 m_assumed_blockchain_size = 40;
223 m_assumed_chain_state_size = 2;
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<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
247
248 fDefaultConsistencyChecks = false;
249 fRequireStandard = false;
250 m_is_test_chain = true;
251 m_is_mockable_chain = false;
252
253 checkpointData = {
254 {
255 {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
256 }
257 };
258
259 m_assumeutxo_data = MapAssumeutxo{
260 // TODO to be specified in a future patch.
261 };
262
263 chainTxData = ChainTxData{
264 // Data from RPC: getchaintxstats 4096 0000000000004ae2f3896ca8ecd41c460a35bf6184e145d91558cece1c688a76
265 /* nTime */ 1625727096,
266 /* nTxCount */ 60408943,
267 /* dTxRate */ 0.08379062270367649,
268 };
269 }
270};
271
275class SigNetParams : public CChainParams {
276public:
277 explicit SigNetParams(const ArgsManager& args) {
278 std::vector<uint8_t> bin;
279 vSeeds.clear();
280
281 if (!args.IsArgSet("-signetchallenge")) {
282 bin = ParseHex("512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae");
283 vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
284
285 // Hardcoded nodes can be removed once there are more DNS seeds
286 vSeeds.emplace_back("178.128.221.177");
287 vSeeds.emplace_back("v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333");
288
289 consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000008546553c03");
290 consensus.defaultAssumeValid = uint256S("0x000000187d4440e5bff91488b700a140441e089a8aaea707414982460edbfe54"); // 47200
291 m_assumed_blockchain_size = 1;
292 m_assumed_chain_state_size = 0;
293 chainTxData = ChainTxData{
294 // Data from RPC: getchaintxstats 4096 000000187d4440e5bff91488b700a140441e089a8aaea707414982460edbfe54
295 /* nTime */ 1626696658,
296 /* nTxCount */ 387761,
297 /* dTxRate */ 0.04035946932424404,
298 };
299 } else {
300 const auto signet_challenge = args.GetArgs("-signetchallenge");
301 if (signet_challenge.size() != 1) {
302 throw std::runtime_error(strprintf("%s: -signetchallenge cannot be multiple values.", __func__));
303 }
304 bin = ParseHex(signet_challenge[0]);
305
306 consensus.nMinimumChainWork = uint256{};
307 consensus.defaultAssumeValid = uint256{};
308 m_assumed_blockchain_size = 0;
309 m_assumed_chain_state_size = 0;
310 chainTxData = ChainTxData{
311 0,
312 0,
313 0,
314 };
315 LogPrintf("Signet with challenge %s\n", signet_challenge[0]);
316 }
317
318 if (args.IsArgSet("-signetseednode")) {
319 vSeeds = args.GetArgs("-signetseednode");
320 }
321
322 strNetworkID = CBaseChainParams::SIGNET;
323 consensus.signet_blocks = true;
324 consensus.signet_challenge.assign(bin.begin(), bin.end());
325 consensus.nSubsidyHalvingInterval = 210000;
326 consensus.BIP16Exception = uint256{};
327 consensus.BIP34Height = 1;
328 consensus.BIP34Hash = uint256{};
329 consensus.BIP65Height = 1;
330 consensus.BIP66Height = 1;
331 consensus.CSVHeight = 1;
332 consensus.SegwitHeight = 1;
333 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
334 consensus.nPowTargetSpacing = 10 * 60;
335 consensus.fPowAllowMinDifficultyBlocks = false;
336 consensus.fPowNoRetargeting = false;
337 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
338 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
339 consensus.MinBIP9WarningHeight = 0;
340 consensus.powLimit = uint256S("00000377ae000000000000000000000000000000000000000000000000000000");
341 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
342 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
343 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
344 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
345
346 // Activation of Taproot (BIPs 340-342)
347 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
348 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
349 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
350 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
351
352 // message start is defined as the first 4 bytes of the sha256d of the block script
353 CHashWriter h(SER_DISK, 0);
354 h << consensus.signet_challenge;
355 uint256 hash = h.GetHash();
356 memcpy(pchMessageStart, hash.begin(), 4);
357
358 nDefaultPort = 38333;
359 nPruneAfterHeight = 1000;
360
361 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
362 consensus.hashGenesisBlock = genesis.GetHash();
363 assert(consensus.hashGenesisBlock == uint256S("0x00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"));
364 assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
365
366 vFixedSeeds.clear();
367
368 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
369 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
370 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
371 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
372 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
373
374 bech32_hrp = "tb";
375
376 fDefaultConsistencyChecks = false;
377 fRequireStandard = true;
378 m_is_test_chain = true;
379 m_is_mockable_chain = false;
380 }
381};
382
387class CRegTestParams : public CChainParams {
388public:
389 explicit CRegTestParams(const ArgsManager& args) {
390 strNetworkID = CBaseChainParams::REGTEST;
391 consensus.signet_blocks = false;
392 consensus.signet_challenge.clear();
393 consensus.nSubsidyHalvingInterval = 150;
394 consensus.BIP16Exception = uint256();
395 consensus.BIP34Height = 1; // Always active unless overridden
396 consensus.BIP34Hash = uint256();
397 consensus.BIP65Height = 1; // Always active unless overridden
398 consensus.BIP66Height = 1; // Always active unless overridden
399 consensus.CSVHeight = 1; // Always active unless overridden
400 consensus.SegwitHeight = 1; // Always active unless overridden
401 consensus.MinBIP9WarningHeight = 0;
402 consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
403 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
404 consensus.nPowTargetSpacing = 10 * 60;
405 consensus.fPowAllowMinDifficultyBlocks = true;
406 consensus.fPowNoRetargeting = true;
407 consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
408 consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
409
410 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
411 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
412 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
413 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
414
415 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
416 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
417 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
418 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
419
420 consensus.nMinimumChainWork = uint256{};
421 consensus.defaultAssumeValid = uint256{};
422
423 pchMessageStart[0] = 0xfa;
424 pchMessageStart[1] = 0xbf;
425 pchMessageStart[2] = 0xb5;
426 pchMessageStart[3] = 0xda;
427 nDefaultPort = 18444;
428 nPruneAfterHeight = args.GetBoolArg("-fastprune", false) ? 100 : 1000;
429 m_assumed_blockchain_size = 0;
430 m_assumed_chain_state_size = 0;
431
432 UpdateActivationParametersFromArgs(args);
433
434 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
435 consensus.hashGenesisBlock = genesis.GetHash();
436 assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
437 assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
438
439 vFixedSeeds.clear();
440 vSeeds.clear();
441 vSeeds.emplace_back("dummySeed.invalid.");
442
443 fDefaultConsistencyChecks = true;
444 fRequireStandard = true;
445 m_is_test_chain = true;
446 m_is_mockable_chain = true;
447
448 checkpointData = {
449 {
450 {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
451 }
452 };
453
454 m_assumeutxo_data = MapAssumeutxo{
455 {
456 110,
457 {AssumeutxoHash{uint256S("0x1ebbf5850204c0bdb15bf030f47c7fe91d45c44c712697e4509ba67adb01c618")}, 110},
458 },
459 {
460 200,
461 {AssumeutxoHash{uint256S("0x51c8d11d8b5c1de51543c579736e786aa2736206d1e11e627568029ce092cf62")}, 200},
462 },
463 };
464
465 chainTxData = ChainTxData{
466 0,
467 0,
468 0
469 };
470
471 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
472 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
473 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
474 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
475 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
476
477 bech32_hrp = "bcrt";
478 }
479
483 void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int min_activation_height)
484 {
485 consensus.vDeployments[d].nStartTime = nStartTime;
486 consensus.vDeployments[d].nTimeout = nTimeout;
487 consensus.vDeployments[d].min_activation_height = min_activation_height;
488 }
489 void UpdateActivationParametersFromArgs(const ArgsManager& args);
490};
491
492static void MaybeUpdateHeights(const ArgsManager& args, Consensus::Params& consensus)
493{
494 for (const std::string& arg : args.GetArgs("-testactivationheight")) {
495 const auto found{arg.find('@')};
496 if (found == std::string::npos) {
497 throw std::runtime_error(strprintf("Invalid format (%s) for -testactivationheight=name@height.", arg));
498 }
499 const auto name{arg.substr(0, found)};
500 const auto value{arg.substr(found + 1)};
501 int32_t height;
502 if (!ParseInt32(value, &height) || height < 0 || height >= std::numeric_limits<int>::max()) {
503 throw std::runtime_error(strprintf("Invalid height value (%s) for -testactivationheight=name@height.", arg));
504 }
505 if (name == "segwit") {
506 consensus.SegwitHeight = int{height};
507 } else if (name == "bip34") {
508 consensus.BIP34Height = int{height};
509 } else if (name == "dersig") {
510 consensus.BIP66Height = int{height};
511 } else if (name == "cltv") {
512 consensus.BIP65Height = int{height};
513 } else if (name == "csv") {
514 consensus.CSVHeight = int{height};
515 } else {
516 throw std::runtime_error(strprintf("Invalid name (%s) for -testactivationheight=name@height.", arg));
517 }
518 }
519}
520
521void CRegTestParams::UpdateActivationParametersFromArgs(const ArgsManager& args)
522{
523 MaybeUpdateHeights(args, consensus);
524
525 if (!args.IsArgSet("-vbparams")) return;
526
527 for (const std::string& strDeployment : args.GetArgs("-vbparams")) {
528 std::vector<std::string> vDeploymentParams;
529 boost::split(vDeploymentParams, strDeployment, boost::is_any_of(":"));
530 if (vDeploymentParams.size() < 3 || 4 < vDeploymentParams.size()) {
531 throw std::runtime_error("Version bits parameters malformed, expecting deployment:start:end[:min_activation_height]");
532 }
533 int64_t nStartTime, nTimeout;
534 int min_activation_height = 0;
535 if (!ParseInt64(vDeploymentParams[1], &nStartTime)) {
536 throw std::runtime_error(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1]));
537 }
538 if (!ParseInt64(vDeploymentParams[2], &nTimeout)) {
539 throw std::runtime_error(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2]));
540 }
541 if (vDeploymentParams.size() >= 4 && !ParseInt32(vDeploymentParams[3], &min_activation_height)) {
542 throw std::runtime_error(strprintf("Invalid min_activation_height (%s)", vDeploymentParams[3]));
543 }
544 bool found = false;
545 for (int j=0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) {
546 if (vDeploymentParams[0] == VersionBitsDeploymentInfo[j].name) {
547 UpdateVersionBitsParameters(Consensus::DeploymentPos(j), nStartTime, nTimeout, min_activation_height);
548 found = true;
549 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);
550 break;
551 }
552 }
553 if (!found) {
554 throw std::runtime_error(strprintf("Invalid deployment (%s)", vDeploymentParams[0]));
555 }
556 }
557}
558
559static std::unique_ptr<const CChainParams> globalChainParams;
560
561const CChainParams &Params() {
562 assert(globalChainParams);
563 return *globalChainParams;
564}
565
566std::unique_ptr<const CChainParams> CreateChainParams(const ArgsManager& args, const std::string& chain)
567{
568 if (chain == CBaseChainParams::MAIN) {
569 return std::unique_ptr<CChainParams>(new CMainParams());
570 } else if (chain == CBaseChainParams::TESTNET) {
571 return std::unique_ptr<CChainParams>(new CTestNetParams());
572 } else if (chain == CBaseChainParams::SIGNET) {
573 return std::unique_ptr<CChainParams>(new SigNetParams(args));
574 } else if (chain == CBaseChainParams::REGTEST) {
575 return std::unique_ptr<CChainParams>(new CRegTestParams(args));
576 }
577 throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
578}
579
580void SelectParams(const std::string& network)
581{
582 SelectBaseParams(network);
583 globalChainParams = CreateChainParams(gArgs, network);
584}
CAmount
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
COIN
static constexpr CAmount COIN
The amount of satoshis in one BTC.
Definition: amount.h:15
SelectParams
void SelectParams(const std::string &network)
Sets the params returned by Params() to those for the given chain name.
Definition: chainparams.cpp:580
MaybeUpdateHeights
static void MaybeUpdateHeights(const ArgsManager &args, Consensus::Params &consensus)
Definition: chainparams.cpp:492
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:19
globalChainParams
static std::unique_ptr< const CChainParams > globalChainParams
Definition: chainparams.cpp:559
CreateChainParams
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.
Definition: chainparams.cpp:566
Params
const CChainParams & Params()
Return the currently selected parameters.
Definition: chainparams.cpp:561
MapAssumeutxo
std::map< int, const AssumeutxoData > MapAssumeutxo
Definition: chainparams.h:51
SelectBaseParams
void SelectBaseParams(const std::string &chain)
Sets the params returned by Params() to those for the given network.
Definition: chainparamsbase.cpp:57
chainparams_seed_test
static const uint8_t chainparams_seed_test[]
Definition: chainparamsseeds.h:704
chainparams_seed_main
static const uint8_t chainparams_seed_main[]
List of fixed seed nodes for the bitcoin network AUTOGENERATED by contrib/seeds/generate-seeds....
Definition: chainparamsseeds.h:9
ArgsManager::GetArgs
std::vector< std::string > GetArgs(const std::string &strArg) const
Return a vector of strings of the given argument.
Definition: system.cpp:487
ArgsManager::IsArgSet
bool IsArgSet(const std::string &strArg) const
Return true if the given argument has been manually set.
Definition: system.cpp:496
ArgsManager::GetBoolArg
bool GetBoolArg(const std::string &strArg, bool fDefault) const
Return boolean argument or default value.
Definition: system.cpp:602
CBaseChainParams::REGTEST
static const std::string REGTEST
Definition: chainparamsbase.h:25
CBaseChainParams::TESTNET
static const std::string TESTNET
Definition: chainparamsbase.h:23
CBaseChainParams::SIGNET
static const std::string SIGNET
Definition: chainparamsbase.h:24
CBaseChainParams::MAIN
static const std::string MAIN
Chain name strings.
Definition: chainparamsbase.h:22
CBlockHeader::nNonce
uint32_t nNonce
Definition: block.h:29
CBlockHeader::nBits
uint32_t nBits
Definition: block.h:28
CBlockHeader::nTime
uint32_t nTime
Definition: block.h:27
CBlockHeader::nVersion
int32_t nVersion
Definition: block.h:24
CBlockHeader::hashPrevBlock
uint256 hashPrevBlock
Definition: block.h:25
CBlockHeader::hashMerkleRoot
uint256 hashMerkleRoot
Definition: block.h:26
CBlockHeader::GetHash
uint256 GetHash() const
Definition: block.cpp:11
CBlock
Definition: block.h:63
CBlock::vtx
std::vector< CTransactionRef > vtx
Definition: block.h:66
CChainParams
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system.
Definition: chainparams.h:70
CChainParams::m_assumed_chain_state_size
uint64_t m_assumed_chain_state_size
Definition: chainparams.h:133
CChainParams::bech32_hrp
std::string bech32_hrp
Definition: chainparams.h:136
CChainParams::m_is_test_chain
bool m_is_test_chain
Definition: chainparams.h:142
CChainParams::genesis
CBlock genesis
Definition: chainparams.h:138
CChainParams::m_assumeutxo_data
MapAssumeutxo m_assumeutxo_data
Definition: chainparams.h:145
CChainParams::m_assumed_blockchain_size
uint64_t m_assumed_blockchain_size
Definition: chainparams.h:132
CChainParams::vFixedSeeds
std::vector< uint8_t > vFixedSeeds
Definition: chainparams.h:139
CChainParams::fDefaultConsistencyChecks
bool fDefaultConsistencyChecks
Definition: chainparams.h:140
CChainParams::strNetworkID
std::string strNetworkID
Definition: chainparams.h:137
CChainParams::base58Prefixes
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:135
CChainParams::consensus
Consensus::Params consensus
Definition: chainparams.h:128
CChainParams::fRequireStandard
bool fRequireStandard
Definition: chainparams.h:141
CChainParams::vSeeds
std::vector< std::string > vSeeds
Definition: chainparams.h:134
CChainParams::m_is_mockable_chain
bool m_is_mockable_chain
Definition: chainparams.h:143
CChainParams::checkpointData
CCheckpointData checkpointData
Definition: chainparams.h:144
CChainParams::nDefaultPort
uint16_t nDefaultPort
Definition: chainparams.h:130
CChainParams::pchMessageStart
CMessageHeader::MessageStartChars pchMessageStart
Definition: chainparams.h:129
CChainParams::nPruneAfterHeight
uint64_t nPruneAfterHeight
Definition: chainparams.h:131
CChainParams::chainTxData
ChainTxData chainTxData
Definition: chainparams.h:146
CHashWriter
A writer stream (for serialization) that computes a 256-bit hash.
Definition: hash.h:101
CHashWriter::GetHash
uint256 GetHash()
Compute the double-SHA256 hash of all data written to this object.
Definition: hash.h:122
CMainParams
Main network on which people trade goods and services.
Definition: chainparams.cpp:61
CRegTestParams
Regression test: intended for private networks only.
Definition: chainparams.cpp:387
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:483
CRegTestParams::CRegTestParams
CRegTestParams(const ArgsManager &args)
Definition: chainparams.cpp:389
CRegTestParams::UpdateActivationParametersFromArgs
void UpdateActivationParametersFromArgs(const ArgsManager &args)
Definition: chainparams.cpp:521
CScript
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:406
CTestNetParams
Testnet (v3): public test network which is reset from time to time.
Definition: chainparams.cpp:180
SigNetParams
Signet: test network with an additional consensus parameter (see BIP325).
Definition: chainparams.cpp:275
SigNetParams::SigNetParams
SigNetParams(const ArgsManager &args)
Definition: chainparams.cpp:277
base_blob::begin
unsigned char * begin()
Definition: uint256.h:58
base_blob::SetNull
void SetNull()
Definition: uint256.h:39
uint256
256-bit opaque blob.
Definition: uint256.h:124
VersionBitsDeploymentInfo
const struct VBDeploymentInfo VersionBitsDeploymentInfo[Consensus::MAX_VERSION_BITS_DEPLOYMENTS]
Definition: deploymentinfo.cpp:9
LogPrintf
#define LogPrintf(...)
Definition: logging.h:187
BlockMerkleRoot
uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition: merkle.cpp:65
Consensus::DeploymentPos
DeploymentPos
Definition: params.h:28
Consensus::DEPLOYMENT_TAPROOT
@ DEPLOYMENT_TAPROOT
Definition: params.h:30
Consensus::DEPLOYMENT_TESTDUMMY
@ DEPLOYMENT_TESTDUMMY
Definition: params.h:29
Consensus::MAX_VERSION_BITS_DEPLOYMENTS
@ MAX_VERSION_BITS_DEPLOYMENTS
Definition: params.h:32
MakeTransactionRef
static CTransactionRef MakeTransactionRef(Tx &&txIn)
Definition: transaction.h:387
name
const char * name
Definition: rest.cpp:43
OP_CHECKSIG
@ OP_CHECKSIG
Definition: script.h:183
SER_DISK
@ SER_DISK
Definition: serialize.h:139
ParseHex
std::vector< unsigned char > ParseHex(const char *psz)
Definition: strencodings.cpp:83
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:305
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
CMutableTransaction
A mutable version of CTransaction.
Definition: transaction.h:345
CMutableTransaction::vout
std::vector< CTxOut > vout
Definition: transaction.h:347
CMutableTransaction::vin
std::vector< CTxIn > vin
Definition: transaction.h:346
ChainTxData
Holds various statistics on transactions within a chain.
Definition: chainparams.h:59
Consensus::BIP9Deployment::min_activation_height
int min_activation_height
If lock in occurs, delay activation until at least this block height.
Definition: params.h:50
Consensus::BIP9Deployment::bit
int bit
Bit position to select the particular bit in nVersion.
Definition: params.h:41
Consensus::BIP9Deployment::ALWAYS_ACTIVE
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:59
Consensus::BIP9Deployment::NEVER_ACTIVE
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition: params.h:64
Consensus::BIP9Deployment::nTimeout
int64_t nTimeout
Timeout/expiry MedianTime for the deployment attempt.
Definition: params.h:45
Consensus::BIP9Deployment::NO_TIMEOUT
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:53
Consensus::BIP9Deployment::nStartTime
int64_t nStartTime
Start MedianTime for version bits miner confirmation.
Definition: params.h:43
Consensus::Params
Parameters that influence chain consensus.
Definition: params.h:70
Consensus::Params::BIP65Height
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:79
Consensus::Params::CSVHeight
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:83
Consensus::Params::BIP34Hash
uint256 BIP34Hash
Definition: params.h:77
Consensus::Params::nMinerConfirmationWindow
uint32_t nMinerConfirmationWindow
Definition: params.h:97
Consensus::Params::defaultAssumeValid
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:109
Consensus::Params::signet_challenge
std::vector< uint8_t > signet_challenge
Definition: params.h:116
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:115
Consensus::Params::SegwitHeight
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:87
Consensus::Params::BIP34Height
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:76
Consensus::Params::nSubsidyHalvingInterval
int nSubsidyHalvingInterval
Definition: params.h:72
Consensus::Params::vDeployments
BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS]
Definition: params.h:98
Consensus::Params::hashGenesisBlock
uint256 hashGenesisBlock
Definition: params.h:71
Consensus::Params::MinBIP9WarningHeight
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition: params.h:90
Consensus::Params::fPowNoRetargeting
bool fPowNoRetargeting
Definition: params.h:102
Consensus::Params::nMinimumChainWork
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:107
Consensus::Params::nRuleChangeActivationThreshold
uint32_t nRuleChangeActivationThreshold
Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period,...
Definition: params.h:96
Consensus::Params::nPowTargetTimespan
int64_t nPowTargetTimespan
Definition: params.h:104
Consensus::Params::BIP66Height
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:81
Consensus::Params::powLimit
uint256 powLimit
Proof of work parameters.
Definition: params.h:100
Consensus::Params::BIP16Exception
uint256 BIP16Exception
Definition: params.h:74
Consensus::Params::nPowTargetSpacing
int64_t nPowTargetSpacing
Definition: params.h:103
Consensus::Params::fPowAllowMinDifficultyBlocks
bool fPowAllowMinDifficultyBlocks
Definition: params.h:101
strprintf
#define strprintf
Format arguments and return the string or write to given std::ostream (see tinyformat::format doc for...
Definition: tinyformat.h:1164
uint256S
uint256 uint256S(const char *str)
Definition: uint256.h:137
gArgs
ArgsManager gArgs
Definition: system.cpp:85
assert
assert(!tx.IsCoinBase())
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