Branch data Line data Source code
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 <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/log.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 : :
34 : : using namespace util::hex_literals;
35 : :
36 : 11814 : static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
37 : : {
38 : 11814 : CMutableTransaction txNew;
39 : 11814 : txNew.version = 1;
40 [ + - ]: 11814 : txNew.vin.resize(1);
41 [ + - ]: 11814 : txNew.vout.resize(1);
42 [ + - + - : 23628 : txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
+ - ]
43 : 11814 : txNew.vout[0].nValue = genesisReward;
44 : 11814 : txNew.vout[0].scriptPubKey = genesisOutputScript;
45 : :
46 : 11814 : CBlock genesis;
47 : 11814 : genesis.nTime = nTime;
48 : 11814 : genesis.nBits = nBits;
49 : 11814 : genesis.nNonce = nNonce;
50 : 11814 : genesis.nVersion = nVersion;
51 [ + - + - : 23628 : genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
- + ]
52 : 11814 : genesis.hashPrevBlock.SetNull();
53 [ + - ]: 11814 : genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
54 : 11814 : return genesis;
55 : 11814 : }
56 : :
57 : : /**
58 : : * Build the genesis block. Note that the output of its generation
59 : : * transaction cannot be spent since it did not originally exist in the
60 : : * database.
61 : : *
62 : : * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
63 : : * CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
64 : : * CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
65 : : * CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
66 : : * vMerkleTree: 4a5e1e
67 : : */
68 : 9900 : static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
69 : : {
70 : 9900 : const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
71 [ + - ]: 9900 : const CScript genesisOutputScript = CScript() << "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"_hex << OP_CHECKSIG;
72 [ + - ]: 9900 : return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
73 : 9900 : }
74 : :
75 : : /**
76 : : * Main network on which people trade goods and services.
77 : : */
78 : 0 : class CMainParams : public CChainParams {
79 : : public:
80 : 2680 : CMainParams() {
81 : 2680 : m_chain_type = ChainType::MAIN;
82 : 2680 : consensus.signet_blocks = false;
83 [ - + ]: 2680 : consensus.signet_challenge.clear();
84 : 2680 : consensus.nSubsidyHalvingInterval = 210000;
85 : 2680 : consensus.script_flag_exceptions.emplace( // BIP16 exception
86 [ + - ]: 2680 : uint256{"00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"}, SCRIPT_VERIFY_NONE);
87 : 2680 : consensus.script_flag_exceptions.emplace( // Taproot exception
88 [ + - ]: 2680 : uint256{"0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"}, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
89 : 2680 : consensus.BIP34Height = 227931;
90 : 2680 : consensus.BIP34Hash = uint256{"000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"};
91 : 2680 : consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
92 : 2680 : consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
93 : 2680 : consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
94 : 2680 : consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
95 : 2680 : consensus.MinBIP9WarningHeight = 711648; // taproot activation height + miner confirmation window
96 : 2680 : consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
97 : 2680 : consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
98 : 2680 : consensus.nPowTargetSpacing = 10 * 60;
99 : 2680 : consensus.fPowAllowMinDifficultyBlocks = false;
100 : 2680 : consensus.enforce_BIP94 = false;
101 : 2680 : consensus.fPowNoRetargeting = false;
102 [ + - ]: 2680 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
103 : 2680 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
104 : 2680 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
105 : 2680 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
106 : 2680 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
107 : 2680 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
108 : :
109 : 2680 : consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000001128750f82f4c366153a3a030"};
110 : 2680 : consensus.defaultAssumeValid = uint256{"00000000000000000000ccebd6d74d9194d8dcdc1d177c478e094bfad51ba5ac"}; // 938343
111 : :
112 : : /**
113 : : * The message start string is designed to be unlikely to occur in normal data.
114 : : * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
115 : : * a large 32-bit integer with any alignment.
116 : : */
117 : 2680 : pchMessageStart[0] = 0xf9;
118 : 2680 : pchMessageStart[1] = 0xbe;
119 : 2680 : pchMessageStart[2] = 0xb4;
120 : 2680 : pchMessageStart[3] = 0xd9;
121 : 2680 : nDefaultPort = 8333;
122 : 2680 : nPruneAfterHeight = 100000;
123 : 2680 : m_assumed_blockchain_size = 856;
124 : 2680 : m_assumed_chain_state_size = 14;
125 : :
126 [ + - ]: 2680 : genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
127 [ + - ]: 2680 : consensus.hashGenesisBlock = genesis.GetHash();
128 [ - + ]: 2680 : assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
129 [ - + ]: 2680 : assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
130 : :
131 : : // Note that of those which support the service bits prefix, most only support a subset of
132 : : // possible options.
133 : : // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
134 : : // service bits we want, but we should get them updated to support all service bits wanted by any
135 : : // release ASAP to avoid it where possible.
136 [ + - ]: 2680 : vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
137 [ + - ]: 2680 : vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
138 [ + - ]: 2680 : vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
139 [ + - ]: 2680 : vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
140 [ + - ]: 2680 : vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
141 [ + - ]: 2680 : vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
142 [ + - ]: 2680 : vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
143 [ + - ]: 2680 : 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
144 : :
145 [ + - + - ]: 2680 : base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
146 [ + - + - ]: 2680 : base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
147 [ + - + - ]: 2680 : base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
148 [ + - ]: 2680 : base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
149 [ + - ]: 2680 : base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
150 : :
151 [ + - ]: 2680 : bech32_hrp = "bc";
152 : :
153 [ + - + - ]: 2680 : vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
154 : :
155 : 2680 : fDefaultConsistencyChecks = false;
156 : 2680 : m_is_mockable_chain = false;
157 : :
158 : 2680 : m_assumeutxo_data = {
159 : : {
160 : : .height = 840'000,
161 : 2680 : .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
162 : : .m_chain_tx_count = 991032194,
163 : : .blockhash = uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"},
164 : : },
165 : : {
166 : : .height = 880'000,
167 : 2680 : .hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
168 : : .m_chain_tx_count = 1145604538,
169 : : .blockhash = uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"},
170 : : },
171 : : {
172 : : .height = 910'000,
173 : 2680 : .hash_serialized = AssumeutxoHash{uint256{"4daf8a17b4902498c5787966a2b51c613acdab5df5db73f196fa59a4da2f1568"}},
174 : : .m_chain_tx_count = 1226586151,
175 : : .blockhash = uint256{"0000000000000000000108970acb9522ffd516eae17acddcb1bd16469194a821"},
176 : : },
177 : : {
178 : : .height = 935'000,
179 [ + - ]: 2680 : .hash_serialized = AssumeutxoHash{uint256{"e4b90ef9eae834f56c4b64d2d50143cee10ad87994c614d7d04125e2a6025050"}},
180 : : .m_chain_tx_count = 1305397408,
181 : : .blockhash = uint256{"0000000000000000000147034958af1652b2b91bba607beacc5e72a56f0fb5ee"},
182 : : }
183 [ + - ]: 2680 : };
184 : :
185 : 2680 : chainTxData = ChainTxData{
186 : : // Data from RPC: getchaintxstats 4096 00000000000000000000ccebd6d74d9194d8dcdc1d177c478e094bfad51ba5ac
187 : : .nTime = 1772055173,
188 : : .tx_count = 1315805869,
189 : : .dTxRate = 5.40111006496122,
190 : : };
191 : :
192 : : // Generated by headerssync-params.py on 2026-02-25.
193 : 2680 : m_headers_sync_params = HeadersSyncParams{
194 : : .commitment_period = 641,
195 : : .redownload_buffer_size = 15218, // 15218/641 = ~23.7 commitments
196 : : };
197 : 2680 : }
198 : : };
199 : :
200 : : /**
201 : : * Testnet (v3): public test network which is reset from time to time.
202 : : */
203 : 0 : class CTestNetParams : public CChainParams {
204 : : public:
205 : 1947 : CTestNetParams() {
206 : 1947 : m_chain_type = ChainType::TESTNET;
207 : 1947 : consensus.signet_blocks = false;
208 [ - + ]: 1947 : consensus.signet_challenge.clear();
209 : 1947 : consensus.nSubsidyHalvingInterval = 210000;
210 : 1947 : consensus.script_flag_exceptions.emplace( // BIP16 exception
211 [ + - ]: 1947 : uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
212 : 1947 : consensus.BIP34Height = 21111;
213 : 1947 : consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
214 : 1947 : consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
215 : 1947 : consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
216 : 1947 : consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
217 : 1947 : consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
218 : 1947 : consensus.MinBIP9WarningHeight = 2013984; // taproot activation height + miner confirmation window
219 : 1947 : consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
220 : 1947 : consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
221 : 1947 : consensus.nPowTargetSpacing = 10 * 60;
222 : 1947 : consensus.fPowAllowMinDifficultyBlocks = true;
223 : 1947 : consensus.enforce_BIP94 = false;
224 : 1947 : consensus.fPowNoRetargeting = false;
225 [ + - ]: 1947 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
226 : 1947 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
227 : 1947 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
228 : 1947 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
229 : 1947 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
230 : 1947 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
231 : :
232 : 1947 : consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000017dde1c649f3708d14b6"};
233 : 1947 : consensus.defaultAssumeValid = uint256{"000000007a61e4230b28ac5cb6b5e5a0130de37ac1faf2f8987d2fa6505b67f4"}; // 4842348
234 : :
235 : 1947 : pchMessageStart[0] = 0x0b;
236 : 1947 : pchMessageStart[1] = 0x11;
237 : 1947 : pchMessageStart[2] = 0x09;
238 : 1947 : pchMessageStart[3] = 0x07;
239 : 1947 : nDefaultPort = 18333;
240 : 1947 : nPruneAfterHeight = 1000;
241 : 1947 : m_assumed_blockchain_size = 245;
242 : 1947 : m_assumed_chain_state_size = 19;
243 : :
244 [ + - ]: 1947 : genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
245 [ + - ]: 1947 : consensus.hashGenesisBlock = genesis.GetHash();
246 [ - + ]: 1947 : assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
247 [ - + ]: 1947 : assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
248 : :
249 [ - + ]: 1947 : vFixedSeeds.clear();
250 : 1947 : vSeeds.clear();
251 : : // nodes with support for servicebits filtering should be at the top
252 [ + - ]: 1947 : vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
253 [ + - ]: 1947 : vSeeds.emplace_back("seed.tbtc.petertodd.net.");
254 [ + - ]: 1947 : vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
255 [ + - ]: 1947 : vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
256 [ + - ]: 1947 : vSeeds.emplace_back("seed.testnet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
257 : :
258 [ + - + - ]: 1947 : base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
259 [ + - + - ]: 1947 : base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
260 [ + - + - ]: 1947 : base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
261 [ + - ]: 1947 : base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
262 [ + - ]: 1947 : base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
263 : :
264 [ + - ]: 1947 : bech32_hrp = "tb";
265 : :
266 [ + - + - ]: 1947 : vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
267 : :
268 : 1947 : fDefaultConsistencyChecks = false;
269 : 1947 : m_is_mockable_chain = false;
270 : :
271 : 1947 : m_assumeutxo_data = {
272 : : {
273 : : .height = 2'500'000,
274 : 1947 : .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
275 : : .m_chain_tx_count = 66484552,
276 : : .blockhash = uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"},
277 : : },
278 : : {
279 : : .height = 4'840'000,
280 [ + - ]: 1947 : .hash_serialized = AssumeutxoHash{uint256{"ce6bb677bb2ee9789c4a1c9d73e6683c53fc20e8fdbedbdaaf468982a0c8db2a"}},
281 : : .m_chain_tx_count = 536078574,
282 : : .blockhash = uint256{"00000000000000f4971a7fb37fbdff89315b69a2e1920c467654a382f0d64786"},
283 : : }
284 [ + - ]: 1947 : };
285 : :
286 : 1947 : chainTxData = ChainTxData{
287 : : // Data from RPC: getchaintxstats 4096 000000007a61e4230b28ac5cb6b5e5a0130de37ac1faf2f8987d2fa6505b67f4
288 : : .nTime = 1772051651,
289 : : .tx_count = 536108416,
290 : : .dTxRate = 0.02691479016257117,
291 : : };
292 : :
293 : : // Generated by headerssync-params.py on 2026-02-25.
294 : 1947 : m_headers_sync_params = HeadersSyncParams{
295 : : .commitment_period = 673,
296 : : .redownload_buffer_size = 14460, // 14460/673 = ~21.5 commitments
297 : : };
298 : 1947 : }
299 : : };
300 : :
301 : : /**
302 : : * Testnet (v4): public test network which is reset from time to time.
303 : : */
304 : 0 : class CTestNet4Params : public CChainParams {
305 : : public:
306 : 1914 : CTestNet4Params() {
307 : 1914 : m_chain_type = ChainType::TESTNET4;
308 : 1914 : consensus.signet_blocks = false;
309 [ - + ]: 1914 : consensus.signet_challenge.clear();
310 : 1914 : consensus.nSubsidyHalvingInterval = 210000;
311 : 1914 : consensus.BIP34Height = 1;
312 : 1914 : consensus.BIP34Hash = uint256{};
313 : 1914 : consensus.BIP65Height = 1;
314 : 1914 : consensus.BIP66Height = 1;
315 : 1914 : consensus.CSVHeight = 1;
316 : 1914 : consensus.SegwitHeight = 1;
317 : 1914 : consensus.MinBIP9WarningHeight = 0;
318 : 1914 : consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
319 : 1914 : consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
320 : 1914 : consensus.nPowTargetSpacing = 10 * 60;
321 : 1914 : consensus.fPowAllowMinDifficultyBlocks = true;
322 : 1914 : consensus.enforce_BIP94 = true;
323 : 1914 : consensus.fPowNoRetargeting = false;
324 : :
325 : 1914 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
326 : 1914 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
327 : 1914 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
328 : 1914 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
329 : 1914 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
330 : 1914 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
331 : :
332 : 1914 : consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000009a0fe15d0177d086304"};
333 : 1914 : consensus.defaultAssumeValid = uint256{"0000000002368b1e4ee27e2e85676ae6f9f9e69579b29093e9a82c170bf7cf8a"}; // 123613
334 : :
335 : 1914 : pchMessageStart[0] = 0x1c;
336 : 1914 : pchMessageStart[1] = 0x16;
337 : 1914 : pchMessageStart[2] = 0x3f;
338 : 1914 : pchMessageStart[3] = 0x28;
339 : 1914 : nDefaultPort = 48333;
340 : 1914 : nPruneAfterHeight = 1000;
341 : 1914 : m_assumed_blockchain_size = 31;
342 : 1914 : m_assumed_chain_state_size = 2;
343 : :
344 : 1914 : const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
345 [ + - ]: 1914 : const CScript testnet4_genesis_script = CScript() << "000000000000000000000000000000000000000000000000000000000000000000"_hex << OP_CHECKSIG;
346 : 3828 : genesis = CreateGenesisBlock(testnet4_genesis_msg,
347 : : testnet4_genesis_script,
348 : : 1714777860,
349 : : 393743547,
350 : : 0x1d00ffff,
351 : : 1,
352 [ + - ]: 1914 : 50 * COIN);
353 [ + - ]: 1914 : consensus.hashGenesisBlock = genesis.GetHash();
354 [ - + ]: 1914 : assert(consensus.hashGenesisBlock == uint256{"00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"});
355 [ - + ]: 1914 : assert(genesis.hashMerkleRoot == uint256{"7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"});
356 : :
357 [ - + ]: 1914 : vFixedSeeds.clear();
358 : 1914 : vSeeds.clear();
359 : : // nodes with support for servicebits filtering should be at the top
360 [ + - ]: 1914 : vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
361 [ + - ]: 1914 : vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
362 : :
363 [ + - + - ]: 1914 : base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
364 [ + - + - ]: 1914 : base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
365 [ + - + - ]: 1914 : base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
366 [ + - ]: 1914 : base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
367 [ + - ]: 1914 : base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
368 : :
369 [ + - ]: 1914 : bech32_hrp = "tb";
370 : :
371 [ + - + - ]: 1914 : vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
372 : :
373 : 1914 : fDefaultConsistencyChecks = false;
374 : 1914 : m_is_mockable_chain = false;
375 : :
376 : 1914 : m_assumeutxo_data = {
377 : : {
378 : : .height = 90'000,
379 : 1914 : .hash_serialized = AssumeutxoHash{uint256{"784fb5e98241de66fdd429f4392155c9e7db5c017148e66e8fdbc95746f8b9b5"}},
380 : : .m_chain_tx_count = 11347043,
381 : : .blockhash = uint256{"0000000002ebe8bcda020e0dd6ccfbdfac531d2f6a81457191b99fc2df2dbe3b"},
382 : : },
383 : : {
384 : : .height = 120'000,
385 [ + - ]: 1914 : .hash_serialized = AssumeutxoHash{uint256{"10b05d05ad468d0971162e1b222a4aa66caca89da2bb2a93f8f37fb29c4794b0"}},
386 : : .m_chain_tx_count = 14141057,
387 : : .blockhash = uint256{"000000000bd2317e51b3c5794981c35ba894ce27d3e772d5c39ecd9cbce01dc8"},
388 : : }
389 [ + - ]: 1914 : };
390 : :
391 : 1914 : chainTxData = ChainTxData{
392 : : // Data from RPC: getchaintxstats 4096 0000000002368b1e4ee27e2e85676ae6f9f9e69579b29093e9a82c170bf7cf8a
393 : : .nTime = 1772013387,
394 : : .tx_count = 14191421,
395 : : .dTxRate = 0.01848579579528412,
396 : : };
397 : :
398 : : // Generated by headerssync-params.py on 2026-02-25.
399 : 1914 : m_headers_sync_params = HeadersSyncParams{
400 : : .commitment_period = 606,
401 : : .redownload_buffer_size = 16092, // 16092/606 = ~26.6 commitments
402 : : };
403 : 1914 : }
404 : : };
405 : :
406 : : /**
407 : : * Signet: test network with an additional consensus parameter (see BIP325).
408 : : */
409 : 0 : class SigNetParams : public CChainParams {
410 : : public:
411 : 1995 : explicit SigNetParams(const SigNetOptions& options)
412 : 1995 : {
413 : 1995 : std::vector<uint8_t> bin;
414 [ - + ]: 1995 : vFixedSeeds.clear();
415 : 1995 : vSeeds.clear();
416 : :
417 [ + + ]: 1995 : if (!options.challenge) {
418 [ + - ]: 3970 : bin = "512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae"_hex_v_u8;
419 [ + - + - ]: 1985 : vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_signet), std::end(chainparams_seed_signet));
420 [ + - ]: 1985 : vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
421 [ + - ]: 1985 : 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
422 : :
423 : 1985 : consensus.nMinimumChainWork = uint256{"00000000000000000000000000000000000000000000000000000b463ea0a4b8"};
424 : 1985 : consensus.defaultAssumeValid = uint256{"00000008414aab61092ef93f1aacc54cf9e9f16af29ddad493b908a01ff5c329"}; // 293175
425 : 1985 : m_assumed_blockchain_size = 24;
426 : 1985 : m_assumed_chain_state_size = 4;
427 : 1985 : chainTxData = ChainTxData{
428 : : // Data from RPC: getchaintxstats 4096 00000008414aab61092ef93f1aacc54cf9e9f16af29ddad493b908a01ff5c329
429 : : .nTime = 1772055248,
430 : : .tx_count = 28676833,
431 : : .dTxRate = 0.06736623436338929,
432 : : };
433 : : } else {
434 [ + - ]: 10 : bin = *options.challenge;
435 : 10 : consensus.nMinimumChainWork = uint256{};
436 : 10 : consensus.defaultAssumeValid = uint256{};
437 : 10 : m_assumed_blockchain_size = 0;
438 : 10 : m_assumed_chain_state_size = 0;
439 : 10 : chainTxData = ChainTxData{
440 : : 0,
441 : : 0,
442 : : 0,
443 : : };
444 [ - + + - : 20 : LogInfo("Signet with challenge %s", HexStr(bin));
+ - ]
445 : : }
446 : :
447 [ - + ]: 1995 : if (options.seeds) {
448 [ # # ]: 0 : vSeeds = *options.seeds;
449 : : }
450 : :
451 : 1995 : m_chain_type = ChainType::SIGNET;
452 : 1995 : consensus.signet_blocks = true;
453 [ + - ]: 1995 : consensus.signet_challenge.assign(bin.begin(), bin.end());
454 : 1995 : consensus.nSubsidyHalvingInterval = 210000;
455 : 1995 : consensus.BIP34Height = 1;
456 : 1995 : consensus.BIP34Hash = uint256{};
457 : 1995 : consensus.BIP65Height = 1;
458 : 1995 : consensus.BIP66Height = 1;
459 : 1995 : consensus.CSVHeight = 1;
460 : 1995 : consensus.SegwitHeight = 1;
461 : 1995 : consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
462 : 1995 : consensus.nPowTargetSpacing = 10 * 60;
463 : 1995 : consensus.fPowAllowMinDifficultyBlocks = false;
464 : 1995 : consensus.enforce_BIP94 = false;
465 : 1995 : consensus.fPowNoRetargeting = false;
466 : 1995 : consensus.MinBIP9WarningHeight = 0;
467 : 1995 : consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
468 [ + - ]: 1995 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
469 : 1995 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
470 : 1995 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
471 : 1995 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
472 : 1995 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
473 : 1995 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
474 : :
475 : : // message start is defined as the first 4 bytes of the sha256d of the block script
476 [ + - ]: 1995 : HashWriter h{};
477 [ + - ]: 1995 : h << consensus.signet_challenge;
478 [ + - ]: 1995 : uint256 hash = h.GetHash();
479 : 1995 : std::copy_n(hash.begin(), 4, pchMessageStart.begin());
480 : :
481 : 1995 : nDefaultPort = 38333;
482 : 1995 : nPruneAfterHeight = 1000;
483 : :
484 [ + - ]: 1995 : genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
485 [ + - ]: 1995 : consensus.hashGenesisBlock = genesis.GetHash();
486 [ - + ]: 1995 : assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
487 [ - + ]: 1995 : assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
488 : :
489 : 1995 : m_assumeutxo_data = {
490 : : {
491 : : .height = 160'000,
492 : 1995 : .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
493 : : .m_chain_tx_count = 2289496,
494 : : .blockhash = uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"},
495 : : },
496 : : {
497 : : .height = 290'000,
498 [ + - ]: 1995 : .hash_serialized = AssumeutxoHash{uint256{"97267e000b4b876800167e71b9123f1529d13b14308abec2888bbd2160d14545"}},
499 : : .m_chain_tx_count = 28547497,
500 : : .blockhash = uint256{"0000000577f2741bb30cd9d39d6d71b023afbeb9764f6260786a97969d5c9ac0"},
501 : : }
502 [ + - ]: 1995 : };
503 : :
504 [ + - + - ]: 1995 : base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
505 [ + - + - ]: 1995 : base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
506 [ + - + - ]: 1995 : base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
507 [ + - ]: 1995 : base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
508 [ + - ]: 1995 : base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
509 : :
510 [ + - ]: 1995 : bech32_hrp = "tb";
511 : :
512 : 1995 : fDefaultConsistencyChecks = false;
513 : 1995 : m_is_mockable_chain = false;
514 : :
515 : : // Generated by headerssync-params.py on 2026-02-25.
516 : 1995 : m_headers_sync_params = HeadersSyncParams{
517 : : .commitment_period = 620,
518 : : .redownload_buffer_size = 15724, // 15724/620 = ~25.4 commitments
519 : : };
520 : 1995 : }
521 : : };
522 : :
523 : : /**
524 : : * Regression test: intended for private networks only. Has minimal difficulty to ensure that
525 : : * blocks can be found instantly.
526 : : */
527 : 0 : class CRegTestParams : public CChainParams
528 : : {
529 : : public:
530 : 3278 : explicit CRegTestParams(const RegTestOptions& opts)
531 : 3278 : {
532 : 3278 : m_chain_type = ChainType::REGTEST;
533 : 3278 : consensus.signet_blocks = false;
534 [ - + ]: 3278 : consensus.signet_challenge.clear();
535 : 3278 : consensus.nSubsidyHalvingInterval = 150;
536 : 3278 : consensus.BIP34Height = 1; // Always active unless overridden
537 : 3278 : consensus.BIP34Hash = uint256();
538 : 3278 : consensus.BIP65Height = 1; // Always active unless overridden
539 : 3278 : consensus.BIP66Height = 1; // Always active unless overridden
540 : 3278 : consensus.CSVHeight = 1; // Always active unless overridden
541 : 3278 : consensus.SegwitHeight = 0; // Always active unless overridden
542 : 3278 : consensus.MinBIP9WarningHeight = 0;
543 : 3278 : consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
544 : 3278 : consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
545 : 3278 : consensus.nPowTargetSpacing = 10 * 60;
546 : 3278 : consensus.fPowAllowMinDifficultyBlocks = true;
547 : 3278 : consensus.enforce_BIP94 = opts.enforce_bip94;
548 : 3278 : consensus.fPowNoRetargeting = true;
549 : :
550 [ + + ]: 3278 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
551 : 3278 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
552 : 3278 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
553 : 3278 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
554 : 3278 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 108; // 75%
555 : 3278 : consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 144; // Faster than normal for regtest (144 instead of 2016)
556 : :
557 : 3278 : consensus.nMinimumChainWork = uint256{};
558 : 3278 : consensus.defaultAssumeValid = uint256{};
559 : :
560 : 3278 : pchMessageStart[0] = 0xfa;
561 : 3278 : pchMessageStart[1] = 0xbf;
562 : 3278 : pchMessageStart[2] = 0xb5;
563 : 3278 : pchMessageStart[3] = 0xda;
564 : 3278 : nDefaultPort = 18444;
565 [ + + ]: 3278 : nPruneAfterHeight = opts.fastprune ? 100 : 1000;
566 : 3278 : m_assumed_blockchain_size = 0;
567 : 3278 : m_assumed_chain_state_size = 0;
568 : :
569 [ + + + + : 3309 : for (const auto& [dep, height] : opts.activation_heights) {
+ + + - ]
570 [ + + + + : 31 : switch (dep) {
+ - ]
571 : 15 : case Consensus::BuriedDeployment::DEPLOYMENT_SEGWIT:
572 : 15 : consensus.SegwitHeight = int{height};
573 : 15 : break;
574 : 3 : case Consensus::BuriedDeployment::DEPLOYMENT_HEIGHTINCB:
575 : 3 : consensus.BIP34Height = int{height};
576 : 3 : break;
577 : 5 : case Consensus::BuriedDeployment::DEPLOYMENT_DERSIG:
578 : 5 : consensus.BIP66Height = int{height};
579 : 5 : break;
580 : 3 : case Consensus::BuriedDeployment::DEPLOYMENT_CLTV:
581 : 3 : consensus.BIP65Height = int{height};
582 : 3 : break;
583 : 5 : case Consensus::BuriedDeployment::DEPLOYMENT_CSV:
584 : 5 : consensus.CSVHeight = int{height};
585 : 5 : break;
586 : : }
587 : : }
588 : :
589 [ + + ]: 3280 : for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
590 : 2 : consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
591 : 2 : consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
592 : 2 : consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
593 : : }
594 : :
595 [ + - ]: 3278 : genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
596 [ + - ]: 3278 : consensus.hashGenesisBlock = genesis.GetHash();
597 [ - + ]: 3278 : assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
598 [ - + ]: 3278 : assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
599 : :
600 [ - + ]: 3278 : vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
601 : 3278 : vSeeds.clear();
602 [ + - ]: 3278 : vSeeds.emplace_back("dummySeed.invalid.");
603 : :
604 : 3278 : fDefaultConsistencyChecks = true;
605 : 3278 : m_is_mockable_chain = true;
606 : :
607 : 3278 : m_assumeutxo_data = {
608 : : { // For use by unit tests
609 : : .height = 110,
610 : 3278 : .hash_serialized = AssumeutxoHash{uint256{"b952555c8ab81fec46f3d4253b7af256d766ceb39fb7752b9d18cdf4a0141327"}},
611 : : .m_chain_tx_count = 111,
612 : : .blockhash = uint256{"6affe030b7965ab538f820a56ef56c8149b7dc1d1c144af57113be080db7c397"},
613 : : },
614 : : {
615 : : // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
616 : : .height = 200,
617 : 3278 : .hash_serialized = AssumeutxoHash{uint256{"17dcc016d188d16068907cdeb38b75691a118d43053b8cd6a25969419381d13a"}},
618 : : .m_chain_tx_count = 201,
619 : : .blockhash = uint256{"385901ccbd69dff6bbd00065d01fb8a9e464dede7cfe0372443884f9b1dcf6b9"},
620 : : },
621 : : {
622 : : // For use by test/functional/feature_assumeutxo.py and test/functional/tool_bitcoin_chainstate.py
623 : : .height = 299,
624 [ + - ]: 3278 : .hash_serialized = AssumeutxoHash{uint256{"d2b051ff5e8eef46520350776f4100dd710a63447a8e01d917e92e79751a63e2"}},
625 : : .m_chain_tx_count = 334,
626 : : .blockhash = uint256{"7cc695046fec709f8c9394b6f928f81e81fd3ac20977bb68760fa1faa7916ea2"},
627 : : },
628 [ + - ]: 3278 : };
629 : :
630 : 3278 : chainTxData = ChainTxData{
631 : : .nTime = 0,
632 : : .tx_count = 0,
633 : : .dTxRate = 0.001, // Set a non-zero rate to make it testable
634 : : };
635 : :
636 [ + - + - ]: 3278 : base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
637 [ + - + - ]: 3278 : base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
638 [ + - + - ]: 3278 : base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
639 [ + - ]: 3278 : base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
640 [ + - ]: 3278 : base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
641 : :
642 [ + - ]: 3278 : bech32_hrp = "bcrt";
643 : :
644 : : // Copied from Testnet4.
645 : 3278 : m_headers_sync_params = HeadersSyncParams{
646 : : .commitment_period = 275,
647 : : .redownload_buffer_size = 7017, // 7017/275 = ~25.5 commitments
648 : : };
649 : 3278 : }
650 : : };
651 : :
652 : 1995 : std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
653 : : {
654 : 1995 : return std::make_unique<const SigNetParams>(options);
655 : : }
656 : :
657 : 3278 : std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
658 : : {
659 : 3278 : return std::make_unique<const CRegTestParams>(options);
660 : : }
661 : :
662 : 2680 : std::unique_ptr<const CChainParams> CChainParams::Main()
663 : : {
664 : 2680 : return std::make_unique<const CMainParams>();
665 : : }
666 : :
667 : 1947 : std::unique_ptr<const CChainParams> CChainParams::TestNet()
668 : : {
669 : 1947 : return std::make_unique<const CTestNetParams>();
670 : : }
671 : :
672 : 1914 : std::unique_ptr<const CChainParams> CChainParams::TestNet4()
673 : : {
674 : 1914 : return std::make_unique<const CTestNet4Params>();
675 : : }
676 : :
677 : 15 : std::vector<int> CChainParams::GetAvailableSnapshotHeights() const
678 : : {
679 : 15 : std::vector<int> heights;
680 [ - + + - ]: 15 : heights.reserve(m_assumeutxo_data.size());
681 : :
682 [ + + ]: 60 : for (const auto& data : m_assumeutxo_data) {
683 [ + - ]: 45 : heights.emplace_back(data.height);
684 : : }
685 : 15 : return heights;
686 : 0 : }
687 : :
688 : 8 : std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
689 : : {
690 : 8 : const auto mainnet_msg = CChainParams::Main()->MessageStart();
691 : 8 : const auto testnet_msg = CChainParams::TestNet()->MessageStart();
692 : 8 : const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
693 : 8 : const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
694 [ + - ]: 8 : const auto signet_msg = CChainParams::SigNet({})->MessageStart();
695 : :
696 [ + + ]: 8 : if (std::ranges::equal(message, mainnet_msg)) {
697 : 1 : return ChainType::MAIN;
698 [ - + ]: 7 : } else if (std::ranges::equal(message, testnet_msg)) {
699 : 0 : return ChainType::TESTNET;
700 [ + + ]: 7 : } else if (std::ranges::equal(message, testnet4_msg)) {
701 : 1 : return ChainType::TESTNET4;
702 [ + + ]: 6 : } else if (std::ranges::equal(message, regtest_msg)) {
703 : 3 : return ChainType::REGTEST;
704 [ + + ]: 3 : } else if (std::ranges::equal(message, signet_msg)) {
705 : 1 : return ChainType::SIGNET;
706 : : }
707 : 2 : return std::nullopt;
708 [ + - ]: 8 : }
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