Bitcoin Core 30.99.0
P2P Digital Currency
chainparams.cpp
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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 <crypto/hex_base.h>
13#include <hash.h>
14#include <kernel/messagestartchars.h>
15#include <logging.h>
16#include <primitives/block.h>
17#include <primitives/transaction.h>
18#include <script/interpreter.h>
19#include <script/script.h>
20#include <uint256.h>
21#include <util/chaintype.h>
22#include <util/strencodings.h>
23
24#include <algorithm>
25#include <array>
26#include <cassert>
27#include <cstdint>
28#include <cstring>
29#include <iterator>
30#include <map>
31#include <span>
32#include <utility>
33
34using namespace util::hex_literals;
35
36// Workaround MSVC bug triggering C7595 when calling consteval constructors in
37// initializer lists.
38// https://developercommunity.visualstudio.com/t/Bogus-C7595-error-on-valid-C20-code/10906093
39#if defined(_MSC_VER)
40auto consteval_ctor(auto&& input) { return input; }
41#else
42#define consteval_ctor(input) (input)
43#endif
44
45static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
46{
47 CMutableTransaction txNew;
48 txNew.version = 1;
49 txNew.vin.resize(1);
50 txNew.vout.resize(1);
51 txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
52 txNew.vout[0].nValue = genesisReward;
53 txNew.vout[0].scriptPubKey = genesisOutputScript;
54
55 CBlock genesis;
56 genesis.nTime = nTime;
57 genesis.nBits = nBits;
58 genesis.nNonce = nNonce;
59 genesis.nVersion = nVersion;
60 genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
61 genesis.hashPrevBlock.SetNull();
62 genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
63 return genesis;
64}
65
77static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
78{
79 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
80 const CScript genesisOutputScript = CScript() << "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"_hex << OP_CHECKSIG;
81 return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
82}
83
87class CMainParams : public CChainParams {
88public:
89 CMainParams() {
90 m_chain_type = ChainType::MAIN;
91 consensus.signet_blocks = false;
92 consensus.signet_challenge.clear();
93 consensus.nSubsidyHalvingInterval = 210000;
94 consensus.script_flag_exceptions.emplace( // BIP16 exception
95 uint256{"00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"}, SCRIPT_VERIFY_NONE);
96 consensus.script_flag_exceptions.emplace( // Taproot exception
97 uint256{"0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"}, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
98 consensus.BIP34Height = 227931;
99 consensus.BIP34Hash = uint256{"000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"};
100 consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
101 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
102 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
103 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
104 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
105 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
106 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
107 consensus.nPowTargetSpacing = 10 * 60;
108 consensus.fPowAllowMinDifficultyBlocks = false;
109 consensus.enforce_BIP94 = false;
110 consensus.fPowNoRetargeting = false;
111 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
112 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
113 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
114 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
115 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
116 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
117
118 // Deployment of Taproot (BIPs 340-342)
119 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
120 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
121 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
122 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
123 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1815; // 90%
124 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
125
126 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000dee8e2a309ad8a9820433c68"};
127 consensus.defaultAssumeValid = uint256{"00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb"}; // 912683
128
134 pchMessageStart[0] = 0xf9;
135 pchMessageStart[1] = 0xbe;
136 pchMessageStart[2] = 0xb4;
137 pchMessageStart[3] = 0xd9;
138 nDefaultPort = 8333;
139 nPruneAfterHeight = 100000;
140 m_assumed_blockchain_size = 810;
141 m_assumed_chain_state_size = 14;
142
143 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
144 consensus.hashGenesisBlock = genesis.GetHash();
145 assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
146 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
147
148 // Note that of those which support the service bits prefix, most only support a subset of
149 // possible options.
150 // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
151 // service bits we want, but we should get them updated to support all service bits wanted by any
152 // release ASAP to avoid it where possible.
153 vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
154 vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
155 vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
156 vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
157 vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
158 vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
159 vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
160 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
161
162 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
163 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
164 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
165 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
166 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
167
168 bech32_hrp = "bc";
169
170 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
171
172 fDefaultConsistencyChecks = false;
173 m_is_mockable_chain = false;
174
175 m_assumeutxo_data = {
176 {
177 .height = 840'000,
178 .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
179 .m_chain_tx_count = 991032194,
180 .blockhash = consteval_ctor(uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"}),
181 },
182 {
183 .height = 880'000,
184 .hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
185 .m_chain_tx_count = 1145604538,
186 .blockhash = consteval_ctor(uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"}),
187 },
188 {
189 .height = 910'000,
190 .hash_serialized = AssumeutxoHash{uint256{"4daf8a17b4902498c5787966a2b51c613acdab5df5db73f196fa59a4da2f1568"}},
191 .m_chain_tx_count = 1226586151,
192 .blockhash = consteval_ctor(uint256{"0000000000000000000108970acb9522ffd516eae17acddcb1bd16469194a821"}),
193 }
194 };
195
196 chainTxData = ChainTxData{
197 // Data from RPC: getchaintxstats 4096 00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb
198 .nTime = 1756722903,
199 .tx_count = 1235299397,
200 .dTxRate = 5.456290459519495,
201 };
202
203 // Generated by headerssync-params.py on 2025-09-01.
204 m_headers_sync_params = HeadersSyncParams{
205 .commitment_period = 632,
206 .redownload_buffer_size = 15009, // 15009/632 = ~23.7 commitments
207 };
208 }
209};
210
214class CTestNetParams : public CChainParams {
215public:
216 CTestNetParams() {
217 m_chain_type = ChainType::TESTNET;
218 consensus.signet_blocks = false;
219 consensus.signet_challenge.clear();
220 consensus.nSubsidyHalvingInterval = 210000;
221 consensus.script_flag_exceptions.emplace( // BIP16 exception
222 uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
223 consensus.BIP34Height = 21111;
224 consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
225 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
226 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
227 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
228 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
229 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
230 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
231 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
232 consensus.nPowTargetSpacing = 10 * 60;
233 consensus.fPowAllowMinDifficultyBlocks = true;
234 consensus.enforce_BIP94 = false;
235 consensus.fPowNoRetargeting = false;
236 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
237 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
238 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
239 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
240 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
241 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
242
243 // Deployment of Taproot (BIPs 340-342)
244 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
245 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
246 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
247 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
248 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1512; // 75%
249 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
250
251 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000016dd270dd94fac1d7632"};
252 consensus.defaultAssumeValid = uint256{"0000000000000065c6c38258e201971a3fdfcc2ceee0dd6e85a6c022d45dee34"}; // 4550000
253
254 pchMessageStart[0] = 0x0b;
255 pchMessageStart[1] = 0x11;
256 pchMessageStart[2] = 0x09;
257 pchMessageStart[3] = 0x07;
258 nDefaultPort = 18333;
259 nPruneAfterHeight = 1000;
260 m_assumed_blockchain_size = 240;
261 m_assumed_chain_state_size = 19;
262
263 genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
264 consensus.hashGenesisBlock = genesis.GetHash();
265 assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
266 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
267
268 vFixedSeeds.clear();
269 vSeeds.clear();
270 // nodes with support for servicebits filtering should be at the top
271 vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
272 vSeeds.emplace_back("seed.tbtc.petertodd.net.");
273 vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
274 vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
275 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
276
277 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
278 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
279 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
280 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
281 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
282
283 bech32_hrp = "tb";
284
285 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
286
287 fDefaultConsistencyChecks = false;
288 m_is_mockable_chain = false;
289
290 m_assumeutxo_data = {
291 {
292 .height = 2'500'000,
293 .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
294 .m_chain_tx_count = 66484552,
295 .blockhash = consteval_ctor(uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"}),
296 }
297 };
298
299 chainTxData = ChainTxData{
300 // Data from RPC: getchaintxstats 4096 0000000000000065c6c38258e201971a3fdfcc2ceee0dd6e85a6c022d45dee34
301 .nTime = 1751816758,
302 .tx_count = 508468699,
303 .dTxRate = 7.172978845985714,
304 };
305
306 // Generated by headerssync-params.py on 2025-09-03.
307 m_headers_sync_params = HeadersSyncParams{
308 .commitment_period = 628,
309 .redownload_buffer_size = 13460, // 13460/628 = ~21.4 commitments
310 };
311 }
312};
313
317class CTestNet4Params : public CChainParams {
318public:
319 CTestNet4Params() {
320 m_chain_type = ChainType::TESTNET4;
321 consensus.signet_blocks = false;
322 consensus.signet_challenge.clear();
323 consensus.nSubsidyHalvingInterval = 210000;
324 consensus.BIP34Height = 1;
325 consensus.BIP34Hash = uint256{};
326 consensus.BIP65Height = 1;
327 consensus.BIP66Height = 1;
328 consensus.CSVHeight = 1;
329 consensus.SegwitHeight = 1;
330 consensus.MinBIP9WarningHeight = 0;
331 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
332 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
333 consensus.nPowTargetSpacing = 10 * 60;
334 consensus.fPowAllowMinDifficultyBlocks = true;
335 consensus.enforce_BIP94 = true;
336 consensus.fPowNoRetargeting = false;
337
338 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
339 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
340 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
341 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
342 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
343 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
344
345 // Deployment of Taproot (BIPs 340-342)
346 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
347 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
348 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
349 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
350 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1512; // 75%
351 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
352
353 consensus.nMinimumChainWork = uint256{"00000000000000000000000000000000000000000000034a4690fe592dc49c7c"};
354 consensus.defaultAssumeValid = uint256{"000000000000000180a58e7fa3b0db84b5ea76377524894f53660d93ac839d9b"}; // 91000
355
356 pchMessageStart[0] = 0x1c;
357 pchMessageStart[1] = 0x16;
358 pchMessageStart[2] = 0x3f;
359 pchMessageStart[3] = 0x28;
360 nDefaultPort = 48333;
361 nPruneAfterHeight = 1000;
362 m_assumed_blockchain_size = 22;
363 m_assumed_chain_state_size = 2;
364
365 const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
366 const CScript testnet4_genesis_script = CScript() << "000000000000000000000000000000000000000000000000000000000000000000"_hex << OP_CHECKSIG;
367 genesis = CreateGenesisBlock(testnet4_genesis_msg,
368 testnet4_genesis_script,
369 1714777860,
370 393743547,
371 0x1d00ffff,
372 1,
373 50 * COIN);
374 consensus.hashGenesisBlock = genesis.GetHash();
375 assert(consensus.hashGenesisBlock == uint256{"00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"});
376 assert(genesis.hashMerkleRoot == uint256{"7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"});
377
378 vFixedSeeds.clear();
379 vSeeds.clear();
380 // nodes with support for servicebits filtering should be at the top
381 vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
382 vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
383
384 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
385 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
386 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
387 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
388 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
389
390 bech32_hrp = "tb";
391
392 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
393
394 fDefaultConsistencyChecks = false;
395 m_is_mockable_chain = false;
396
397 m_assumeutxo_data = {
398 {
399 .height = 90'000,
400 .hash_serialized = AssumeutxoHash{uint256{"784fb5e98241de66fdd429f4392155c9e7db5c017148e66e8fdbc95746f8b9b5"}},
401 .m_chain_tx_count = 11347043,
402 .blockhash = consteval_ctor(uint256{"0000000002ebe8bcda020e0dd6ccfbdfac531d2f6a81457191b99fc2df2dbe3b"}),
403 }
404 };
405
406 chainTxData = ChainTxData{
407 // Data from RPC: getchaintxstats 4096 000000000000000180a58e7fa3b0db84b5ea76377524894f53660d93ac839d9b
408 .nTime = 1752470331,
409 .tx_count = 11414302,
410 .dTxRate = 0.2842619757327476,
411 };
412
413 // Generated by headerssync-params.py on 2025-09-03.
414 m_headers_sync_params = HeadersSyncParams{
415 .commitment_period = 275,
416 .redownload_buffer_size = 7017, // 7017/275 = ~25.5 commitments
417 };
418 }
419};
420
424class SigNetParams : public CChainParams {
425public:
426 explicit SigNetParams(const SigNetOptions& options)
427 {
428 std::vector<uint8_t> bin;
429 vFixedSeeds.clear();
430 vSeeds.clear();
431
432 if (!options.challenge) {
433 bin = "512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae"_hex_v_u8;
434 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_signet), std::end(chainparams_seed_signet));
435 vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
436 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
437
438 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000000000000067d328e681a"};
439 consensus.defaultAssumeValid = uint256{"000000128586e26813922680309f04e1de713c7542fee86ed908f56368aefe2e"}; // 267665
440 m_assumed_blockchain_size = 20;
441 m_assumed_chain_state_size = 4;
442 chainTxData = ChainTxData{
443 // Data from RPC: getchaintxstats 4096 000000128586e26813922680309f04e1de713c7542fee86ed908f56368aefe2e
444 .nTime = 1756723017,
445 .tx_count = 26185472,
446 .dTxRate = 0.7452721495389969,
447 };
448 } else {
449 bin = *options.challenge;
450 consensus.nMinimumChainWork = uint256{};
451 consensus.defaultAssumeValid = uint256{};
452 m_assumed_blockchain_size = 0;
453 m_assumed_chain_state_size = 0;
454 chainTxData = ChainTxData{
455 0,
456 0,
457 0,
458 };
459 LogInfo("Signet with challenge %s", HexStr(bin));
460 }
461
462 if (options.seeds) {
463 vSeeds = *options.seeds;
464 }
465
466 m_chain_type = ChainType::SIGNET;
467 consensus.signet_blocks = true;
468 consensus.signet_challenge.assign(bin.begin(), bin.end());
469 consensus.nSubsidyHalvingInterval = 210000;
470 consensus.BIP34Height = 1;
471 consensus.BIP34Hash = uint256{};
472 consensus.BIP65Height = 1;
473 consensus.BIP66Height = 1;
474 consensus.CSVHeight = 1;
475 consensus.SegwitHeight = 1;
476 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
477 consensus.nPowTargetSpacing = 10 * 60;
478 consensus.fPowAllowMinDifficultyBlocks = false;
479 consensus.enforce_BIP94 = false;
480 consensus.fPowNoRetargeting = false;
481 consensus.MinBIP9WarningHeight = 0;
482 consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
483 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
484 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
485 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
486 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
487 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
488 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
489
490 // Activation of Taproot (BIPs 340-342)
491 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
492 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
493 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
494 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
495 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1815; // 90%
496 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
497
498 // message start is defined as the first 4 bytes of the sha256d of the block script
499 HashWriter h{};
500 h << consensus.signet_challenge;
501 uint256 hash = h.GetHash();
502 std::copy_n(hash.begin(), 4, pchMessageStart.begin());
503
504 nDefaultPort = 38333;
505 nPruneAfterHeight = 1000;
506
507 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
508 consensus.hashGenesisBlock = genesis.GetHash();
509 assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
510 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
511
512 m_assumeutxo_data = {
513 {
514 .height = 160'000,
515 .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
516 .m_chain_tx_count = 2289496,
517 .blockhash = consteval_ctor(uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"}),
518 }
519 };
520
521 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
522 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
523 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
524 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
525 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
526
527 bech32_hrp = "tb";
528
529 fDefaultConsistencyChecks = false;
530 m_is_mockable_chain = false;
531
532 // Generated by headerssync-params.py on 2025-09-03.
533 m_headers_sync_params = HeadersSyncParams{
534 .commitment_period = 390,
535 .redownload_buffer_size = 9584, // 9584/390 = ~24.6 commitments
536 };
537 }
538};
539
544class CRegTestParams : public CChainParams
545{
546public:
547 explicit CRegTestParams(const RegTestOptions& opts)
548 {
549 m_chain_type = ChainType::REGTEST;
550 consensus.signet_blocks = false;
551 consensus.signet_challenge.clear();
552 consensus.nSubsidyHalvingInterval = 150;
553 consensus.BIP34Height = 1; // Always active unless overridden
554 consensus.BIP34Hash = uint256();
555 consensus.BIP65Height = 1; // Always active unless overridden
556 consensus.BIP66Height = 1; // Always active unless overridden
557 consensus.CSVHeight = 1; // Always active unless overridden
558 consensus.SegwitHeight = 0; // Always active unless overridden
559 consensus.MinBIP9WarningHeight = 0;
560 consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
561 consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
562 consensus.nPowTargetSpacing = 10 * 60;
563 consensus.fPowAllowMinDifficultyBlocks = true;
564 consensus.enforce_BIP94 = opts.enforce_bip94;
565 consensus.fPowNoRetargeting = true;
566
567 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
568 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
569 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
570 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
571 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 108; // 75%
572 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 144; // Faster than normal for regtest (144 instead of 2016)
573
574 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
575 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
576 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
577 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
578 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 108; // 75%
579 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 144;
580
581 consensus.nMinimumChainWork = uint256{};
582 consensus.defaultAssumeValid = uint256{};
583
584 pchMessageStart[0] = 0xfa;
585 pchMessageStart[1] = 0xbf;
586 pchMessageStart[2] = 0xb5;
587 pchMessageStart[3] = 0xda;
588 nDefaultPort = 18444;
589 nPruneAfterHeight = opts.fastprune ? 100 : 1000;
590 m_assumed_blockchain_size = 0;
591 m_assumed_chain_state_size = 0;
592
593 for (const auto& [dep, height] : opts.activation_heights) {
594 switch (dep) {
595 case Consensus::BuriedDeployment::DEPLOYMENT_SEGWIT:
596 consensus.SegwitHeight = int{height};
597 break;
598 case Consensus::BuriedDeployment::DEPLOYMENT_HEIGHTINCB:
599 consensus.BIP34Height = int{height};
600 break;
601 case Consensus::BuriedDeployment::DEPLOYMENT_DERSIG:
602 consensus.BIP66Height = int{height};
603 break;
604 case Consensus::BuriedDeployment::DEPLOYMENT_CLTV:
605 consensus.BIP65Height = int{height};
606 break;
607 case Consensus::BuriedDeployment::DEPLOYMENT_CSV:
608 consensus.CSVHeight = int{height};
609 break;
610 }
611 }
612
613 for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
614 consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
615 consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
616 consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
617 }
618
619 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
620 consensus.hashGenesisBlock = genesis.GetHash();
621 assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
622 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
623
624 vFixedSeeds.clear();
625 vSeeds.clear();
626 vSeeds.emplace_back("dummySeed.invalid.");
627
628 fDefaultConsistencyChecks = true;
629 m_is_mockable_chain = true;
630
631 m_assumeutxo_data = {
632 { // For use by unit tests
633 .height = 110,
634 .hash_serialized = AssumeutxoHash{uint256{"b952555c8ab81fec46f3d4253b7af256d766ceb39fb7752b9d18cdf4a0141327"}},
635 .m_chain_tx_count = 111,
636 .blockhash = consteval_ctor(uint256{"6affe030b7965ab538f820a56ef56c8149b7dc1d1c144af57113be080db7c397"}),
637 },
638 {
639 // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
640 .height = 200,
641 .hash_serialized = AssumeutxoHash{uint256{"17dcc016d188d16068907cdeb38b75691a118d43053b8cd6a25969419381d13a"}},
642 .m_chain_tx_count = 201,
643 .blockhash = consteval_ctor(uint256{"385901ccbd69dff6bbd00065d01fb8a9e464dede7cfe0372443884f9b1dcf6b9"}),
644 },
645 {
646 // For use by test/functional/feature_assumeutxo.py and test/functional/tool_bitcoin_chainstate.py
647 .height = 299,
648 .hash_serialized = AssumeutxoHash{uint256{"d2b051ff5e8eef46520350776f4100dd710a63447a8e01d917e92e79751a63e2"}},
649 .m_chain_tx_count = 334,
650 .blockhash = consteval_ctor(uint256{"7cc695046fec709f8c9394b6f928f81e81fd3ac20977bb68760fa1faa7916ea2"}),
651 },
652 };
653
654 chainTxData = ChainTxData{
655 .nTime = 0,
656 .tx_count = 0,
657 .dTxRate = 0.001, // Set a non-zero rate to make it testable
658 };
659
660 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
661 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
662 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
663 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
664 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
665
666 bech32_hrp = "bcrt";
667
668 // Copied from Testnet4.
669 m_headers_sync_params = HeadersSyncParams{
670 .commitment_period = 275,
671 .redownload_buffer_size = 7017, // 7017/275 = ~25.5 commitments
672 };
673 }
674};
675
676std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
677{
678 return std::make_unique<const SigNetParams>(options);
679}
680
681std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
682{
683 return std::make_unique<const CRegTestParams>(options);
684}
685
686std::unique_ptr<const CChainParams> CChainParams::Main()
687{
688 return std::make_unique<const CMainParams>();
689}
690
691std::unique_ptr<const CChainParams> CChainParams::TestNet()
692{
693 return std::make_unique<const CTestNetParams>();
694}
695
696std::unique_ptr<const CChainParams> CChainParams::TestNet4()
697{
698 return std::make_unique<const CTestNet4Params>();
699}
700
701std::vector<int> CChainParams::GetAvailableSnapshotHeights() const
702{
703 std::vector<int> heights;
704 heights.reserve(m_assumeutxo_data.size());
705
706 for (const auto& data : m_assumeutxo_data) {
707 heights.emplace_back(data.height);
708 }
709 return heights;
710}
711
712std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
713{
714 const auto mainnet_msg = CChainParams::Main()->MessageStart();
715 const auto testnet_msg = CChainParams::TestNet()->MessageStart();
716 const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
717 const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
718 const auto signet_msg = CChainParams::SigNet({})->MessageStart();
719
720 if (std::ranges::equal(message, mainnet_msg)) {
721 return ChainType::MAIN;
722 } else if (std::ranges::equal(message, testnet_msg)) {
723 return ChainType::TESTNET;
724 } else if (std::ranges::equal(message, testnet4_msg)) {
725 return ChainType::TESTNET4;
726 } else if (std::ranges::equal(message, regtest_msg)) {
727 return ChainType::REGTEST;
728 } else if (std::ranges::equal(message, signet_msg)) {
729 return ChainType::SIGNET;
730 }
731 return std::nullopt;
732}
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:77
CChainParams::m_assumed_chain_state_size
uint64_t m_assumed_chain_state_size
Definition: chainparams.h:171
CChainParams::pchMessageStart
MessageStartChars pchMessageStart
Definition: chainparams.h:167
CChainParams::Main
static std::unique_ptr< const CChainParams > Main()
Definition: chainparams.cpp:686
CChainParams::bech32_hrp
std::string bech32_hrp
Definition: chainparams.h:174
CChainParams::GetAvailableSnapshotHeights
std::vector< int > GetAvailableSnapshotHeights() const
Definition: chainparams.cpp:701
CChainParams::RegTest
static std::unique_ptr< const CChainParams > RegTest(const RegTestOptions &options)
Definition: chainparams.cpp:681
CChainParams::genesis
CBlock genesis
Definition: chainparams.h:176
CChainParams::m_assumed_blockchain_size
uint64_t m_assumed_blockchain_size
Definition: chainparams.h:170
CChainParams::vFixedSeeds
std::vector< uint8_t > vFixedSeeds
Definition: chainparams.h:177
CChainParams::fDefaultConsistencyChecks
bool fDefaultConsistencyChecks
Definition: chainparams.h:178
CChainParams::m_headers_sync_params
HeadersSyncParams m_headers_sync_params
Definition: chainparams.h:182
CChainParams::TestNet
static std::unique_ptr< const CChainParams > TestNet()
Definition: chainparams.cpp:691
CChainParams::base58Prefixes
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition: chainparams.h:173
CChainParams::consensus
Consensus::Params consensus
Definition: chainparams.h:166
CChainParams::m_assumeutxo_data
std::vector< AssumeutxoData > m_assumeutxo_data
Definition: chainparams.h:180
CChainParams::vSeeds
std::vector< std::string > vSeeds
Definition: chainparams.h:172
CChainParams::m_is_mockable_chain
bool m_is_mockable_chain
Definition: chainparams.h:179
CChainParams::TestNet4
static std::unique_ptr< const CChainParams > TestNet4()
Definition: chainparams.cpp:696
CChainParams::m_chain_type
ChainType m_chain_type
Definition: chainparams.h:175
CChainParams::nDefaultPort
uint16_t nDefaultPort
Definition: chainparams.h:168
CChainParams::SigNet
static std::unique_ptr< const CChainParams > SigNet(const SigNetOptions &options)
Definition: chainparams.cpp:676
CChainParams::nPruneAfterHeight
uint64_t nPruneAfterHeight
Definition: chainparams.h:169
CChainParams::chainTxData
ChainTxData chainTxData
Definition: chainparams.h:181
CMainParams
Main network on which people trade goods and services.
Definition: chainparams.cpp:87
CRegTestParams
Regression test: intended for private networks only.
Definition: chainparams.cpp:545
CRegTestParams::CRegTestParams
CRegTestParams(const RegTestOptions &opts)
Definition: chainparams.cpp:547
CScript
Serialized script, used inside transaction inputs and outputs.
Definition: script.h:405
CTestNet4Params
Testnet (v4): public test network which is reset from time to time.
Definition: chainparams.cpp:317
CTestNetParams
Testnet (v3): public test network which is reset from time to time.
Definition: chainparams.cpp:214
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:424
SigNetParams::SigNetParams
SigNetParams(const SigNetOptions &options)
Definition: chainparams.cpp:426
base_blob::begin
constexpr unsigned char * begin()
Definition: uint256.h:100
base_blob::SetNull
constexpr void SetNull()
Definition: uint256.h:55
uint256
256-bit opaque blob.
Definition: uint256.h:195
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:30
hex_base.h
SCRIPT_VERIFY_NONE
static constexpr script_verify_flags SCRIPT_VERIFY_NONE
Script verification flags.
Definition: interpreter.h:47
consteval_ctor
#define consteval_ctor(input)
Definition: chainparams.cpp:42
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:45
GetNetworkForMagic
std::optional< ChainType > GetNetworkForMagic(const MessageStartChars &message)
Definition: chainparams.cpp:712
LogInfo
#define LogInfo(...)
Definition: logging.h:392
MessageStartChars
std::array< uint8_t, 4 > MessageStartChars
Definition: messagestartchars.h:11
Consensus::DEPLOYMENT_TAPROOT
@ DEPLOYMENT_TAPROOT
Definition: params.h:36
Consensus::DEPLOYMENT_TESTDUMMY
@ DEPLOYMENT_TESTDUMMY
Definition: params.h:35
Consensus::DEPLOYMENT_DERSIG
@ DEPLOYMENT_DERSIG
Definition: params.h:28
Consensus::DEPLOYMENT_CSV
@ DEPLOYMENT_CSV
Definition: params.h:29
Consensus::DEPLOYMENT_SEGWIT
@ DEPLOYMENT_SEGWIT
Definition: params.h:30
Consensus::DEPLOYMENT_HEIGHTINCB
@ DEPLOYMENT_HEIGHTINCB
Definition: params.h:26
Consensus::DEPLOYMENT_CLTV
@ DEPLOYMENT_CLTV
Definition: params.h:27
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:404
OP_CHECKSIG
@ OP_CHECKSIG
Definition: script.h:190
CChainParams::RegTestOptions
RegTestOptions holds configurations for creating a regtest CChainParams.
Definition: chainparams.h:150
CChainParams::RegTestOptions::version_bits_parameters
std::unordered_map< Consensus::DeploymentPos, VersionBitsParameters > version_bits_parameters
Definition: chainparams.h:151
CChainParams::RegTestOptions::activation_heights
std::unordered_map< Consensus::BuriedDeployment, int > activation_heights
Definition: chainparams.h:152
CChainParams::SigNetOptions
SigNetOptions holds configurations for creating a signet CChainParams.
Definition: chainparams.h:133
CChainParams::SigNetOptions::challenge
std::optional< std::vector< uint8_t > > challenge
Definition: chainparams.h:134
CChainParams::SigNetOptions::seeds
std::optional< std::vector< std::string > > seeds
Definition: chainparams.h:135
CMutableTransaction
A mutable version of CTransaction.
Definition: transaction.h:358
CMutableTransaction::vout
std::vector< CTxOut > vout
Definition: transaction.h:360
CMutableTransaction::vin
std::vector< CTxIn > vin
Definition: transaction.h:359
ChainTxData
Holds various statistics on transactions within a chain.
Definition: chainparams.h:57
ChainTxData::nTime
int64_t nTime
UNIX timestamp of last known number of transactions.
Definition: chainparams.h:58
Consensus::BIP9Deployment::ALWAYS_ACTIVE
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition: params.h:73
Consensus::BIP9Deployment::NEVER_ACTIVE
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition: params.h:78
Consensus::BIP9Deployment::NO_TIMEOUT
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition: params.h:67
Consensus::Params::enforce_BIP94
bool enforce_BIP94
Enforce BIP94 timewarp attack mitigation.
Definition: params.h:118
Consensus::Params::BIP65Height
int BIP65Height
Block height at which BIP65 becomes active.
Definition: params.h:98
Consensus::Params::CSVHeight
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition: params.h:102
Consensus::Params::BIP34Hash
uint256 BIP34Hash
Definition: params.h:96
Consensus::Params::defaultAssumeValid
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition: params.h:130
Consensus::Params::signet_challenge
std::vector< uint8_t > signet_challenge
Definition: params.h:137
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:136
Consensus::Params::SegwitHeight
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition: params.h:106
Consensus::Params::BIP34Height
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition: params.h:95
Consensus::Params::nSubsidyHalvingInterval
int nSubsidyHalvingInterval
Definition: params.h:86
Consensus::Params::script_flag_exceptions
std::map< uint256, script_verify_flags > script_flag_exceptions
Hashes of blocks that.
Definition: params.h:93
Consensus::Params::hashGenesisBlock
uint256 hashGenesisBlock
Definition: params.h:85
Consensus::Params::MinBIP9WarningHeight
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition: params.h:109
Consensus::Params::fPowNoRetargeting
bool fPowNoRetargeting
Definition: params.h:119
Consensus::Params::nMinimumChainWork
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition: params.h:128
Consensus::Params::nPowTargetTimespan
int64_t nPowTargetTimespan
Definition: params.h:121
Consensus::Params::BIP66Height
int BIP66Height
Block height at which BIP66 becomes active.
Definition: params.h:100
Consensus::Params::powLimit
uint256 powLimit
Proof of work parameters.
Definition: params.h:112
Consensus::Params::vDeployments
std::array< BIP9Deployment, MAX_VERSION_BITS_DEPLOYMENTS > vDeployments
Definition: params.h:110
Consensus::Params::nPowTargetSpacing
int64_t nPowTargetSpacing
Definition: params.h:120
Consensus::Params::fPowAllowMinDifficultyBlocks
bool fPowAllowMinDifficultyBlocks
Definition: params.h:113
HeadersSyncParams
Configuration for headers sync memory usage.
Definition: chainparams.h:64
HeadersSyncParams::commitment_period
size_t commitment_period
Distance in blocks between header commitments.
Definition: chainparams.h:66
assert
assert(!tx.IsCoinBase())
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