Bitcoin Core 29.99.0
P2P Digital Currency
chainparams.cpp
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1// Copyright (c) 2010 Satoshi Nakamoto
2// Copyright (c) 2009-2021 The Bitcoin Core developers
3// Distributed under the MIT software license, see the accompanying
4// file COPYING or http://www.opensource.org/licenses/mit-license.php.
5
7
8#include <chainparamsseeds.h>
9#include <consensus/amount.h>
10#include <consensus/merkle.h>
11#include <consensus/params.h>
12#include <hash.h>
14#include <logging.h>
15#include <primitives/block.h>
17#include <script/interpreter.h>
18#include <script/script.h>
19#include <uint256.h>
20#include <util/chaintype.h>
21#include <util/strencodings.h>
22
23#include <algorithm>
24#include <cassert>
25#include <cstdint>
26#include <cstring>
27#include <type_traits>
28
29using namespace util::hex_literals;
30
31// Workaround MSVC bug triggering C7595 when calling consteval constructors in
32// initializer lists.
33// A fix may be on the way:
34// https://developercommunity.visualstudio.com/t/consteval-conversion-function-fails/1579014
35#if defined(_MSC_VER)
36auto consteval_ctor(auto&& input) { return input; }
37#else
38#define consteval_ctor(input) (input)
39#endif
40
41static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
42{
44 txNew.version = 1;
45 txNew.vin.resize(1);
46 txNew.vout.resize(1);
47 txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
48 txNew.vout[0].nValue = genesisReward;
49 txNew.vout[0].scriptPubKey = genesisOutputScript;
50
51 CBlock genesis;
52 genesis.nTime = nTime;
53 genesis.nBits = nBits;
54 genesis.nNonce = nNonce;
55 genesis.nVersion = nVersion;
56 genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
57 genesis.hashPrevBlock.SetNull();
58 genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
59 return genesis;
60}
61
73static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
74{
75 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
76 const CScript genesisOutputScript = CScript() << "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"_hex << OP_CHECKSIG;
77 return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
78}
79
83class CMainParams : public CChainParams {
84public:
90 consensus.script_flag_exceptions.emplace( // BIP16 exception
91 uint256{"00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"}, SCRIPT_VERIFY_NONE);
92 consensus.script_flag_exceptions.emplace( // Taproot exception
93 uint256{"0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"}, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
94 consensus.BIP34Height = 227931;
95 consensus.BIP34Hash = uint256{"000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"};
96 consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
97 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
98 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
99 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
100 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
101 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
102 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
105 consensus.enforce_BIP94 = false;
107 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
108 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
113
114 // Deployment of Taproot (BIPs 340-342)
116 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
117 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
118 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
119
120 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000b1f3b93b65b16d035a82be84"};
121 consensus.defaultAssumeValid = uint256{"00000000000000000001b658dd1120e82e66d2790811f89ede9742ada3ed6d77"}; // 886157
122
128 pchMessageStart[0] = 0xf9;
129 pchMessageStart[1] = 0xbe;
130 pchMessageStart[2] = 0xb4;
131 pchMessageStart[3] = 0xd9;
132 nDefaultPort = 8333;
133 nPruneAfterHeight = 100000;
136
137 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
139 assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
140 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
141
142 // Note that of those which support the service bits prefix, most only support a subset of
143 // possible options.
144 // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
145 // service bits we want, but we should get them updated to support all service bits wanted by any
146 // release ASAP to avoid it where possible.
147 vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
148 vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
149 vSeeds.emplace_back("dnsseed.bitcoin.dashjr-list-of-p2p-nodes.us."); // Luke Dashjr
150 vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
151 vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
152 vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
153 vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
154 vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
155 vSeeds.emplace_back("seed.mainnet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
156
157 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
158 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
159 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
160 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
161 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
162
163 bech32_hrp = "bc";
164
165 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
166
168 m_is_mockable_chain = false;
169
171 {
172 .height = 840'000,
173 .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
174 .m_chain_tx_count = 991032194,
175 .blockhash = consteval_ctor(uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"}),
176 },
177 {
178 .height = 880'000,
179 .hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
180 .m_chain_tx_count = 1145604538,
181 .blockhash = consteval_ctor(uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"}),
182 }
183 };
184
186 // Data from RPC: getchaintxstats 4096 00000000000000000001b658dd1120e82e66d2790811f89ede9742ada3ed6d77
187 .nTime = 1741017141,
188 .tx_count = 1161875261,
189 .dTxRate = 4.620728156243148,
190 };
191 }
192};
193
198public:
201 consensus.signet_blocks = false;
204 consensus.script_flag_exceptions.emplace( // BIP16 exception
205 uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
206 consensus.BIP34Height = 21111;
207 consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
208 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
209 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
210 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
211 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
212 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
213 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
214 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
217 consensus.enforce_BIP94 = false;
219 consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
220 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
225
226 // Deployment of Taproot (BIPs 340-342)
228 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
229 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
231
232 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000015f5e0c9f13455b0eb17"};
233 consensus.defaultAssumeValid = uint256{"00000000000003fc7967410ba2d0a8a8d50daedc318d43e8baf1a9782c236a57"}; // 3974606
234
235 pchMessageStart[0] = 0x0b;
236 pchMessageStart[1] = 0x11;
237 pchMessageStart[2] = 0x09;
238 pchMessageStart[3] = 0x07;
239 nDefaultPort = 18333;
240 nPruneAfterHeight = 1000;
243
244 genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
246 assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
247 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
248
249 vFixedSeeds.clear();
250 vSeeds.clear();
251 // nodes with support for servicebits filtering should be at the top
252 vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
253 vSeeds.emplace_back("seed.tbtc.petertodd.net.");
254 vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
255 vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
256 vSeeds.emplace_back("seed.testnet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
257
258 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
259 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
260 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
261 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
262 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
263
264 bech32_hrp = "tb";
265
266 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
267
269 m_is_mockable_chain = false;
270
272 {
273 .height = 2'500'000,
274 .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
275 .m_chain_tx_count = 66484552,
276 .blockhash = consteval_ctor(uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"}),
277 }
278 };
279
281 // Data from RPC: getchaintxstats 4096 00000000000003fc7967410ba2d0a8a8d50daedc318d43e8baf1a9782c236a57
282 .nTime = 1741042082,
283 .tx_count = 475477615,
284 .dTxRate = 17.15933950357594,
285 };
286 }
287};
288
293public:
296 consensus.signet_blocks = false;
306 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
307 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
312 consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
313 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
318
319 // Deployment of Taproot (BIPs 340-342)
324
325 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000001d6dce8651b6094e4c1"};
326 consensus.defaultAssumeValid = uint256{"0000000000003ed4f08dbdf6f7d6b271a6bcffce25675cb40aa9fa43179a89f3"}; // 72600
327
328 pchMessageStart[0] = 0x1c;
329 pchMessageStart[1] = 0x16;
330 pchMessageStart[2] = 0x3f;
331 pchMessageStart[3] = 0x28;
332 nDefaultPort = 48333;
333 nPruneAfterHeight = 1000;
336
337 const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
338 const CScript testnet4_genesis_script = CScript() << "000000000000000000000000000000000000000000000000000000000000000000"_hex << OP_CHECKSIG;
339 genesis = CreateGenesisBlock(testnet4_genesis_msg,
340 testnet4_genesis_script,
341 1714777860,
342 393743547,
343 0x1d00ffff,
344 1,
345 50 * COIN);
347 assert(consensus.hashGenesisBlock == uint256{"00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"});
348 assert(genesis.hashMerkleRoot == uint256{"7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"});
349
350 vFixedSeeds.clear();
351 vSeeds.clear();
352 // nodes with support for servicebits filtering should be at the top
353 vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
354 vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
355
356 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
357 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
358 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
359 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
360 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
361
362 bech32_hrp = "tb";
363
364 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
365
367 m_is_mockable_chain = false;
368
370 {}
371 };
372
374 // Data from RPC: getchaintxstats 4096 0000000000003ed4f08dbdf6f7d6b271a6bcffce25675cb40aa9fa43179a89f3
375 .nTime = 1741070246,
376 .tx_count = 7653966,
377 .dTxRate = 1.239174414591965,
378 };
379 }
380};
381
386public:
387 explicit SigNetParams(const SigNetOptions& options)
388 {
389 std::vector<uint8_t> bin;
390 vFixedSeeds.clear();
391 vSeeds.clear();
392
393 if (!options.challenge) {
394 bin = "512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae"_hex_v_u8;
395 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_signet), std::end(chainparams_seed_signet));
396 vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
397 vSeeds.emplace_back("seed.signet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
398
399 consensus.nMinimumChainWork = uint256{"000000000000000000000000000000000000000000000000000002b517f3d1a1"};
400 consensus.defaultAssumeValid = uint256{"000000895a110f46e59eb82bbc5bfb67fa314656009c295509c21b4999f5180a"}; // 237722
404 // Data from RPC: getchaintxstats 4096 000000895a110f46e59eb82bbc5bfb67fa314656009c295509c21b4999f5180a
405 .nTime = 1741019645,
406 .tx_count = 16540736,
407 .dTxRate = 1.064918879911595,
408 };
409 } else {
410 bin = *options.challenge;
416 0,
417 0,
418 0,
419 };
420 LogPrintf("Signet with challenge %s\n", HexStr(bin));
421 }
422
423 if (options.seeds) {
424 vSeeds = *options.seeds;
425 }
426
429 consensus.signet_challenge.assign(bin.begin(), bin.end());
437 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
440 consensus.enforce_BIP94 = false;
442 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
443 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
445 consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
450
451 // Activation of Taproot (BIPs 340-342)
456
457 // message start is defined as the first 4 bytes of the sha256d of the block script
458 HashWriter h{};
460 uint256 hash = h.GetHash();
461 std::copy_n(hash.begin(), 4, pchMessageStart.begin());
462
463 nDefaultPort = 38333;
464 nPruneAfterHeight = 1000;
465
466 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
468 assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
469 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
470
472 {
473 .height = 160'000,
474 .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
475 .m_chain_tx_count = 2289496,
476 .blockhash = consteval_ctor(uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"}),
477 }
478 };
479
480 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
481 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
482 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
483 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
484 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
485
486 bech32_hrp = "tb";
487
489 m_is_mockable_chain = false;
490 }
491};
492
498{
499public:
500 explicit CRegTestParams(const RegTestOptions& opts)
501 {
503 consensus.signet_blocks = false;
506 consensus.BIP34Height = 1; // Always active unless overridden
508 consensus.BIP65Height = 1; // Always active unless overridden
509 consensus.BIP66Height = 1; // Always active unless overridden
510 consensus.CSVHeight = 1; // Always active unless overridden
511 consensus.SegwitHeight = 0; // Always active unless overridden
513 consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
514 consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
519 consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
520 consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
521
526
531
534
535 pchMessageStart[0] = 0xfa;
536 pchMessageStart[1] = 0xbf;
537 pchMessageStart[2] = 0xb5;
538 pchMessageStart[3] = 0xda;
539 nDefaultPort = 18444;
540 nPruneAfterHeight = opts.fastprune ? 100 : 1000;
543
544 for (const auto& [dep, height] : opts.activation_heights) {
545 switch (dep) {
547 consensus.SegwitHeight = int{height};
548 break;
550 consensus.BIP34Height = int{height};
551 break;
553 consensus.BIP66Height = int{height};
554 break;
556 consensus.BIP65Height = int{height};
557 break;
559 consensus.CSVHeight = int{height};
560 break;
561 }
562 }
563
564 for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
565 consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
566 consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
567 consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
568 }
569
570 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
572 assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
573 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
574
575 vFixedSeeds.clear();
576 vSeeds.clear();
577 vSeeds.emplace_back("dummySeed.invalid.");
578
580 m_is_mockable_chain = true;
581
583 { // For use by unit tests
584 .height = 110,
585 .hash_serialized = AssumeutxoHash{uint256{"6657b736d4fe4db0cbc796789e812d5dba7f5c143764b1b6905612f1830609d1"}},
586 .m_chain_tx_count = 111,
587 .blockhash = consteval_ctor(uint256{"696e92821f65549c7ee134edceeeeaaa4105647a3c4fd9f298c0aec0ab50425c"}),
588 },
589 {
590 // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
591 .height = 200,
592 .hash_serialized = AssumeutxoHash{uint256{"7e3b7780fbd2fa479a01f66950dc8f728dc1b11f03d06d5bf223168520df3a48"}},
593 .m_chain_tx_count = 201,
594 .blockhash = consteval_ctor(uint256{"5e93653318f294fb5aa339d00bbf8cf1c3515488ad99412c37608b139ea63b27"}),
595 },
596 {
597 // For use by test/functional/feature_assumeutxo.py
598 .height = 299,
599 .hash_serialized = AssumeutxoHash{uint256{"a4bf3407ccb2cc0145c49ebba8fa91199f8a3903daf0883875941497d2493c27"}},
600 .m_chain_tx_count = 334,
601 .blockhash = consteval_ctor(uint256{"3bb7ce5eba0be48939b7a521ac1ba9316afee2c7bada3a0cca24188e6d7d96c0"}),
602 },
603 };
604
606 0,
607 0,
608 0
609 };
610
611 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
612 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
613 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
614 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
615 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
616
617 bech32_hrp = "bcrt";
618 }
619};
620
621std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
622{
623 return std::make_unique<const SigNetParams>(options);
624}
625
626std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
627{
628 return std::make_unique<const CRegTestParams>(options);
629}
630
631std::unique_ptr<const CChainParams> CChainParams::Main()
632{
633 return std::make_unique<const CMainParams>();
634}
635
636std::unique_ptr<const CChainParams> CChainParams::TestNet()
637{
638 return std::make_unique<const CTestNetParams>();
639}
640
641std::unique_ptr<const CChainParams> CChainParams::TestNet4()
642{
643 return std::make_unique<const CTestNet4Params>();
644}
645
647{
648 std::vector<int> heights;
649 heights.reserve(m_assumeutxo_data.size());
650
651 for (const auto& data : m_assumeutxo_data) {
652 heights.emplace_back(data.height);
653 }
654 return heights;
655}
656
657std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
658{
659 const auto mainnet_msg = CChainParams::Main()->MessageStart();
660 const auto testnet_msg = CChainParams::TestNet()->MessageStart();
661 const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
662 const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
663 const auto signet_msg = CChainParams::SigNet({})->MessageStart();
664
665 if (std::ranges::equal(message, mainnet_msg)) {
666 return ChainType::MAIN;
667 } else if (std::ranges::equal(message, testnet_msg)) {
668 return ChainType::TESTNET;
669 } else if (std::ranges::equal(message, testnet4_msg)) {
670 return ChainType::TESTNET4;
671 } else if (std::ranges::equal(message, regtest_msg)) {
672 return ChainType::REGTEST;
673 } else if (std::ranges::equal(message, signet_msg)) {
674 return ChainType::SIGNET;
675 }
676 return std::nullopt;
677}
int64_t CAmount
Amount in satoshis (Can be negative)
Definition: amount.h:12
static constexpr CAmount COIN
The amount of satoshis in one BTC.
Definition: amount.h:15
static const uint8_t chainparams_seed_test[]
static const uint8_t chainparams_seed_signet[]
static const uint8_t chainparams_seed_main[]
List of fixed seed nodes for the bitcoin network AUTOGENERATED by contrib/seeds/generate-seeds....
static const uint8_t chainparams_seed_testnet4[]
uint32_t nNonce
Definition: block.h:30
uint32_t nBits
Definition: block.h:29
uint32_t nTime
Definition: block.h:28
int32_t nVersion
Definition: block.h:25
uint256 hashPrevBlock
Definition: block.h:26
uint256 hashMerkleRoot
Definition: block.h:27
uint256 GetHash() const
Definition: block.cpp:11
Definition: block.h:69
std::vector< CTransactionRef > vtx
Definition: block.h:72
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system.
Definition: chainparams.h:69
uint64_t m_assumed_chain_state_size
Definition: chainparams.h:162
MessageStartChars pchMessageStart
Definition: chainparams.h:158
static std::unique_ptr< const CChainParams > Main()
std::string bech32_hrp
Definition: chainparams.h:165
std::vector< int > GetAvailableSnapshotHeights() const
static std::unique_ptr< const CChainParams > RegTest(const RegTestOptions &options)
CBlock genesis
Definition: chainparams.h:167
uint64_t m_assumed_blockchain_size
Definition: chainparams.h:161
std::vector< uint8_t > vFixedSeeds
Definition: chainparams.h:168
bool fDefaultConsistencyChecks
Definition: chainparams.h:169
static std::unique_ptr< const CChainParams > TestNet()
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:164
Consensus::Params consensus
Definition: chainparams.h:157
std::vector< AssumeutxoData > m_assumeutxo_data
Definition: chainparams.h:171
std::vector< std::string > vSeeds
Definition: chainparams.h:163
bool m_is_mockable_chain
Definition: chainparams.h:170
static std::unique_ptr< const CChainParams > TestNet4()
ChainType m_chain_type
Definition: chainparams.h:166
uint16_t nDefaultPort
Definition: chainparams.h:159
static std::unique_ptr< const CChainParams > SigNet(const SigNetOptions &options)
uint64_t nPruneAfterHeight
Definition: chainparams.h:160
ChainTxData chainTxData
Definition: chainparams.h:172
Main network on which people trade goods and services.
Definition: chainparams.cpp:83
Regression test: intended for private networks only.
CRegTestParams(const RegTestOptions &opts)
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:415
Testnet (v4): public test network which is reset from time to time.
Testnet (v3): public test network which is reset from time to time.
A writer stream (for serialization) that computes a 256-bit hash.
Definition: hash.h:101
Signet: test network with an additional consensus parameter (see BIP325).
SigNetParams(const SigNetOptions &options)
constexpr unsigned char * begin()
Definition: uint256.h:115
constexpr void SetNull()
Definition: uint256.h:55
256-bit opaque blob.
Definition: uint256.h:201
std::string HexStr(const std::span< const uint8_t > s)
Convert a span of bytes to a lower-case hexadecimal string.
Definition: hex_base.cpp:29
@ SCRIPT_VERIFY_P2SH
Definition: interpreter.h:49
@ SCRIPT_VERIFY_WITNESS
Definition: interpreter.h:108
@ SCRIPT_VERIFY_NONE
Definition: interpreter.h:46
#define consteval_ctor(input)
Definition: chainparams.cpp:38
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:41
std::optional< ChainType > GetNetworkForMagic(const MessageStartChars &message)
#define LogPrintf(...)
Definition: logging.h:266
uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition: merkle.cpp:66
std::array< uint8_t, 4 > MessageStartChars
@ DEPLOYMENT_TAPROOT
Definition: params.h:34
@ DEPLOYMENT_TESTDUMMY
Definition: params.h:33
@ DEPLOYMENT_DERSIG
Definition: params.h:26
@ DEPLOYMENT_CSV
Definition: params.h:27
@ DEPLOYMENT_SEGWIT
Definition: params.h:28
@ DEPLOYMENT_HEIGHTINCB
Definition: params.h:24
@ DEPLOYMENT_CLTV
Definition: params.h:25
""_hex is a compile-time user-defined literal returning a std::array<std::byte>, equivalent to ParseH...
Definition: strencodings.h:427
static CTransactionRef MakeTransactionRef(Tx &&txIn)
Definition: transaction.h:424
@ OP_CHECKSIG
Definition: script.h:190
RegTestOptions holds configurations for creating a regtest CChainParams.
Definition: chainparams.h:141
std::unordered_map< Consensus::DeploymentPos, VersionBitsParameters > version_bits_parameters
Definition: chainparams.h:142
std::unordered_map< Consensus::BuriedDeployment, int > activation_heights
Definition: chainparams.h:143
SigNetOptions holds configurations for creating a signet CChainParams.
Definition: chainparams.h:124
std::optional< std::vector< uint8_t > > challenge
Definition: chainparams.h:125
std::optional< std::vector< std::string > > seeds
Definition: chainparams.h:126
A mutable version of CTransaction.
Definition: transaction.h:378
std::vector< CTxOut > vout
Definition: transaction.h:380
std::vector< CTxIn > vin
Definition: transaction.h:379
Holds various statistics on transactions within a chain.
Definition: chainparams.h:58
int64_t nTime
UNIX timestamp of last known number of transactions.
Definition: chainparams.h:59
int min_activation_height
If lock in occurs, delay activation until at least this block height.
Definition: params.h:54
int bit
Bit position to select the particular bit in nVersion.
Definition: params.h:45
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:63
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition: params.h:68
int64_t nTimeout
Timeout/expiry MedianTime for the deployment attempt.
Definition: params.h:49
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:57
int64_t nStartTime
Start MedianTime for version bits miner confirmation.
Definition: params.h:47
bool enforce_BIP94
Enforce BIP94 timewarp attack mitigation.
Definition: params.h:115
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:88
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:92
uint256 BIP34Hash
Definition: params.h:86
uint32_t nMinerConfirmationWindow
Definition: params.h:106
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:127
std::map< uint256, uint32_t > script_flag_exceptions
Hashes of blocks that.
Definition: params.h:83
std::vector< uint8_t > signet_challenge
Definition: params.h:134
bool signet_blocks
If true, witness commitments contain a payload equal to a Bitcoin Script solution to the signet chall...
Definition: params.h:133
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:96
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:85
int nSubsidyHalvingInterval
Definition: params.h:76
BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS]
Definition: params.h:107
uint256 hashGenesisBlock
Definition: params.h:75
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition: params.h:99
bool fPowNoRetargeting
Definition: params.h:116
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:125
uint32_t nRuleChangeActivationThreshold
Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period,...
Definition: params.h:105
int64_t nPowTargetTimespan
Definition: params.h:118
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:90
uint256 powLimit
Proof of work parameters.
Definition: params.h:109
int64_t nPowTargetSpacing
Definition: params.h:117
bool fPowAllowMinDifficultyBlocks
Definition: params.h:110
assert(!tx.IsCoinBase())