Bitcoin Core 28.0.0
P2P Digital Currency
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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
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
29// Workaround MSVC bug triggering C7595 when calling consteval constructors in
30// initializer lists.
31// A fix may be on the way:
32// https://developercommunity.visualstudio.com/t/consteval-conversion-function-fails/1579014
33#if defined(_MSC_VER)
34auto consteval_ctor(auto&& input) { return input; }
35#else
36#define consteval_ctor(input) (input)
37#endif
38
39static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
40{
41 CMutableTransaction txNew;
42 txNew.version = 1;
43 txNew.vin.resize(1);
44 txNew.vout.resize(1);
45 txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
46 txNew.vout[0].nValue = genesisReward;
47 txNew.vout[0].scriptPubKey = genesisOutputScript;
48
49 CBlock genesis;
50 genesis.nTime = nTime;
51 genesis.nBits = nBits;
52 genesis.nNonce = nNonce;
53 genesis.nVersion = nVersion;
54 genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
55 genesis.hashPrevBlock.SetNull();
56 genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
57 return genesis;
58}
59
71static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
72{
73 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
74 const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
75 return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
76}
77
81class CMainParams : public CChainParams {
82public:
83 CMainParams() {
84 m_chain_type = ChainType::MAIN;
85 consensus.signet_blocks = false;
86 consensus.signet_challenge.clear();
87 consensus.nSubsidyHalvingInterval = 210000;
88 consensus.script_flag_exceptions.emplace( // BIP16 exception
89 uint256{"00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"}, SCRIPT_VERIFY_NONE);
90 consensus.script_flag_exceptions.emplace( // Taproot exception
91 uint256{"0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"}, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
92 consensus.BIP34Height = 227931;
93 consensus.BIP34Hash = uint256{"000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"};
94 consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
95 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
96 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
97 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
98 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
99 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
100 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
101 consensus.nPowTargetSpacing = 10 * 60;
102 consensus.fPowAllowMinDifficultyBlocks = false;
103 consensus.enforce_BIP94 = false;
104 consensus.fPowNoRetargeting = false;
105 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
106 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
107 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
108 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
109 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
110 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
111
112 // Deployment of Taproot (BIPs 340-342)
113 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
114 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
115 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
116 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
117
118 consensus.nMinimumChainWork = uint256{"000000000000000000000000000000000000000088e186b70e0862c193ec44d6"};
119 consensus.defaultAssumeValid = uint256{"000000000000000000011c5890365bdbe5d25b97ce0057589acaef4f1a57263f"}; // 856760
120
126 pchMessageStart[0] = 0xf9;
127 pchMessageStart[1] = 0xbe;
128 pchMessageStart[2] = 0xb4;
129 pchMessageStart[3] = 0xd9;
130 nDefaultPort = 8333;
131 nPruneAfterHeight = 100000;
132 m_assumed_blockchain_size = 620;
133 m_assumed_chain_state_size = 14;
134
135 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
136 consensus.hashGenesisBlock = genesis.GetHash();
137 assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
138 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
139
140 // Note that of those which support the service bits prefix, most only support a subset of
141 // possible options.
142 // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
143 // service bits we want, but we should get them updated to support all service bits wanted by any
144 // release ASAP to avoid it where possible.
145 vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
146 vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
147 vSeeds.emplace_back("dnsseed.bitcoin.dashjr-list-of-p2p-nodes.us."); // Luke Dashjr
148 vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
149 vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
150 vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
151 vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
152 vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
153 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
154
155 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
156 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
157 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
158 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
159 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
160
161 bech32_hrp = "bc";
162
163 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
164
165 fDefaultConsistencyChecks = false;
166 m_is_mockable_chain = false;
167
168 checkpointData = {
169 {
170 { 11111, uint256{"0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d"}},
171 { 33333, uint256{"000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6"}},
172 { 74000, uint256{"0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20"}},
173 {105000, uint256{"00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97"}},
174 {134444, uint256{"00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe"}},
175 {168000, uint256{"000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763"}},
176 {193000, uint256{"000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317"}},
177 {210000, uint256{"000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e"}},
178 {216116, uint256{"00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e"}},
179 {225430, uint256{"00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932"}},
180 {250000, uint256{"000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214"}},
181 {279000, uint256{"0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40"}},
182 {295000, uint256{"00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983"}},
183 }
184 };
185
186 m_assumeutxo_data = {
187 {
188 .height = 840'000,
189 .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
190 .m_chain_tx_count = 991032194,
191 .blockhash = consteval_ctor(uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"}),
192 }
193 };
194
195 chainTxData = ChainTxData{
196 // Data from RPC: getchaintxstats 4096 000000000000000000011c5890365bdbe5d25b97ce0057589acaef4f1a57263f
197 .nTime = 1723649144,
198 .tx_count = 1059312821,
199 .dTxRate = 6.721086701157182,
200 };
201 }
202};
203
207class CTestNetParams : public CChainParams {
208public:
209 CTestNetParams() {
210 m_chain_type = ChainType::TESTNET;
211 consensus.signet_blocks = false;
212 consensus.signet_challenge.clear();
213 consensus.nSubsidyHalvingInterval = 210000;
214 consensus.script_flag_exceptions.emplace( // BIP16 exception
215 uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
216 consensus.BIP34Height = 21111;
217 consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
218 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
219 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
220 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
221 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
222 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
223 consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
224 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
225 consensus.nPowTargetSpacing = 10 * 60;
226 consensus.fPowAllowMinDifficultyBlocks = true;
227 consensus.enforce_BIP94 = false;
228 consensus.fPowNoRetargeting = false;
229 consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
230 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
231 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
232 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
233 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
234 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
235
236 // Deployment of Taproot (BIPs 340-342)
237 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
238 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
239 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
240 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
241
242 consensus.nMinimumChainWork = uint256{"000000000000000000000000000000000000000000000f209695166be8b61fa9"};
243 consensus.defaultAssumeValid = uint256{"000000000000000465b1a66c9f386308e8c75acef9201f3f577811da09fc90ad"}; // 2873500
244
245 pchMessageStart[0] = 0x0b;
246 pchMessageStart[1] = 0x11;
247 pchMessageStart[2] = 0x09;
248 pchMessageStart[3] = 0x07;
249 nDefaultPort = 18333;
250 nPruneAfterHeight = 1000;
251 m_assumed_blockchain_size = 93;
252 m_assumed_chain_state_size = 19;
253
254 genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
255 consensus.hashGenesisBlock = genesis.GetHash();
256 assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
257 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
258
259 vFixedSeeds.clear();
260 vSeeds.clear();
261 // nodes with support for servicebits filtering should be at the top
262 vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
263 vSeeds.emplace_back("seed.tbtc.petertodd.net.");
264 vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
265 vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
266 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
267
268 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
269 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
270 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
271 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
272 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
273
274 bech32_hrp = "tb";
275
276 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
277
278 fDefaultConsistencyChecks = false;
279 m_is_mockable_chain = false;
280
281 checkpointData = {
282 {
283 {546, uint256{"000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70"}},
284 }
285 };
286
287 m_assumeutxo_data = {
288 {
289 .height = 2'500'000,
290 .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
291 .m_chain_tx_count = 66484552,
292 .blockhash = consteval_ctor(uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"}),
293 }
294 };
295
296 chainTxData = ChainTxData{
297 // Data from RPC: getchaintxstats 4096 000000000000000465b1a66c9f386308e8c75acef9201f3f577811da09fc90ad
298 .nTime = 1723613341,
299 .tx_count = 187917082,
300 .dTxRate = 3.265051477698455,
301 };
302 }
303};
304
308class CTestNet4Params : public CChainParams {
309public:
310 CTestNet4Params() {
311 m_chain_type = ChainType::TESTNET4;
312 consensus.signet_blocks = false;
313 consensus.signet_challenge.clear();
314 consensus.nSubsidyHalvingInterval = 210000;
315 consensus.BIP34Height = 1;
316 consensus.BIP34Hash = uint256{};
317 consensus.BIP65Height = 1;
318 consensus.BIP66Height = 1;
319 consensus.CSVHeight = 1;
320 consensus.SegwitHeight = 1;
321 consensus.MinBIP9WarningHeight = 0;
322 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
323 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
324 consensus.nPowTargetSpacing = 10 * 60;
325 consensus.fPowAllowMinDifficultyBlocks = true;
326 consensus.enforce_BIP94 = true;
327 consensus.fPowNoRetargeting = false;
328 consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
329 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
330 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
331 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
332 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
333 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
334
335 // Deployment of Taproot (BIPs 340-342)
336 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
337 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
338 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
339 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
340
341 consensus.nMinimumChainWork = uint256{"00000000000000000000000000000000000000000000005faa15d02e6202f3ba"};
342 consensus.defaultAssumeValid = uint256{"000000005be348057db991fa5d89fe7c4695b667cfb311391a8db374b6f681fd"}; // 39550
343
344 pchMessageStart[0] = 0x1c;
345 pchMessageStart[1] = 0x16;
346 pchMessageStart[2] = 0x3f;
347 pchMessageStart[3] = 0x28;
348 nDefaultPort = 48333;
349 nPruneAfterHeight = 1000;
350 m_assumed_blockchain_size = 1;
351 m_assumed_chain_state_size = 0;
352
353 const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
354 const CScript testnet4_genesis_script = CScript() << ParseHex("000000000000000000000000000000000000000000000000000000000000000000") << OP_CHECKSIG;
355 genesis = CreateGenesisBlock(testnet4_genesis_msg,
356 testnet4_genesis_script,
357 1714777860,
358 393743547,
359 0x1d00ffff,
360 1,
361 50 * COIN);
362 consensus.hashGenesisBlock = genesis.GetHash();
363 assert(consensus.hashGenesisBlock == uint256S("0x00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"));
364 assert(genesis.hashMerkleRoot == uint256S("0x7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"));
365
366 vFixedSeeds.clear();
367 vSeeds.clear();
368 // nodes with support for servicebits filtering should be at the top
369 vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
370 vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
371
372 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
373 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
374 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
375 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
376 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
377
378 bech32_hrp = "tb";
379
380 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
381
382 fDefaultConsistencyChecks = false;
383 m_is_mockable_chain = false;
384
385 checkpointData = {
386 {
387 {},
388 }
389 };
390
391 m_assumeutxo_data = {
392 {}
393 };
394
395 chainTxData = ChainTxData{
396 // Data from RPC: getchaintxstats 4096 000000005be348057db991fa5d89fe7c4695b667cfb311391a8db374b6f681fd
397 .nTime = 1723651702,
398 .tx_count = 757229,
399 .dTxRate = 0.01570402633472492,
400 };
401 }
402};
403
407class SigNetParams : public CChainParams {
408public:
409 explicit SigNetParams(const SigNetOptions& options)
410 {
411 std::vector<uint8_t> bin;
412 vSeeds.clear();
413
414 if (!options.challenge) {
415 bin = ParseHex("512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae");
416 vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
417 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
418
419 // Hardcoded nodes can be removed once there are more DNS seeds
420 vSeeds.emplace_back("178.128.221.177");
421 vSeeds.emplace_back("v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333");
422
423 consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000000000000025dbd66e58f"};
424 consensus.defaultAssumeValid = uint256{"0000014aad1d58dddcb964dd749b073374c6306e716b22f573a2efe68d414539"}; // 208800
425 m_assumed_blockchain_size = 2;
426 m_assumed_chain_state_size = 0;
427 chainTxData = ChainTxData{
428 // Data from RPC: getchaintxstats 4096 0000014aad1d58dddcb964dd749b073374c6306e716b22f573a2efe68d414539
429 .nTime = 1723655233,
430 .tx_count = 5507045,
431 .dTxRate = 0.06271073277261494,
432 };
433 } else {
434 bin = *options.challenge;
435 consensus.nMinimumChainWork = uint256{};
436 consensus.defaultAssumeValid = uint256{};
437 m_assumed_blockchain_size = 0;
438 m_assumed_chain_state_size = 0;
439 chainTxData = ChainTxData{
440 0,
441 0,
442 0,
443 };
444 LogPrintf("Signet with challenge %s\n", HexStr(bin));
445 }
446
447 if (options.seeds) {
448 vSeeds = *options.seeds;
449 }
450
451 m_chain_type = ChainType::SIGNET;
452 consensus.signet_blocks = true;
453 consensus.signet_challenge.assign(bin.begin(), bin.end());
454 consensus.nSubsidyHalvingInterval = 210000;
455 consensus.BIP34Height = 1;
456 consensus.BIP34Hash = uint256{};
457 consensus.BIP65Height = 1;
458 consensus.BIP66Height = 1;
459 consensus.CSVHeight = 1;
460 consensus.SegwitHeight = 1;
461 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
462 consensus.nPowTargetSpacing = 10 * 60;
463 consensus.fPowAllowMinDifficultyBlocks = false;
464 consensus.enforce_BIP94 = false;
465 consensus.fPowNoRetargeting = false;
466 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
467 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
468 consensus.MinBIP9WarningHeight = 0;
469 consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
470 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
471 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
472 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
473 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
474
475 // Activation of Taproot (BIPs 340-342)
476 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
477 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
478 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
479 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
480
481 // message start is defined as the first 4 bytes of the sha256d of the block script
482 HashWriter h{};
483 h << consensus.signet_challenge;
484 uint256 hash = h.GetHash();
485 std::copy_n(hash.begin(), 4, pchMessageStart.begin());
486
487 nDefaultPort = 38333;
488 nPruneAfterHeight = 1000;
489
490 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
491 consensus.hashGenesisBlock = genesis.GetHash();
492 assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
493 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
494
495 vFixedSeeds.clear();
496
497 m_assumeutxo_data = {
498 {
499 .height = 160'000,
500 .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
501 .m_chain_tx_count = 2289496,
502 .blockhash = consteval_ctor(uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"}),
503 }
504 };
505
506 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
507 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
508 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
509 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
510 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
511
512 bech32_hrp = "tb";
513
514 fDefaultConsistencyChecks = false;
515 m_is_mockable_chain = false;
516 }
517};
518
523class CRegTestParams : public CChainParams
524{
525public:
526 explicit CRegTestParams(const RegTestOptions& opts)
527 {
528 m_chain_type = ChainType::REGTEST;
529 consensus.signet_blocks = false;
530 consensus.signet_challenge.clear();
531 consensus.nSubsidyHalvingInterval = 150;
532 consensus.BIP34Height = 1; // Always active unless overridden
533 consensus.BIP34Hash = uint256();
534 consensus.BIP65Height = 1; // Always active unless overridden
535 consensus.BIP66Height = 1; // Always active unless overridden
536 consensus.CSVHeight = 1; // Always active unless overridden
537 consensus.SegwitHeight = 0; // Always active unless overridden
538 consensus.MinBIP9WarningHeight = 0;
539 consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
540 consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
541 consensus.nPowTargetSpacing = 10 * 60;
542 consensus.fPowAllowMinDifficultyBlocks = true;
543 consensus.enforce_BIP94 = true;
544 consensus.fPowNoRetargeting = true;
545 consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
546 consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
547
548 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
549 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
550 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
551 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
552
553 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
554 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
555 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
556 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
557
558 consensus.nMinimumChainWork = uint256{};
559 consensus.defaultAssumeValid = uint256{};
560
561 pchMessageStart[0] = 0xfa;
562 pchMessageStart[1] = 0xbf;
563 pchMessageStart[2] = 0xb5;
564 pchMessageStart[3] = 0xda;
565 nDefaultPort = 18444;
566 nPruneAfterHeight = opts.fastprune ? 100 : 1000;
567 m_assumed_blockchain_size = 0;
568 m_assumed_chain_state_size = 0;
569
570 for (const auto& [dep, height] : opts.activation_heights) {
571 switch (dep) {
572 case Consensus::BuriedDeployment::DEPLOYMENT_SEGWIT:
573 consensus.SegwitHeight = int{height};
574 break;
575 case Consensus::BuriedDeployment::DEPLOYMENT_HEIGHTINCB:
576 consensus.BIP34Height = int{height};
577 break;
578 case Consensus::BuriedDeployment::DEPLOYMENT_DERSIG:
579 consensus.BIP66Height = int{height};
580 break;
581 case Consensus::BuriedDeployment::DEPLOYMENT_CLTV:
582 consensus.BIP65Height = int{height};
583 break;
584 case Consensus::BuriedDeployment::DEPLOYMENT_CSV:
585 consensus.CSVHeight = int{height};
586 break;
587 }
588 }
589
590 for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
591 consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
592 consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
593 consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
594 }
595
596 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
597 consensus.hashGenesisBlock = genesis.GetHash();
598 assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
599 assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
600
601 vFixedSeeds.clear();
602 vSeeds.clear();
603 vSeeds.emplace_back("dummySeed.invalid.");
604
605 fDefaultConsistencyChecks = true;
606 m_is_mockable_chain = true;
607
608 checkpointData = {
609 {
610 {0, uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"}},
611 }
612 };
613
614 m_assumeutxo_data = {
615 { // For use by unit tests
616 .height = 110,
617 .hash_serialized = AssumeutxoHash{uint256{"6657b736d4fe4db0cbc796789e812d5dba7f5c143764b1b6905612f1830609d1"}},
618 .m_chain_tx_count = 111,
619 .blockhash = consteval_ctor(uint256{"696e92821f65549c7ee134edceeeeaaa4105647a3c4fd9f298c0aec0ab50425c"}),
620 },
621 {
622 // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
623 .height = 200,
624 .hash_serialized = AssumeutxoHash{uint256{"4f34d431c3e482f6b0d67b64609ece3964dc8d7976d02ac68dd7c9c1421738f2"}},
625 .m_chain_tx_count = 201,
626 .blockhash = consteval_ctor(uint256{"5e93653318f294fb5aa339d00bbf8cf1c3515488ad99412c37608b139ea63b27"}),
627 },
628 {
629 // For use by test/functional/feature_assumeutxo.py
630 .height = 299,
631 .hash_serialized = AssumeutxoHash{uint256{"a4bf3407ccb2cc0145c49ebba8fa91199f8a3903daf0883875941497d2493c27"}},
632 .m_chain_tx_count = 334,
633 .blockhash = consteval_ctor(uint256{"3bb7ce5eba0be48939b7a521ac1ba9316afee2c7bada3a0cca24188e6d7d96c0"}),
634 },
635 };
636
637 chainTxData = ChainTxData{
638 0,
639 0,
640 0
641 };
642
643 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
644 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
645 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
646 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
647 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
648
649 bech32_hrp = "bcrt";
650 }
651};
652
653std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
654{
655 return std::make_unique<const SigNetParams>(options);
656}
657
658std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
659{
660 return std::make_unique<const CRegTestParams>(options);
661}
662
663std::unique_ptr<const CChainParams> CChainParams::Main()
664{
665 return std::make_unique<const CMainParams>();
666}
667
668std::unique_ptr<const CChainParams> CChainParams::TestNet()
669{
670 return std::make_unique<const CTestNetParams>();
671}
672
673std::unique_ptr<const CChainParams> CChainParams::TestNet4()
674{
675 return std::make_unique<const CTestNet4Params>();
676}
677
678std::vector<int> CChainParams::GetAvailableSnapshotHeights() const
679{
680 std::vector<int> heights;
681 heights.reserve(m_assumeutxo_data.size());
682
683 for (const auto& data : m_assumeutxo_data) {
684 heights.emplace_back(data.height);
685 }
686 return heights;
687}
688
689std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
690{
691 const auto mainnet_msg = CChainParams::Main()->MessageStart();
692 const auto testnet_msg = CChainParams::TestNet()->MessageStart();
693 const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
694 const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
695 const auto signet_msg = CChainParams::SigNet({})->MessageStart();
696
697 if (std::equal(message.begin(), message.end(), mainnet_msg.data())) {
698 return ChainType::MAIN;
699 } else if (std::equal(message.begin(), message.end(), testnet_msg.data())) {
700 return ChainType::TESTNET;
701 } else if (std::equal(message.begin(), message.end(), testnet4_msg.data())) {
702 return ChainType::TESTNET4;
703 } else if (std::equal(message.begin(), message.end(), regtest_msg.data())) {
704 return ChainType::REGTEST;
705 } else if (std::equal(message.begin(), message.end(), signet_msg.data())) {
706 return ChainType::SIGNET;
707 }
708 return std::nullopt;
709}
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:2068
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:2382
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:81
CChainParams::m_assumed_chain_state_size
uint64_t m_assumed_chain_state_size
Definition chainparams.h:174
CChainParams::pchMessageStart
MessageStartChars pchMessageStart
Definition chainparams.h:170
CChainParams::Main
static std::unique_ptr< const CChainParams > Main()
Definition chainparams.cpp:663
CChainParams::bech32_hrp
std::string bech32_hrp
Definition chainparams.h:177
CChainParams::GetAvailableSnapshotHeights
std::vector< int > GetAvailableSnapshotHeights() const
Definition chainparams.cpp:678
CChainParams::RegTest
static std::unique_ptr< const CChainParams > RegTest(const RegTestOptions &options)
Definition chainparams.cpp:658
CChainParams::m_assumed_blockchain_size
uint64_t m_assumed_blockchain_size
Definition chainparams.h:173
CChainParams::vFixedSeeds
std::vector< uint8_t > vFixedSeeds
Definition chainparams.h:180
CChainParams::fDefaultConsistencyChecks
bool fDefaultConsistencyChecks
Definition chainparams.h:181
CChainParams::TestNet
static std::unique_ptr< const CChainParams > TestNet()
Definition chainparams.cpp:668
CChainParams::base58Prefixes
std::vector< unsigned char > base58Prefixes[MAX_BASE58_TYPES]
Definition chainparams.h:176
CChainParams::consensus
Consensus::Params consensus
Definition chainparams.h:169
CChainParams::m_assumeutxo_data
std::vector< AssumeutxoData > m_assumeutxo_data
Definition chainparams.h:184
CChainParams::vSeeds
std::vector< std::string > vSeeds
Definition chainparams.h:175
CChainParams::m_is_mockable_chain
bool m_is_mockable_chain
Definition chainparams.h:182
CChainParams::TestNet4
static std::unique_ptr< const CChainParams > TestNet4()
Definition chainparams.cpp:673
CChainParams::m_chain_type
ChainType m_chain_type
Definition chainparams.h:178
CChainParams::checkpointData
CCheckpointData checkpointData
Definition chainparams.h:183
CChainParams::nDefaultPort
uint16_t nDefaultPort
Definition chainparams.h:171
CChainParams::SigNet
static std::unique_ptr< const CChainParams > SigNet(const SigNetOptions &options)
Definition chainparams.cpp:653
CChainParams::nPruneAfterHeight
uint64_t nPruneAfterHeight
Definition chainparams.h:172
CChainParams::chainTxData
ChainTxData chainTxData
Definition chainparams.h:185
CMainParams
Main network on which people trade goods and services.
Definition chainparams.cpp:81
CRegTestParams
Regression test: intended for private networks only.
Definition chainparams.cpp:524
CRegTestParams::CRegTestParams
CRegTestParams(const RegTestOptions &opts)
Definition chainparams.cpp:526
CScript
Serialized script, used inside transaction inputs and outputs.
Definition script.h:414
CTestNet4Params
Testnet (v4): public test network which is reset from time to time.
Definition chainparams.cpp:308
CTestNetParams
Testnet (v3): public test network which is reset from time to time.
Definition chainparams.cpp:207
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:407
SigNetParams::SigNetParams
SigNetParams(const SigNetOptions &options)
Definition chainparams.cpp:409
base_blob::begin
constexpr unsigned char * begin()
Definition uint256.h:102
base_blob::SetNull
constexpr void SetNull()
Definition uint256.h:53
uint256
256-bit opaque blob.
Definition uint256.h:178
HexStr
std::string HexStr(const 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:36
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:39
GetNetworkForMagic
std::optional< ChainType > GetNetworkForMagic(const MessageStartChars &message)
Definition chainparams.cpp:689
LogPrintf
#define LogPrintf(...)
Definition logging.h:274
BlockMerkleRoot
uint256 BlockMerkleRoot(const CBlock &block, bool *mutated)
Definition merkle.cpp:65
MessageStartChars
std::array< uint8_t, 4 > MessageStartChars
Definition messagestartchars.h:11
Consensus::DEPLOYMENT_TAPROOT
@ DEPLOYMENT_TAPROOT
Definition params.h:34
Consensus::DEPLOYMENT_TESTDUMMY
@ DEPLOYMENT_TESTDUMMY
Definition params.h:33
Consensus::DEPLOYMENT_DERSIG
@ DEPLOYMENT_DERSIG
Definition params.h:26
Consensus::DEPLOYMENT_CSV
@ DEPLOYMENT_CSV
Definition params.h:27
Consensus::DEPLOYMENT_SEGWIT
@ DEPLOYMENT_SEGWIT
Definition params.h:28
Consensus::DEPLOYMENT_HEIGHTINCB
@ DEPLOYMENT_HEIGHTINCB
Definition params.h:24
Consensus::DEPLOYMENT_CLTV
@ DEPLOYMENT_CLTV
Definition params.h:25
MakeTransactionRef
static CTransactionRef MakeTransactionRef(Tx &&txIn)
Definition transaction.h:424
OP_CHECKSIG
@ OP_CHECKSIG
Definition script.h:189
ParseHex
std::vector< Byte > ParseHex(std::string_view hex_str)
Like TryParseHex, but returns an empty vector on invalid input.
Definition strencodings.h:66
CChainParams::RegTestOptions
RegTestOptions holds configurations for creating a regtest CChainParams.
Definition chainparams.h:154
CChainParams::RegTestOptions::version_bits_parameters
std::unordered_map< Consensus::DeploymentPos, VersionBitsParameters > version_bits_parameters
Definition chainparams.h:155
CChainParams::RegTestOptions::activation_heights
std::unordered_map< Consensus::BuriedDeployment, int > activation_heights
Definition chainparams.h:156
CChainParams::SigNetOptions
SigNetOptions holds configurations for creating a signet CChainParams.
Definition chainparams.h:137
CChainParams::SigNetOptions::challenge
std::optional< std::vector< uint8_t > > challenge
Definition chainparams.h:138
CChainParams::SigNetOptions::seeds
std::optional< std::vector< std::string > > seeds
Definition chainparams.h:139
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:70
Consensus::BIP9Deployment::min_activation_height
int min_activation_height
If lock in occurs, delay activation until at least this block height.
Definition params.h:54
Consensus::BIP9Deployment::bit
int bit
Bit position to select the particular bit in nVersion.
Definition params.h:45
Consensus::BIP9Deployment::ALWAYS_ACTIVE
static constexpr int64_t ALWAYS_ACTIVE
Special value for nStartTime indicating that the deployment is always active.
Definition params.h:63
Consensus::BIP9Deployment::NEVER_ACTIVE
static constexpr int64_t NEVER_ACTIVE
Special value for nStartTime indicating that the deployment is never active.
Definition params.h:68
Consensus::BIP9Deployment::nTimeout
int64_t nTimeout
Timeout/expiry MedianTime for the deployment attempt.
Definition params.h:49
Consensus::BIP9Deployment::NO_TIMEOUT
static constexpr int64_t NO_TIMEOUT
Constant for nTimeout very far in the future.
Definition params.h:57
Consensus::BIP9Deployment::nStartTime
int64_t nStartTime
Start MedianTime for version bits miner confirmation.
Definition params.h:47
Consensus::Params::enforce_BIP94
bool enforce_BIP94
Enfore BIP94 timewarp attack mitigation.
Definition params.h:115
Consensus::Params::BIP65Height
int BIP65Height
Block height at which BIP65 becomes active.
Definition params.h:88
Consensus::Params::CSVHeight
int CSVHeight
Block height at which CSV (BIP68, BIP112 and BIP113) becomes active.
Definition params.h:92
Consensus::Params::BIP34Hash
uint256 BIP34Hash
Definition params.h:86
Consensus::Params::nMinerConfirmationWindow
uint32_t nMinerConfirmationWindow
Definition params.h:106
Consensus::Params::defaultAssumeValid
uint256 defaultAssumeValid
By default assume that the signatures in ancestors of this block are valid.
Definition params.h:127
Consensus::Params::script_flag_exceptions
std::map< uint256, uint32_t > script_flag_exceptions
Hashes of blocks that.
Definition params.h:83
Consensus::Params::signet_challenge
std::vector< uint8_t > signet_challenge
Definition params.h:134
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:133
Consensus::Params::SegwitHeight
int SegwitHeight
Block height at which Segwit (BIP141, BIP143 and BIP147) becomes active.
Definition params.h:96
Consensus::Params::BIP34Height
int BIP34Height
Block height and hash at which BIP34 becomes active.
Definition params.h:85
Consensus::Params::nSubsidyHalvingInterval
int nSubsidyHalvingInterval
Definition params.h:76
Consensus::Params::vDeployments
BIP9Deployment vDeployments[MAX_VERSION_BITS_DEPLOYMENTS]
Definition params.h:107
Consensus::Params::hashGenesisBlock
uint256 hashGenesisBlock
Definition params.h:75
Consensus::Params::MinBIP9WarningHeight
int MinBIP9WarningHeight
Don't warn about unknown BIP 9 activations below this height.
Definition params.h:99
Consensus::Params::fPowNoRetargeting
bool fPowNoRetargeting
Definition params.h:116
Consensus::Params::nMinimumChainWork
uint256 nMinimumChainWork
The best chain should have at least this much work.
Definition params.h:125
Consensus::Params::nRuleChangeActivationThreshold
uint32_t nRuleChangeActivationThreshold
Minimum blocks including miner confirmation of the total of 2016 blocks in a retargeting period,...
Definition params.h:105
Consensus::Params::nPowTargetTimespan
int64_t nPowTargetTimespan
Definition params.h:118
Consensus::Params::BIP66Height
int BIP66Height
Block height at which BIP66 becomes active.
Definition params.h:90
Consensus::Params::powLimit
uint256 powLimit
Proof of work parameters.
Definition params.h:109
Consensus::Params::nPowTargetSpacing
int64_t nPowTargetSpacing
Definition params.h:117
Consensus::Params::fPowAllowMinDifficultyBlocks
bool fPowAllowMinDifficultyBlocks
Definition params.h:110
uint256S
uint256 uint256S(std::string_view str)
Definition uint256.h:192
assert
assert(!tx.IsCoinBase())
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