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;
110 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
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
121
122 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000b1f3b93b65b16d035a82be84"};
123 consensus.defaultAssumeValid = uint256{"00000000000000000001b658dd1120e82e66d2790811f89ede9742ada3ed6d77"}; // 886157
124
130 pchMessageStart[0] = 0xf9;
131 pchMessageStart[1] = 0xbe;
132 pchMessageStart[2] = 0xb4;
133 pchMessageStart[3] = 0xd9;
134 nDefaultPort = 8333;
135 nPruneAfterHeight = 100000;
138
139 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
141 assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
142 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
143
144 // Note that of those which support the service bits prefix, most only support a subset of
145 // possible options.
146 // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
147 // service bits we want, but we should get them updated to support all service bits wanted by any
148 // release ASAP to avoid it where possible.
149 vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
150 vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
151 vSeeds.emplace_back("dnsseed.bitcoin.dashjr-list-of-p2p-nodes.us."); // Luke Dashjr
152 vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
153 vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
154 vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
155 vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
156 vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
157 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
158
159 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
160 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
161 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
162 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
163 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
164
165 bech32_hrp = "bc";
166
167 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
168
170 m_is_mockable_chain = false;
171
173 {
174 .height = 840'000,
175 .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
176 .m_chain_tx_count = 991032194,
177 .blockhash = consteval_ctor(uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"}),
178 },
179 {
180 .height = 880'000,
181 .hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
182 .m_chain_tx_count = 1145604538,
183 .blockhash = consteval_ctor(uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"}),
184 }
185 };
186
188 // Data from RPC: getchaintxstats 4096 00000000000000000001b658dd1120e82e66d2790811f89ede9742ada3ed6d77
189 .nTime = 1741017141,
190 .tx_count = 1161875261,
191 .dTxRate = 4.620728156243148,
192 };
193 }
194};
195
200public:
203 consensus.signet_blocks = false;
206 consensus.script_flag_exceptions.emplace( // BIP16 exception
207 uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
208 consensus.BIP34Height = 21111;
209 consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
210 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
211 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
212 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
213 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
214 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
215 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
216 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
219 consensus.enforce_BIP94 = false;
224 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
227
228 // Deployment of Taproot (BIPs 340-342)
230 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
231 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
232 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
235
236 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000015f5e0c9f13455b0eb17"};
237 consensus.defaultAssumeValid = uint256{"00000000000003fc7967410ba2d0a8a8d50daedc318d43e8baf1a9782c236a57"}; // 3974606
238
239 pchMessageStart[0] = 0x0b;
240 pchMessageStart[1] = 0x11;
241 pchMessageStart[2] = 0x09;
242 pchMessageStart[3] = 0x07;
243 nDefaultPort = 18333;
244 nPruneAfterHeight = 1000;
247
248 genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
250 assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
251 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
252
253 vFixedSeeds.clear();
254 vSeeds.clear();
255 // nodes with support for servicebits filtering should be at the top
256 vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
257 vSeeds.emplace_back("seed.tbtc.petertodd.net.");
258 vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
259 vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
260 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
261
262 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
263 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
264 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
265 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
266 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
267
268 bech32_hrp = "tb";
269
270 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
271
273 m_is_mockable_chain = false;
274
276 {
277 .height = 2'500'000,
278 .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
279 .m_chain_tx_count = 66484552,
280 .blockhash = consteval_ctor(uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"}),
281 }
282 };
283
285 // Data from RPC: getchaintxstats 4096 00000000000003fc7967410ba2d0a8a8d50daedc318d43e8baf1a9782c236a57
286 .nTime = 1741042082,
287 .tx_count = 475477615,
288 .dTxRate = 17.15933950357594,
289 };
290 }
291};
292
297public:
300 consensus.signet_blocks = false;
310 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
311 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
316
320 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
323
324 // Deployment of Taproot (BIPs 340-342)
328 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
331
332 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000001d6dce8651b6094e4c1"};
333 consensus.defaultAssumeValid = uint256{"0000000000003ed4f08dbdf6f7d6b271a6bcffce25675cb40aa9fa43179a89f3"}; // 72600
334
335 pchMessageStart[0] = 0x1c;
336 pchMessageStart[1] = 0x16;
337 pchMessageStart[2] = 0x3f;
338 pchMessageStart[3] = 0x28;
339 nDefaultPort = 48333;
340 nPruneAfterHeight = 1000;
343
344 const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
345 const CScript testnet4_genesis_script = CScript() << "000000000000000000000000000000000000000000000000000000000000000000"_hex << OP_CHECKSIG;
346 genesis = CreateGenesisBlock(testnet4_genesis_msg,
347 testnet4_genesis_script,
348 1714777860,
349 393743547,
350 0x1d00ffff,
351 1,
352 50 * COIN);
354 assert(consensus.hashGenesisBlock == uint256{"00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"});
355 assert(genesis.hashMerkleRoot == uint256{"7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"});
356
357 vFixedSeeds.clear();
358 vSeeds.clear();
359 // nodes with support for servicebits filtering should be at the top
360 vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
361 vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
362
363 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
364 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
365 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
366 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
367 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
368
369 bech32_hrp = "tb";
370
371 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
372
374 m_is_mockable_chain = false;
375
377 {}
378 };
379
381 // Data from RPC: getchaintxstats 4096 0000000000003ed4f08dbdf6f7d6b271a6bcffce25675cb40aa9fa43179a89f3
382 .nTime = 1741070246,
383 .tx_count = 7653966,
384 .dTxRate = 1.239174414591965,
385 };
386 }
387};
388
393public:
394 explicit SigNetParams(const SigNetOptions& options)
395 {
396 std::vector<uint8_t> bin;
397 vFixedSeeds.clear();
398 vSeeds.clear();
399
400 if (!options.challenge) {
401 bin = "512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae"_hex_v_u8;
402 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_signet), std::end(chainparams_seed_signet));
403 vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
404 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
405
406 consensus.nMinimumChainWork = uint256{"000000000000000000000000000000000000000000000000000002b517f3d1a1"};
407 consensus.defaultAssumeValid = uint256{"000000895a110f46e59eb82bbc5bfb67fa314656009c295509c21b4999f5180a"}; // 237722
411 // Data from RPC: getchaintxstats 4096 000000895a110f46e59eb82bbc5bfb67fa314656009c295509c21b4999f5180a
412 .nTime = 1741019645,
413 .tx_count = 16540736,
414 .dTxRate = 1.064918879911595,
415 };
416 } else {
417 bin = *options.challenge;
423 0,
424 0,
425 0,
426 };
427 LogPrintf("Signet with challenge %s\n", HexStr(bin));
428 }
429
430 if (options.seeds) {
431 vSeeds = *options.seeds;
432 }
433
436 consensus.signet_challenge.assign(bin.begin(), bin.end());
444 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
447 consensus.enforce_BIP94 = false;
450 consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
454 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
457
458 // Activation of Taproot (BIPs 340-342)
462 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
465
466 // message start is defined as the first 4 bytes of the sha256d of the block script
467 HashWriter h{};
469 uint256 hash = h.GetHash();
470 std::copy_n(hash.begin(), 4, pchMessageStart.begin());
471
472 nDefaultPort = 38333;
473 nPruneAfterHeight = 1000;
474
475 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
477 assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
478 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
479
481 {
482 .height = 160'000,
483 .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
484 .m_chain_tx_count = 2289496,
485 .blockhash = consteval_ctor(uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"}),
486 }
487 };
488
489 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
490 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
491 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
492 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
493 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
494
495 bech32_hrp = "tb";
496
498 m_is_mockable_chain = false;
499 }
500};
501
507{
508public:
509 explicit CRegTestParams(const RegTestOptions& opts)
510 {
512 consensus.signet_blocks = false;
515 consensus.BIP34Height = 1; // Always active unless overridden
517 consensus.BIP65Height = 1; // Always active unless overridden
518 consensus.BIP66Height = 1; // Always active unless overridden
519 consensus.CSVHeight = 1; // Always active unless overridden
520 consensus.SegwitHeight = 0; // Always active unless overridden
522 consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
523 consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
528
532 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
534 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 144; // Faster than normal for regtest (144 instead of 2016)
535
539 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
542
545
546 pchMessageStart[0] = 0xfa;
547 pchMessageStart[1] = 0xbf;
548 pchMessageStart[2] = 0xb5;
549 pchMessageStart[3] = 0xda;
550 nDefaultPort = 18444;
551 nPruneAfterHeight = opts.fastprune ? 100 : 1000;
554
555 for (const auto& [dep, height] : opts.activation_heights) {
556 switch (dep) {
558 consensus.SegwitHeight = int{height};
559 break;
561 consensus.BIP34Height = int{height};
562 break;
564 consensus.BIP66Height = int{height};
565 break;
567 consensus.BIP65Height = int{height};
568 break;
570 consensus.CSVHeight = int{height};
571 break;
572 }
573 }
574
575 for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
576 consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
577 consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
578 consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
579 }
580
581 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
583 assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
584 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
585
586 vFixedSeeds.clear();
587 vSeeds.clear();
588 vSeeds.emplace_back("dummySeed.invalid.");
589
591 m_is_mockable_chain = true;
592
594 { // For use by unit tests
595 .height = 110,
596 .hash_serialized = AssumeutxoHash{uint256{"6657b736d4fe4db0cbc796789e812d5dba7f5c143764b1b6905612f1830609d1"}},
597 .m_chain_tx_count = 111,
598 .blockhash = consteval_ctor(uint256{"696e92821f65549c7ee134edceeeeaaa4105647a3c4fd9f298c0aec0ab50425c"}),
599 },
600 {
601 // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
602 .height = 200,
603 .hash_serialized = AssumeutxoHash{uint256{"7e3b7780fbd2fa479a01f66950dc8f728dc1b11f03d06d5bf223168520df3a48"}},
604 .m_chain_tx_count = 201,
605 .blockhash = consteval_ctor(uint256{"5e93653318f294fb5aa339d00bbf8cf1c3515488ad99412c37608b139ea63b27"}),
606 },
607 {
608 // For use by test/functional/feature_assumeutxo.py
609 .height = 299,
610 .hash_serialized = AssumeutxoHash{uint256{"a4bf3407ccb2cc0145c49ebba8fa91199f8a3903daf0883875941497d2493c27"}},
611 .m_chain_tx_count = 334,
612 .blockhash = consteval_ctor(uint256{"3bb7ce5eba0be48939b7a521ac1ba9316afee2c7bada3a0cca24188e6d7d96c0"}),
613 },
614 };
615
617 0,
618 0,
619 0
620 };
621
622 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
623 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
624 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
625 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
626 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
627
628 bech32_hrp = "bcrt";
629 }
630};
631
632std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
633{
634 return std::make_unique<const SigNetParams>(options);
635}
636
637std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
638{
639 return std::make_unique<const CRegTestParams>(options);
640}
641
642std::unique_ptr<const CChainParams> CChainParams::Main()
643{
644 return std::make_unique<const CMainParams>();
645}
646
647std::unique_ptr<const CChainParams> CChainParams::TestNet()
648{
649 return std::make_unique<const CTestNetParams>();
650}
651
652std::unique_ptr<const CChainParams> CChainParams::TestNet4()
653{
654 return std::make_unique<const CTestNet4Params>();
655}
656
658{
659 std::vector<int> heights;
660 heights.reserve(m_assumeutxo_data.size());
661
662 for (const auto& data : m_assumeutxo_data) {
663 heights.emplace_back(data.height);
664 }
665 return heights;
666}
667
668std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
669{
670 const auto mainnet_msg = CChainParams::Main()->MessageStart();
671 const auto testnet_msg = CChainParams::TestNet()->MessageStart();
672 const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
673 const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
674 const auto signet_msg = CChainParams::SigNet({})->MessageStart();
675
676 if (std::ranges::equal(message, mainnet_msg)) {
677 return ChainType::MAIN;
678 } else if (std::ranges::equal(message, testnet_msg)) {
679 return ChainType::TESTNET;
680 } else if (std::ranges::equal(message, testnet4_msg)) {
681 return ChainType::TESTNET4;
682 } else if (std::ranges::equal(message, regtest_msg)) {
683 return ChainType::REGTEST;
684 } else if (std::ranges::equal(message, signet_msg)) {
685 return ChainType::SIGNET;
686 }
687 return std::nullopt;
688}
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:101
constexpr void SetNull()
Definition: uint256.h:55
256-bit opaque blob.
Definition: uint256.h:196
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:35
@ DEPLOYMENT_TESTDUMMY
Definition: params.h:34
@ DEPLOYMENT_DERSIG
Definition: params.h:27
@ DEPLOYMENT_CSV
Definition: params.h:28
@ DEPLOYMENT_SEGWIT
Definition: params.h:29
@ DEPLOYMENT_HEIGHTINCB
Definition: params.h:25
@ DEPLOYMENT_CLTV
Definition: params.h:26
""_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
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:72
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition: params.h:77
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:66
bool enforce_BIP94
Enforce BIP94 timewarp attack mitigation.
Definition: params.h:117
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:97
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:101
uint256 BIP34Hash
Definition: params.h:95
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:129
std::map< uint256, uint32_t > script_flag_exceptions
Hashes of blocks that.
Definition: params.h:92
std::vector< uint8_t > signet_challenge
Definition: params.h:136
bool signet_blocks
If true, witness commitments contain a payload equal to a Bitcoin Script solution to the signet chall...
Definition: params.h:135
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:105
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:94
int nSubsidyHalvingInterval
Definition: params.h:85
uint256 hashGenesisBlock
Definition: params.h:84
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition: params.h:108
bool fPowNoRetargeting
Definition: params.h:118
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:127
int64_t nPowTargetTimespan
Definition: params.h:120
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:99
uint256 powLimit
Proof of work parameters.
Definition: params.h:111
std::array< BIP9Deployment, MAX_VERSION_BITS_DEPLOYMENTS > vDeployments
Definition: params.h:109
int64_t nPowTargetSpacing
Definition: params.h:119
bool fPowAllowMinDifficultyBlocks
Definition: params.h:112
assert(!tx.IsCoinBase())