Bitcoin Core 30.99.0
P2P Digital Currency
chainparams.cpp
Go to the documentation of this file.
1// Copyright (c) 2010 Satoshi Nakamoto
2// Copyright (c) 2009-present 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 <kernel/chainparams.h>
7
8#include <chainparamsseeds.h>
9#include <consensus/amount.h>
10#include <consensus/merkle.h>
11#include <consensus/params.h>
12#include <hash.h>
13#include <kernel/messagestartchars.h>
14#include <logging.h>
15#include <primitives/block.h>
16#include <primitives/transaction.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// https://developercommunity.visualstudio.com/t/Bogus-C7595-error-on-valid-C20-code/10906093
34#if defined(_MSC_VER)
35auto consteval_ctor(auto&& input) { return input; }
36#else
37#define consteval_ctor(input) (input)
38#endif
39
40static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
41{
42 CMutableTransaction txNew;
43 txNew.version = 1;
44 txNew.vin.resize(1);
45 txNew.vout.resize(1);
46 txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
47 txNew.vout[0].nValue = genesisReward;
48 txNew.vout[0].scriptPubKey = genesisOutputScript;
49
50 CBlock genesis;
51 genesis.nTime = nTime;
52 genesis.nBits = nBits;
53 genesis.nNonce = nNonce;
54 genesis.nVersion = nVersion;
55 genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
56 genesis.hashPrevBlock.SetNull();
57 genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
58 return genesis;
59}
60
72static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
73{
74 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
75 const CScript genesisOutputScript = CScript() << "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"_hex << OP_CHECKSIG;
76 return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
77}
78
82class CMainParams : public CChainParams {
83public:
84 CMainParams() {
85 m_chain_type = ChainType::MAIN;
86 consensus.signet_blocks = false;
87 consensus.signet_challenge.clear();
88 consensus.nSubsidyHalvingInterval = 210000;
89 consensus.script_flag_exceptions.emplace( // BIP16 exception
90 uint256{"00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"}, SCRIPT_VERIFY_NONE);
91 consensus.script_flag_exceptions.emplace( // Taproot exception
92 uint256{"0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"}, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
93 consensus.BIP34Height = 227931;
94 consensus.BIP34Hash = uint256{"000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"};
95 consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
96 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
97 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
98 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
99 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
100 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
101 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
102 consensus.nPowTargetSpacing = 10 * 60;
103 consensus.fPowAllowMinDifficultyBlocks = false;
104 consensus.enforce_BIP94 = false;
105 consensus.fPowNoRetargeting = false;
106 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
107 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
108 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
109 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
110 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
111 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
112
113 // Deployment of Taproot (BIPs 340-342)
114 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
115 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
116 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
117 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
118 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1815; // 90%
119 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
120
121 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000dee8e2a309ad8a9820433c68"};
122 consensus.defaultAssumeValid = uint256{"00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb"}; // 912683
123
129 pchMessageStart[0] = 0xf9;
130 pchMessageStart[1] = 0xbe;
131 pchMessageStart[2] = 0xb4;
132 pchMessageStart[3] = 0xd9;
133 nDefaultPort = 8333;
134 nPruneAfterHeight = 100000;
135 m_assumed_blockchain_size = 810;
136 m_assumed_chain_state_size = 14;
137
138 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
139 consensus.hashGenesisBlock = genesis.GetHash();
140 assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
141 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
142
143 // Note that of those which support the service bits prefix, most only support a subset of
144 // possible options.
145 // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
146 // service bits we want, but we should get them updated to support all service bits wanted by any
147 // release ASAP to avoid it where possible.
148 vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
149 vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
150 vSeeds.emplace_back("dnsseed.bitcoin.dashjr-list-of-p2p-nodes.us."); // Luke Dashjr
151 vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
152 vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
153 vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
154 vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
155 vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
156 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
157
158 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
159 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
160 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
161 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
162 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
163
164 bech32_hrp = "bc";
165
166 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
167
168 fDefaultConsistencyChecks = false;
169 m_is_mockable_chain = false;
170
171 m_assumeutxo_data = {
172 {
173 .height = 840'000,
174 .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
175 .m_chain_tx_count = 991032194,
176 .blockhash = consteval_ctor(uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"}),
177 },
178 {
179 .height = 880'000,
180 .hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
181 .m_chain_tx_count = 1145604538,
182 .blockhash = consteval_ctor(uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"}),
183 },
184 {
185 .height = 910'000,
186 .hash_serialized = AssumeutxoHash{uint256{"4daf8a17b4902498c5787966a2b51c613acdab5df5db73f196fa59a4da2f1568"}},
187 .m_chain_tx_count = 1226586151,
188 .blockhash = consteval_ctor(uint256{"0000000000000000000108970acb9522ffd516eae17acddcb1bd16469194a821"}),
189 }
190 };
191
192 chainTxData = ChainTxData{
193 // Data from RPC: getchaintxstats 4096 00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb
194 .nTime = 1756722903,
195 .tx_count = 1235299397,
196 .dTxRate = 5.456290459519495,
197 };
198 }
199};
200
204class CTestNetParams : public CChainParams {
205public:
206 CTestNetParams() {
207 m_chain_type = ChainType::TESTNET;
208 consensus.signet_blocks = false;
209 consensus.signet_challenge.clear();
210 consensus.nSubsidyHalvingInterval = 210000;
211 consensus.script_flag_exceptions.emplace( // BIP16 exception
212 uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
213 consensus.BIP34Height = 21111;
214 consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
215 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
216 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
217 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
218 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
219 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
220 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
221 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
222 consensus.nPowTargetSpacing = 10 * 60;
223 consensus.fPowAllowMinDifficultyBlocks = true;
224 consensus.enforce_BIP94 = false;
225 consensus.fPowNoRetargeting = false;
226 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
227 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
228 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
229 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
230 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
231 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
232
233 // Deployment of Taproot (BIPs 340-342)
234 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
235 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
236 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
237 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
238 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1512; // 75%
239 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
240
241 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000016dd270dd94fac1d7632"};
242 consensus.defaultAssumeValid = uint256{"0000000000000065c6c38258e201971a3fdfcc2ceee0dd6e85a6c022d45dee34"}; // 4550000
243
244 pchMessageStart[0] = 0x0b;
245 pchMessageStart[1] = 0x11;
246 pchMessageStart[2] = 0x09;
247 pchMessageStart[3] = 0x07;
248 nDefaultPort = 18333;
249 nPruneAfterHeight = 1000;
250 m_assumed_blockchain_size = 240;
251 m_assumed_chain_state_size = 19;
252
253 genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
254 consensus.hashGenesisBlock = genesis.GetHash();
255 assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
256 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
257
258 vFixedSeeds.clear();
259 vSeeds.clear();
260 // nodes with support for servicebits filtering should be at the top
261 vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
262 vSeeds.emplace_back("seed.tbtc.petertodd.net.");
263 vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
264 vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
265 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
266
267 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
268 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
269 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
270 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
271 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
272
273 bech32_hrp = "tb";
274
275 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
276
277 fDefaultConsistencyChecks = false;
278 m_is_mockable_chain = false;
279
280 m_assumeutxo_data = {
281 {
282 .height = 2'500'000,
283 .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
284 .m_chain_tx_count = 66484552,
285 .blockhash = consteval_ctor(uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"}),
286 }
287 };
288
289 chainTxData = ChainTxData{
290 // Data from RPC: getchaintxstats 4096 0000000000000065c6c38258e201971a3fdfcc2ceee0dd6e85a6c022d45dee34
291 .nTime = 1751816758,
292 .tx_count = 508468699,
293 .dTxRate = 7.172978845985714,
294 };
295 }
296};
297
301class CTestNet4Params : public CChainParams {
302public:
303 CTestNet4Params() {
304 m_chain_type = ChainType::TESTNET4;
305 consensus.signet_blocks = false;
306 consensus.signet_challenge.clear();
307 consensus.nSubsidyHalvingInterval = 210000;
308 consensus.BIP34Height = 1;
309 consensus.BIP34Hash = uint256{};
310 consensus.BIP65Height = 1;
311 consensus.BIP66Height = 1;
312 consensus.CSVHeight = 1;
313 consensus.SegwitHeight = 1;
314 consensus.MinBIP9WarningHeight = 0;
315 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
316 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
317 consensus.nPowTargetSpacing = 10 * 60;
318 consensus.fPowAllowMinDifficultyBlocks = true;
319 consensus.enforce_BIP94 = true;
320 consensus.fPowNoRetargeting = false;
321
322 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
323 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
324 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
325 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
326 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
327 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
328
329 // Deployment of Taproot (BIPs 340-342)
330 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
331 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
332 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
333 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
334 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1512; // 75%
335 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
336
337 consensus.nMinimumChainWork = uint256{"00000000000000000000000000000000000000000000034a4690fe592dc49c7c"};
338 consensus.defaultAssumeValid = uint256{"000000000000000180a58e7fa3b0db84b5ea76377524894f53660d93ac839d9b"}; // 91000
339
340 pchMessageStart[0] = 0x1c;
341 pchMessageStart[1] = 0x16;
342 pchMessageStart[2] = 0x3f;
343 pchMessageStart[3] = 0x28;
344 nDefaultPort = 48333;
345 nPruneAfterHeight = 1000;
346 m_assumed_blockchain_size = 22;
347 m_assumed_chain_state_size = 2;
348
349 const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
350 const CScript testnet4_genesis_script = CScript() << "000000000000000000000000000000000000000000000000000000000000000000"_hex << OP_CHECKSIG;
351 genesis = CreateGenesisBlock(testnet4_genesis_msg,
352 testnet4_genesis_script,
353 1714777860,
354 393743547,
355 0x1d00ffff,
356 1,
357 50 * COIN);
358 consensus.hashGenesisBlock = genesis.GetHash();
359 assert(consensus.hashGenesisBlock == uint256{"00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"});
360 assert(genesis.hashMerkleRoot == uint256{"7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"});
361
362 vFixedSeeds.clear();
363 vSeeds.clear();
364 // nodes with support for servicebits filtering should be at the top
365 vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
366 vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
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 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
377
378 fDefaultConsistencyChecks = false;
379 m_is_mockable_chain = false;
380
381 m_assumeutxo_data = {
382 {
383 .height = 90'000,
384 .hash_serialized = AssumeutxoHash{uint256{"784fb5e98241de66fdd429f4392155c9e7db5c017148e66e8fdbc95746f8b9b5"}},
385 .m_chain_tx_count = 11347043,
386 .blockhash = consteval_ctor(uint256{"0000000002ebe8bcda020e0dd6ccfbdfac531d2f6a81457191b99fc2df2dbe3b"}),
387 }
388 };
389
390 chainTxData = ChainTxData{
391 // Data from RPC: getchaintxstats 4096 000000000000000180a58e7fa3b0db84b5ea76377524894f53660d93ac839d9b
392 .nTime = 1752470331,
393 .tx_count = 11414302,
394 .dTxRate = 0.2842619757327476,
395 };
396 }
397};
398
402class SigNetParams : public CChainParams {
403public:
404 explicit SigNetParams(const SigNetOptions& options)
405 {
406 std::vector<uint8_t> bin;
407 vFixedSeeds.clear();
408 vSeeds.clear();
409
410 if (!options.challenge) {
411 bin = "512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae"_hex_v_u8;
412 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_signet), std::end(chainparams_seed_signet));
413 vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
414 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
415
416 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000000000000067d328e681a"};
417 consensus.defaultAssumeValid = uint256{"000000128586e26813922680309f04e1de713c7542fee86ed908f56368aefe2e"}; // 267665
418 m_assumed_blockchain_size = 20;
419 m_assumed_chain_state_size = 4;
420 chainTxData = ChainTxData{
421 // Data from RPC: getchaintxstats 4096 000000128586e26813922680309f04e1de713c7542fee86ed908f56368aefe2e
422 .nTime = 1756723017,
423 .tx_count = 26185472,
424 .dTxRate = 0.7452721495389969,
425 };
426 } else {
427 bin = *options.challenge;
428 consensus.nMinimumChainWork = uint256{};
429 consensus.defaultAssumeValid = uint256{};
430 m_assumed_blockchain_size = 0;
431 m_assumed_chain_state_size = 0;
432 chainTxData = ChainTxData{
433 0,
434 0,
435 0,
436 };
437 LogInfo("Signet with challenge %s", HexStr(bin));
438 }
439
440 if (options.seeds) {
441 vSeeds = *options.seeds;
442 }
443
444 m_chain_type = ChainType::SIGNET;
445 consensus.signet_blocks = true;
446 consensus.signet_challenge.assign(bin.begin(), bin.end());
447 consensus.nSubsidyHalvingInterval = 210000;
448 consensus.BIP34Height = 1;
449 consensus.BIP34Hash = uint256{};
450 consensus.BIP65Height = 1;
451 consensus.BIP66Height = 1;
452 consensus.CSVHeight = 1;
453 consensus.SegwitHeight = 1;
454 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
455 consensus.nPowTargetSpacing = 10 * 60;
456 consensus.fPowAllowMinDifficultyBlocks = false;
457 consensus.enforce_BIP94 = false;
458 consensus.fPowNoRetargeting = false;
459 consensus.MinBIP9WarningHeight = 0;
460 consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
461 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
462 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
463 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
464 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
465 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
466 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
467
468 // Activation of Taproot (BIPs 340-342)
469 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
470 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
471 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
472 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
473 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1815; // 90%
474 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
475
476 // message start is defined as the first 4 bytes of the sha256d of the block script
477 HashWriter h{};
478 h << consensus.signet_challenge;
479 uint256 hash = h.GetHash();
480 std::copy_n(hash.begin(), 4, pchMessageStart.begin());
481
482 nDefaultPort = 38333;
483 nPruneAfterHeight = 1000;
484
485 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
486 consensus.hashGenesisBlock = genesis.GetHash();
487 assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
488 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
489
490 m_assumeutxo_data = {
491 {
492 .height = 160'000,
493 .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
494 .m_chain_tx_count = 2289496,
495 .blockhash = consteval_ctor(uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"}),
496 }
497 };
498
499 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
500 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
501 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
502 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
503 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
504
505 bech32_hrp = "tb";
506
507 fDefaultConsistencyChecks = false;
508 m_is_mockable_chain = false;
509 }
510};
511
516class CRegTestParams : public CChainParams
517{
518public:
519 explicit CRegTestParams(const RegTestOptions& opts)
520 {
521 m_chain_type = ChainType::REGTEST;
522 consensus.signet_blocks = false;
523 consensus.signet_challenge.clear();
524 consensus.nSubsidyHalvingInterval = 150;
525 consensus.BIP34Height = 1; // Always active unless overridden
526 consensus.BIP34Hash = uint256();
527 consensus.BIP65Height = 1; // Always active unless overridden
528 consensus.BIP66Height = 1; // Always active unless overridden
529 consensus.CSVHeight = 1; // Always active unless overridden
530 consensus.SegwitHeight = 0; // Always active unless overridden
531 consensus.MinBIP9WarningHeight = 0;
532 consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
533 consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
534 consensus.nPowTargetSpacing = 10 * 60;
535 consensus.fPowAllowMinDifficultyBlocks = true;
536 consensus.enforce_BIP94 = opts.enforce_bip94;
537 consensus.fPowNoRetargeting = true;
538
539 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
540 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
541 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
542 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
543 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 108; // 75%
544 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 144; // Faster than normal for regtest (144 instead of 2016)
545
546 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
547 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
548 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
549 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
550 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 108; // 75%
551 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 144;
552
553 consensus.nMinimumChainWork = uint256{};
554 consensus.defaultAssumeValid = uint256{};
555
556 pchMessageStart[0] = 0xfa;
557 pchMessageStart[1] = 0xbf;
558 pchMessageStart[2] = 0xb5;
559 pchMessageStart[3] = 0xda;
560 nDefaultPort = 18444;
561 nPruneAfterHeight = opts.fastprune ? 100 : 1000;
562 m_assumed_blockchain_size = 0;
563 m_assumed_chain_state_size = 0;
564
565 for (const auto& [dep, height] : opts.activation_heights) {
566 switch (dep) {
567 case Consensus::BuriedDeployment::DEPLOYMENT_SEGWIT:
568 consensus.SegwitHeight = int{height};
569 break;
570 case Consensus::BuriedDeployment::DEPLOYMENT_HEIGHTINCB:
571 consensus.BIP34Height = int{height};
572 break;
573 case Consensus::BuriedDeployment::DEPLOYMENT_DERSIG:
574 consensus.BIP66Height = int{height};
575 break;
576 case Consensus::BuriedDeployment::DEPLOYMENT_CLTV:
577 consensus.BIP65Height = int{height};
578 break;
579 case Consensus::BuriedDeployment::DEPLOYMENT_CSV:
580 consensus.CSVHeight = int{height};
581 break;
582 }
583 }
584
585 for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
586 consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
587 consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
588 consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
589 }
590
591 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
592 consensus.hashGenesisBlock = genesis.GetHash();
593 assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
594 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
595
596 vFixedSeeds.clear();
597 vSeeds.clear();
598 vSeeds.emplace_back("dummySeed.invalid.");
599
600 fDefaultConsistencyChecks = true;
601 m_is_mockable_chain = true;
602
603 m_assumeutxo_data = {
604 { // For use by unit tests
605 .height = 110,
606 .hash_serialized = AssumeutxoHash{uint256{"b952555c8ab81fec46f3d4253b7af256d766ceb39fb7752b9d18cdf4a0141327"}},
607 .m_chain_tx_count = 111,
608 .blockhash = consteval_ctor(uint256{"6affe030b7965ab538f820a56ef56c8149b7dc1d1c144af57113be080db7c397"}),
609 },
610 {
611 // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
612 .height = 200,
613 .hash_serialized = AssumeutxoHash{uint256{"17dcc016d188d16068907cdeb38b75691a118d43053b8cd6a25969419381d13a"}},
614 .m_chain_tx_count = 201,
615 .blockhash = consteval_ctor(uint256{"385901ccbd69dff6bbd00065d01fb8a9e464dede7cfe0372443884f9b1dcf6b9"}),
616 },
617 {
618 // For use by test/functional/feature_assumeutxo.py
619 .height = 299,
620 .hash_serialized = AssumeutxoHash{uint256{"d2b051ff5e8eef46520350776f4100dd710a63447a8e01d917e92e79751a63e2"}},
621 .m_chain_tx_count = 334,
622 .blockhash = consteval_ctor(uint256{"7cc695046fec709f8c9394b6f928f81e81fd3ac20977bb68760fa1faa7916ea2"}),
623 },
624 };
625
626 chainTxData = ChainTxData{
627 .nTime = 0,
628 .tx_count = 0,
629 .dTxRate = 0.001, // Set a non-zero rate to make it testable
630 };
631
632 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
633 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
634 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
635 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
636 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
637
638 bech32_hrp = "bcrt";
639 }
640};
641
642std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
643{
644 return std::make_unique<const SigNetParams>(options);
645}
646
647std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
648{
649 return std::make_unique<const CRegTestParams>(options);
650}
651
652std::unique_ptr<const CChainParams> CChainParams::Main()
653{
654 return std::make_unique<const CMainParams>();
655}
656
657std::unique_ptr<const CChainParams> CChainParams::TestNet()
658{
659 return std::make_unique<const CTestNetParams>();
660}
661
662std::unique_ptr<const CChainParams> CChainParams::TestNet4()
663{
664 return std::make_unique<const CTestNet4Params>();
665}
666
667std::vector<int> CChainParams::GetAvailableSnapshotHeights() const
668{
669 std::vector<int> heights;
670 heights.reserve(m_assumeutxo_data.size());
671
672 for (const auto& data : m_assumeutxo_data) {
673 heights.emplace_back(data.height);
674 }
675 return heights;
676}
677
678std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
679{
680 const auto mainnet_msg = CChainParams::Main()->MessageStart();
681 const auto testnet_msg = CChainParams::TestNet()->MessageStart();
682 const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
683 const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
684 const auto signet_msg = CChainParams::SigNet({})->MessageStart();
685
686 if (std::ranges::equal(message, mainnet_msg)) {
687 return ChainType::MAIN;
688 } else if (std::ranges::equal(message, testnet_msg)) {
689 return ChainType::TESTNET;
690 } else if (std::ranges::equal(message, testnet4_msg)) {
691 return ChainType::TESTNET4;
692 } else if (std::ranges::equal(message, regtest_msg)) {
693 return ChainType::REGTEST;
694 } else if (std::ranges::equal(message, signet_msg)) {
695 return ChainType::SIGNET;
696 }
697 return std::nullopt;
698}
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
chainparams_seed_test
static const uint8_t chainparams_seed_test[]
Definition: chainparamsseeds.h:987
chainparams_seed_signet
static const uint8_t chainparams_seed_signet[]
Definition: chainparamsseeds.h:861
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
chainparams_seed_testnet4
static const uint8_t chainparams_seed_testnet4[]
Definition: chainparamsseeds.h:1169
CBlockHeader::nNonce
uint32_t nNonce
Definition: block.h:30
CBlockHeader::nBits
uint32_t nBits
Definition: block.h:29
CBlockHeader::nTime
uint32_t nTime
Definition: block.h:28
CBlockHeader::nVersion
int32_t nVersion
Definition: block.h:25
CBlockHeader::hashPrevBlock
uint256 hashPrevBlock
Definition: block.h:26
CBlockHeader::hashMerkleRoot
uint256 hashMerkleRoot
Definition: block.h:27
CBlockHeader::GetHash
uint256 GetHash() const
Definition: block.cpp:11
CBlock
Definition: block.h:69
CBlock::vtx
std::vector< CTransactionRef > vtx
Definition: block.h:72
CChainParams
CChainParams defines various tweakable parameters of a given instance of the Bitcoin system.
Definition: chainparams.h:69
CChainParams::m_assumed_chain_state_size
uint64_t m_assumed_chain_state_size
Definition: chainparams.h:162
CChainParams::pchMessageStart
MessageStartChars pchMessageStart
Definition: chainparams.h:158
CChainParams::Main
static std::unique_ptr< const CChainParams > Main()
Definition: chainparams.cpp:652
CChainParams::bech32_hrp
std::string bech32_hrp
Definition: chainparams.h:165
CChainParams::GetAvailableSnapshotHeights
std::vector< int > GetAvailableSnapshotHeights() const
Definition: chainparams.cpp:667
CChainParams::RegTest
static std::unique_ptr< const CChainParams > RegTest(const RegTestOptions &options)
Definition: chainparams.cpp:647
CChainParams::genesis
CBlock genesis
Definition: chainparams.h:167
CChainParams::m_assumed_blockchain_size
uint64_t m_assumed_blockchain_size
Definition: chainparams.h:161
CChainParams::vFixedSeeds
std::vector< uint8_t > vFixedSeeds
Definition: chainparams.h:168
CChainParams::fDefaultConsistencyChecks
bool fDefaultConsistencyChecks
Definition: chainparams.h:169
CChainParams::TestNet
static std::unique_ptr< const CChainParams > TestNet()
Definition: chainparams.cpp:657
CChainParams::base58Prefixes
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:164
CChainParams::consensus
Consensus::Params consensus
Definition: chainparams.h:157
CChainParams::m_assumeutxo_data
std::vector< AssumeutxoData > m_assumeutxo_data
Definition: chainparams.h:171
CChainParams::vSeeds
std::vector< std::string > vSeeds
Definition: chainparams.h:163
CChainParams::m_is_mockable_chain
bool m_is_mockable_chain
Definition: chainparams.h:170
CChainParams::TestNet4
static std::unique_ptr< const CChainParams > TestNet4()
Definition: chainparams.cpp:662
CChainParams::m_chain_type
ChainType m_chain_type
Definition: chainparams.h:166
CChainParams::nDefaultPort
uint16_t nDefaultPort
Definition: chainparams.h:159
CChainParams::SigNet
static std::unique_ptr< const CChainParams > SigNet(const SigNetOptions &options)
Definition: chainparams.cpp:642
CChainParams::nPruneAfterHeight
uint64_t nPruneAfterHeight
Definition: chainparams.h:160
CChainParams::chainTxData
ChainTxData chainTxData
Definition: chainparams.h:172
CMainParams
Main network on which people trade goods and services.
Definition: chainparams.cpp:82
CRegTestParams
Regression test: intended for private networks only.
Definition: chainparams.cpp:517
CRegTestParams::CRegTestParams
CRegTestParams(const RegTestOptions &opts)
Definition: chainparams.cpp:519
CScript
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:413
CTestNet4Params
Testnet (v4): public test network which is reset from time to time.
Definition: chainparams.cpp:301
CTestNetParams
Testnet (v3): public test network which is reset from time to time.
Definition: chainparams.cpp:204
HashWriter
A writer stream (for serialization) that computes a 256-bit hash.
Definition: hash.h:101
SigNetParams
Signet: test network with an additional consensus parameter (see BIP325).
Definition: chainparams.cpp:402
SigNetParams::SigNetParams
SigNetParams(const SigNetOptions &options)
Definition: chainparams.cpp:404
base_blob::begin
constexpr unsigned char * begin()
Definition: uint256.h:101
base_blob::SetNull
constexpr void SetNull()
Definition: uint256.h:55
uint256
256-bit opaque blob.
Definition: uint256.h:196
BlockMerkleRoot
uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition: merkle.cpp:66
HexStr
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
@ SCRIPT_VERIFY_P2SH
Definition: interpreter.h:49
SCRIPT_VERIFY_WITNESS
@ SCRIPT_VERIFY_WITNESS
Definition: interpreter.h:108
SCRIPT_VERIFY_NONE
@ SCRIPT_VERIFY_NONE
Definition: interpreter.h:46
consteval_ctor
#define consteval_ctor(input)
Definition: chainparams.cpp:37
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:40
GetNetworkForMagic
std::optional< ChainType > GetNetworkForMagic(const MessageStartChars &message)
Definition: chainparams.cpp:678
LogInfo
#define LogInfo(...)
Definition: logging.h:356
MessageStartChars
std::array< uint8_t, 4 > MessageStartChars
Definition: messagestartchars.h:11
Consensus::DEPLOYMENT_TAPROOT
@ DEPLOYMENT_TAPROOT
Definition: params.h:35
Consensus::DEPLOYMENT_TESTDUMMY
@ DEPLOYMENT_TESTDUMMY
Definition: params.h:34
Consensus::DEPLOYMENT_DERSIG
@ DEPLOYMENT_DERSIG
Definition: params.h:27
Consensus::DEPLOYMENT_CSV
@ DEPLOYMENT_CSV
Definition: params.h:28
Consensus::DEPLOYMENT_SEGWIT
@ DEPLOYMENT_SEGWIT
Definition: params.h:29
Consensus::DEPLOYMENT_HEIGHTINCB
@ DEPLOYMENT_HEIGHTINCB
Definition: params.h:25
Consensus::DEPLOYMENT_CLTV
@ DEPLOYMENT_CLTV
Definition: params.h:26
test_vectors_musig2_generate.data
data
Definition: test_vectors_musig2_generate.py:98
util::hex_literals
""_hex is a compile-time user-defined literal returning a std::array<std::byte>, equivalent to ParseH...
Definition: strencodings.h:384
MakeTransactionRef
static CTransactionRef MakeTransactionRef(Tx &&txIn)
Definition: transaction.h:424
OP_CHECKSIG
@ OP_CHECKSIG
Definition: script.h:190
CChainParams::RegTestOptions
RegTestOptions holds configurations for creating a regtest CChainParams.
Definition: chainparams.h:141
CChainParams::RegTestOptions::version_bits_parameters
std::unordered_map< Consensus::DeploymentPos, VersionBitsParameters > version_bits_parameters
Definition: chainparams.h:142
CChainParams::RegTestOptions::activation_heights
std::unordered_map< Consensus::BuriedDeployment, int > activation_heights
Definition: chainparams.h:143
CChainParams::SigNetOptions
SigNetOptions holds configurations for creating a signet CChainParams.
Definition: chainparams.h:124
CChainParams::SigNetOptions::challenge
std::optional< std::vector< uint8_t > > challenge
Definition: chainparams.h:125
CChainParams::SigNetOptions::seeds
std::optional< std::vector< std::string > > seeds
Definition: chainparams.h:126
CMutableTransaction
A mutable version of CTransaction.
Definition: transaction.h:378
CMutableTransaction::vout
std::vector< CTxOut > vout
Definition: transaction.h:380
CMutableTransaction::vin
std::vector< CTxIn > vin
Definition: transaction.h:379
ChainTxData
Holds various statistics on transactions within a chain.
Definition: chainparams.h:58
ChainTxData::nTime
int64_t nTime
UNIX timestamp of last known number of transactions.
Definition: chainparams.h:59
Consensus::BIP9Deployment::ALWAYS_ACTIVE
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:72
Consensus::BIP9Deployment::NEVER_ACTIVE
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition: params.h:77
Consensus::BIP9Deployment::NO_TIMEOUT
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:66
Consensus::Params::enforce_BIP94
bool enforce_BIP94
Enforce BIP94 timewarp attack mitigation.
Definition: params.h:117
Consensus::Params::BIP65Height
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:97
Consensus::Params::CSVHeight
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:101
Consensus::Params::BIP34Hash
uint256 BIP34Hash
Definition: params.h:95
Consensus::Params::defaultAssumeValid
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:129
Consensus::Params::script_flag_exceptions
std::map< uint256, uint32_t > script_flag_exceptions
Hashes of blocks that.
Definition: params.h:92
Consensus::Params::signet_challenge
std::vector< uint8_t > signet_challenge
Definition: params.h:136
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:135
Consensus::Params::SegwitHeight
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:105
Consensus::Params::BIP34Height
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:94
Consensus::Params::nSubsidyHalvingInterval
int nSubsidyHalvingInterval
Definition: params.h:85
Consensus::Params::hashGenesisBlock
uint256 hashGenesisBlock
Definition: params.h:84
Consensus::Params::MinBIP9WarningHeight
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition: params.h:108
Consensus::Params::fPowNoRetargeting
bool fPowNoRetargeting
Definition: params.h:118
Consensus::Params::nMinimumChainWork
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:127
Consensus::Params::nPowTargetTimespan
int64_t nPowTargetTimespan
Definition: params.h:120
Consensus::Params::BIP66Height
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:99
Consensus::Params::powLimit
uint256 powLimit
Proof of work parameters.
Definition: params.h:111
Consensus::Params::vDeployments
std::array< BIP9Deployment, MAX_VERSION_BITS_DEPLOYMENTS > vDeployments
Definition: params.h:109
Consensus::Params::nPowTargetSpacing
int64_t nPowTargetSpacing
Definition: params.h:119
Consensus::Params::fPowAllowMinDifficultyBlocks
bool fPowAllowMinDifficultyBlocks
Definition: params.h:112
assert
assert(!tx.IsCoinBase())
Generated on Tue Sep 16 2025 20:00:31 for Bitcoin Core by doxygen 1.9.4