Coverage Report

Created: 2025-09-19 18:20

next uncovered line (L), next uncovered region (R), next uncovered branch (B)
/root/bitcoin/src/kernel/chainparams.cpp
Line
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Source
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// Copyright (c) 2010 Satoshi Nakamoto
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// Copyright (c) 2009-present The Bitcoin Core developers
3
// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include <kernel/chainparams.h>
7
8
#include <chainparamsseeds.h>
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#include <consensus/amount.h>
10
#include <consensus/merkle.h>
11
#include <consensus/params.h>
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#include <hash.h>
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#include <kernel/messagestartchars.h>
14
#include <logging.h>
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#include <primitives/block.h>
16
#include <primitives/transaction.h>
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#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>
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#include <cstring>
27
#include <type_traits>
28
29
using namespace util::hex_literals;
30
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// Workaround MSVC bug triggering C7595 when calling consteval constructors in
32
// initializer lists.
33
// https://developercommunity.visualstudio.com/t/Bogus-C7595-error-on-valid-C20-code/10906093
34
#if defined(_MSC_VER)
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auto consteval_ctor(auto&& input) { return input; }
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#else
37
0
#define consteval_ctor(input) (input)
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#endif
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static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
41
0
{
42
0
    CMutableTransaction txNew;
43
0
    txNew.version = 1;
44
0
    txNew.vin.resize(1);
45
0
    txNew.vout.resize(1);
46
0
    txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
47
0
    txNew.vout[0].nValue = genesisReward;
48
0
    txNew.vout[0].scriptPubKey = genesisOutputScript;
49
50
0
    CBlock genesis;
51
0
    genesis.nTime    = nTime;
52
0
    genesis.nBits    = nBits;
53
0
    genesis.nNonce   = nNonce;
54
0
    genesis.nVersion = nVersion;
55
0
    genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
56
0
    genesis.hashPrevBlock.SetNull();
57
0
    genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
58
0
    return genesis;
59
0
}
60
61
/**
62
 * Build the genesis block. Note that the output of its generation
63
 * transaction cannot be spent since it did not originally exist in the
64
 * database.
65
 *
66
 * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
67
 *   CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
68
 *     CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
69
 *     CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
70
 *   vMerkleTree: 4a5e1e
71
 */
72
static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
73
0
{
74
0
    const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
75
0
    const CScript genesisOutputScript = CScript() << "04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f"_hex << OP_CHECKSIG;
76
0
    return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
77
0
}
78
79
/**
80
 * Main network on which people trade goods and services.
81
 */
82
class CMainParams : public CChainParams {
83
public:
84
0
    CMainParams() {
85
0
        m_chain_type = ChainType::MAIN;
86
0
        consensus.signet_blocks = false;
87
0
        consensus.signet_challenge.clear();
88
0
        consensus.nSubsidyHalvingInterval = 210000;
89
0
        consensus.script_flag_exceptions.emplace( // BIP16 exception
90
0
            uint256{"00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22"}, SCRIPT_VERIFY_NONE);
91
0
        consensus.script_flag_exceptions.emplace( // Taproot exception
92
0
            uint256{"0000000000000000000f14c35b2d841e986ab5441de8c585d5ffe55ea1e395ad"}, SCRIPT_VERIFY_P2SH | SCRIPT_VERIFY_WITNESS);
93
0
        consensus.BIP34Height = 227931;
94
0
        consensus.BIP34Hash = uint256{"000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8"};
95
0
        consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
96
0
        consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
97
0
        consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
98
0
        consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
99
0
        consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
100
0
        consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
101
0
        consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
102
0
        consensus.nPowTargetSpacing = 10 * 60;
103
0
        consensus.fPowAllowMinDifficultyBlocks = false;
104
0
        consensus.enforce_BIP94 = false;
105
0
        consensus.fPowNoRetargeting = false;
106
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
107
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
108
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
109
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
110
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
111
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
112
113
        // Deployment of Taproot (BIPs 340-342)
114
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
115
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
116
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
117
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
118
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1815; // 90%
119
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
120
121
0
        consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000dee8e2a309ad8a9820433c68"};
122
0
        consensus.defaultAssumeValid = uint256{"00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb"}; // 912683
123
124
        /**
125
         * The message start string is designed to be unlikely to occur in normal data.
126
         * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
127
         * a large 32-bit integer with any alignment.
128
         */
129
0
        pchMessageStart[0] = 0xf9;
130
0
        pchMessageStart[1] = 0xbe;
131
0
        pchMessageStart[2] = 0xb4;
132
0
        pchMessageStart[3] = 0xd9;
133
0
        nDefaultPort = 8333;
134
0
        nPruneAfterHeight = 100000;
135
0
        m_assumed_blockchain_size = 810;
136
0
        m_assumed_chain_state_size = 14;
137
138
0
        genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
139
0
        consensus.hashGenesisBlock = genesis.GetHash();
140
0
        assert(consensus.hashGenesisBlock == uint256{"000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"});
141
0
        assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
142
143
        // Note that of those which support the service bits prefix, most only support a subset of
144
        // possible options.
145
        // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
146
        // service bits we want, but we should get them updated to support all service bits wanted by any
147
        // release ASAP to avoid it where possible.
148
0
        vSeeds.emplace_back("seed.bitcoin.sipa.be."); // Pieter Wuille, only supports x1, x5, x9, and xd
149
0
        vSeeds.emplace_back("dnsseed.bluematt.me."); // Matt Corallo, only supports x9
150
0
        vSeeds.emplace_back("dnsseed.bitcoin.dashjr-list-of-p2p-nodes.us."); // Luke Dashjr
151
0
        vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch."); // Jonas Schnelli, only supports x1, x5, x9, and xd
152
0
        vSeeds.emplace_back("seed.btc.petertodd.net."); // Peter Todd, only supports x1, x5, x9, and xd
153
0
        vSeeds.emplace_back("seed.bitcoin.sprovoost.nl."); // Sjors Provoost
154
0
        vSeeds.emplace_back("dnsseed.emzy.de."); // Stephan Oeste
155
0
        vSeeds.emplace_back("seed.bitcoin.wiz.biz."); // Jason Maurice
156
0
        vSeeds.emplace_back("seed.mainnet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
157
158
0
        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
159
0
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
160
0
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,128);
161
0
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
162
0
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
163
164
0
        bech32_hrp = "bc";
165
166
0
        vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
167
168
0
        fDefaultConsistencyChecks = false;
169
0
        m_is_mockable_chain = false;
170
171
0
        m_assumeutxo_data = {
172
0
            {
173
0
                .height = 840'000,
174
0
                .hash_serialized = AssumeutxoHash{uint256{"a2a5521b1b5ab65f67818e5e8eccabb7171a517f9e2382208f77687310768f96"}},
175
0
                .m_chain_tx_count = 991032194,
176
0
                .blockhash = consteval_ctor(uint256{"0000000000000000000320283a032748cef8227873ff4872689bf23f1cda83a5"}),
177
0
            },
178
0
            {
179
0
                .height = 880'000,
180
0
                .hash_serialized = AssumeutxoHash{uint256{"dbd190983eaf433ef7c15f78a278ae42c00ef52e0fd2a54953782175fbadcea9"}},
181
0
                .m_chain_tx_count = 1145604538,
182
0
                .blockhash = consteval_ctor(uint256{"000000000000000000010b17283c3c400507969a9c2afd1dcf2082ec5cca2880"}),
183
0
            },
184
0
            {
185
0
                .height = 910'000,
186
0
                .hash_serialized = AssumeutxoHash{uint256{"4daf8a17b4902498c5787966a2b51c613acdab5df5db73f196fa59a4da2f1568"}},
187
0
                .m_chain_tx_count = 1226586151,
188
0
                .blockhash = consteval_ctor(uint256{"0000000000000000000108970acb9522ffd516eae17acddcb1bd16469194a821"}),
189
0
            }
190
0
        };
191
192
0
        chainTxData = ChainTxData{
193
            // Data from RPC: getchaintxstats 4096 00000000000000000000611fd22f2df7c8fbd0688745c3a6c3bb5109cc2a12cb
194
0
            .nTime    = 1756722903,
195
0
            .tx_count = 1235299397,
196
0
            .dTxRate  = 5.456290459519495,
197
0
        };
198
0
    }
199
};
200
201
/**
202
 * Testnet (v3): public test network which is reset from time to time.
203
 */
204
class CTestNetParams : public CChainParams {
205
public:
206
0
    CTestNetParams() {
207
0
        m_chain_type = ChainType::TESTNET;
208
0
        consensus.signet_blocks = false;
209
0
        consensus.signet_challenge.clear();
210
0
        consensus.nSubsidyHalvingInterval = 210000;
211
0
        consensus.script_flag_exceptions.emplace( // BIP16 exception
212
0
            uint256{"00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105"}, SCRIPT_VERIFY_NONE);
213
0
        consensus.BIP34Height = 21111;
214
0
        consensus.BIP34Hash = uint256{"0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8"};
215
0
        consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
216
0
        consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
217
0
        consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
218
0
        consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
219
0
        consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
220
0
        consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
221
0
        consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
222
0
        consensus.nPowTargetSpacing = 10 * 60;
223
0
        consensus.fPowAllowMinDifficultyBlocks = true;
224
0
        consensus.enforce_BIP94 = false;
225
0
        consensus.fPowNoRetargeting = false;
226
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
227
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
228
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
229
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
230
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
231
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
232
233
        // Deployment of Taproot (BIPs 340-342)
234
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
235
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
236
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
237
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
238
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1512; // 75%
239
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
240
241
0
        consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000016dd270dd94fac1d7632"};
242
0
        consensus.defaultAssumeValid = uint256{"0000000000000065c6c38258e201971a3fdfcc2ceee0dd6e85a6c022d45dee34"}; // 4550000
243
244
0
        pchMessageStart[0] = 0x0b;
245
0
        pchMessageStart[1] = 0x11;
246
0
        pchMessageStart[2] = 0x09;
247
0
        pchMessageStart[3] = 0x07;
248
0
        nDefaultPort = 18333;
249
0
        nPruneAfterHeight = 1000;
250
0
        m_assumed_blockchain_size = 240;
251
0
        m_assumed_chain_state_size = 19;
252
253
0
        genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
254
0
        consensus.hashGenesisBlock = genesis.GetHash();
255
0
        assert(consensus.hashGenesisBlock == uint256{"000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"});
256
0
        assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
257
258
0
        vFixedSeeds.clear();
259
0
        vSeeds.clear();
260
        // nodes with support for servicebits filtering should be at the top
261
0
        vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch.");
262
0
        vSeeds.emplace_back("seed.tbtc.petertodd.net.");
263
0
        vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl.");
264
0
        vSeeds.emplace_back("testnet-seed.bluematt.me."); // Just a static list of stable node(s), only supports x9
265
0
        vSeeds.emplace_back("seed.testnet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
266
267
0
        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
268
0
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
269
0
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
270
0
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
271
0
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
272
273
0
        bech32_hrp = "tb";
274
275
0
        vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
276
277
0
        fDefaultConsistencyChecks = false;
278
0
        m_is_mockable_chain = false;
279
280
0
        m_assumeutxo_data = {
281
0
            {
282
0
                .height = 2'500'000,
283
0
                .hash_serialized = AssumeutxoHash{uint256{"f841584909f68e47897952345234e37fcd9128cd818f41ee6c3ca68db8071be7"}},
284
0
                .m_chain_tx_count = 66484552,
285
0
                .blockhash = consteval_ctor(uint256{"0000000000000093bcb68c03a9a168ae252572d348a2eaeba2cdf9231d73206f"}),
286
0
            }
287
0
        };
288
289
0
        chainTxData = ChainTxData{
290
            // Data from RPC: getchaintxstats 4096 0000000000000065c6c38258e201971a3fdfcc2ceee0dd6e85a6c022d45dee34
291
0
            .nTime    = 1751816758,
292
0
            .tx_count = 508468699,
293
0
            .dTxRate  = 7.172978845985714,
294
0
        };
295
0
    }
296
};
297
298
/**
299
 * Testnet (v4): public test network which is reset from time to time.
300
 */
301
class CTestNet4Params : public CChainParams {
302
public:
303
0
    CTestNet4Params() {
304
0
        m_chain_type = ChainType::TESTNET4;
305
0
        consensus.signet_blocks = false;
306
0
        consensus.signet_challenge.clear();
307
0
        consensus.nSubsidyHalvingInterval = 210000;
308
0
        consensus.BIP34Height = 1;
309
0
        consensus.BIP34Hash = uint256{};
310
0
        consensus.BIP65Height = 1;
311
0
        consensus.BIP66Height = 1;
312
0
        consensus.CSVHeight = 1;
313
0
        consensus.SegwitHeight = 1;
314
0
        consensus.MinBIP9WarningHeight = 0;
315
0
        consensus.powLimit = uint256{"00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
316
0
        consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
317
0
        consensus.nPowTargetSpacing = 10 * 60;
318
0
        consensus.fPowAllowMinDifficultyBlocks = true;
319
0
        consensus.enforce_BIP94 = true;
320
0
        consensus.fPowNoRetargeting = false;
321
322
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
323
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
324
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
325
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
326
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1512; // 75%
327
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
328
329
        // Deployment of Taproot (BIPs 340-342)
330
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
331
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
332
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
333
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
334
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1512; // 75%
335
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
336
337
0
        consensus.nMinimumChainWork = uint256{"00000000000000000000000000000000000000000000034a4690fe592dc49c7c"};
338
0
        consensus.defaultAssumeValid = uint256{"000000000000000180a58e7fa3b0db84b5ea76377524894f53660d93ac839d9b"}; // 91000
339
340
0
        pchMessageStart[0] = 0x1c;
341
0
        pchMessageStart[1] = 0x16;
342
0
        pchMessageStart[2] = 0x3f;
343
0
        pchMessageStart[3] = 0x28;
344
0
        nDefaultPort = 48333;
345
0
        nPruneAfterHeight = 1000;
346
0
        m_assumed_blockchain_size = 22;
347
0
        m_assumed_chain_state_size = 2;
348
349
0
        const char* testnet4_genesis_msg = "03/May/2024 000000000000000000001ebd58c244970b3aa9d783bb001011fbe8ea8e98e00e";
350
0
        const CScript testnet4_genesis_script = CScript() << "000000000000000000000000000000000000000000000000000000000000000000"_hex << OP_CHECKSIG;
351
0
        genesis = CreateGenesisBlock(testnet4_genesis_msg,
352
0
                testnet4_genesis_script,
353
0
                1714777860,
354
0
                393743547,
355
0
                0x1d00ffff,
356
0
                1,
357
0
                50 * COIN);
358
0
        consensus.hashGenesisBlock = genesis.GetHash();
359
0
        assert(consensus.hashGenesisBlock == uint256{"00000000da84f2bafbbc53dee25a72ae507ff4914b867c565be350b0da8bf043"});
360
0
        assert(genesis.hashMerkleRoot == uint256{"7aa0a7ae1e223414cb807e40cd57e667b718e42aaf9306db9102fe28912b7b4e"});
361
362
0
        vFixedSeeds.clear();
363
0
        vSeeds.clear();
364
        // nodes with support for servicebits filtering should be at the top
365
0
        vSeeds.emplace_back("seed.testnet4.bitcoin.sprovoost.nl."); // Sjors Provoost
366
0
        vSeeds.emplace_back("seed.testnet4.wiz.biz."); // Jason Maurice
367
368
0
        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
369
0
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
370
0
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
371
0
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
372
0
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
373
374
0
        bech32_hrp = "tb";
375
376
0
        vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_testnet4), std::end(chainparams_seed_testnet4));
377
378
0
        fDefaultConsistencyChecks = false;
379
0
        m_is_mockable_chain = false;
380
381
0
        m_assumeutxo_data = {
382
0
            {
383
0
                .height = 90'000,
384
0
                .hash_serialized = AssumeutxoHash{uint256{"784fb5e98241de66fdd429f4392155c9e7db5c017148e66e8fdbc95746f8b9b5"}},
385
0
                .m_chain_tx_count = 11347043,
386
0
                .blockhash = consteval_ctor(uint256{"0000000002ebe8bcda020e0dd6ccfbdfac531d2f6a81457191b99fc2df2dbe3b"}),
387
0
            }
388
0
        };
389
390
0
        chainTxData = ChainTxData{
391
            // Data from RPC: getchaintxstats 4096 000000000000000180a58e7fa3b0db84b5ea76377524894f53660d93ac839d9b
392
0
            .nTime    = 1752470331,
393
0
            .tx_count = 11414302,
394
0
            .dTxRate  = 0.2842619757327476,
395
0
        };
396
0
    }
397
};
398
399
/**
400
 * Signet: test network with an additional consensus parameter (see BIP325).
401
 */
402
class SigNetParams : public CChainParams {
403
public:
404
    explicit SigNetParams(const SigNetOptions& options)
405
0
    {
406
0
        std::vector<uint8_t> bin;
407
0
        vFixedSeeds.clear();
408
0
        vSeeds.clear();
409
410
0
        if (!options.challenge) {
411
0
            bin = "512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae"_hex_v_u8;
412
0
            vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_signet), std::end(chainparams_seed_signet));
413
0
            vSeeds.emplace_back("seed.signet.bitcoin.sprovoost.nl.");
414
0
            vSeeds.emplace_back("seed.signet.achownodes.xyz."); // Ava Chow, only supports x1, x5, x9, x49, x809, x849, xd, x400, x404, x408, x448, xc08, xc48, x40c
415
416
0
            consensus.nMinimumChainWork = uint256{"0000000000000000000000000000000000000000000000000000067d328e681a"};
417
0
            consensus.defaultAssumeValid = uint256{"000000128586e26813922680309f04e1de713c7542fee86ed908f56368aefe2e"}; // 267665
418
0
            m_assumed_blockchain_size = 20;
419
0
            m_assumed_chain_state_size = 4;
420
0
            chainTxData = ChainTxData{
421
                // Data from RPC: getchaintxstats 4096 000000128586e26813922680309f04e1de713c7542fee86ed908f56368aefe2e
422
0
                .nTime    = 1756723017,
423
0
                .tx_count = 26185472,
424
0
                .dTxRate  = 0.7452721495389969,
425
0
            };
426
0
        } else {
427
0
            bin = *options.challenge;
428
0
            consensus.nMinimumChainWork = uint256{};
429
0
            consensus.defaultAssumeValid = uint256{};
430
0
            m_assumed_blockchain_size = 0;
431
0
            m_assumed_chain_state_size = 0;
432
0
            chainTxData = ChainTxData{
433
0
                0,
434
0
                0,
435
0
                0,
436
0
            };
437
0
            LogInfo("Signet with challenge %s", HexStr(bin));
438
0
        }
439
440
0
        if (options.seeds) {
441
0
            vSeeds = *options.seeds;
442
0
        }
443
444
0
        m_chain_type = ChainType::SIGNET;
445
0
        consensus.signet_blocks = true;
446
0
        consensus.signet_challenge.assign(bin.begin(), bin.end());
447
0
        consensus.nSubsidyHalvingInterval = 210000;
448
0
        consensus.BIP34Height = 1;
449
0
        consensus.BIP34Hash = uint256{};
450
0
        consensus.BIP65Height = 1;
451
0
        consensus.BIP66Height = 1;
452
0
        consensus.CSVHeight = 1;
453
0
        consensus.SegwitHeight = 1;
454
0
        consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
455
0
        consensus.nPowTargetSpacing = 10 * 60;
456
0
        consensus.fPowAllowMinDifficultyBlocks = false;
457
0
        consensus.enforce_BIP94 = false;
458
0
        consensus.fPowNoRetargeting = false;
459
0
        consensus.MinBIP9WarningHeight = 0;
460
0
        consensus.powLimit = uint256{"00000377ae000000000000000000000000000000000000000000000000000000"};
461
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
462
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
463
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
464
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
465
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 1815; // 90%
466
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 2016;
467
468
        // Activation of Taproot (BIPs 340-342)
469
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
470
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
471
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
472
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
473
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 1815; // 90%
474
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 2016;
475
476
        // message start is defined as the first 4 bytes of the sha256d of the block script
477
0
        HashWriter h{};
478
0
        h << consensus.signet_challenge;
479
0
        uint256 hash = h.GetHash();
480
0
        std::copy_n(hash.begin(), 4, pchMessageStart.begin());
481
482
0
        nDefaultPort = 38333;
483
0
        nPruneAfterHeight = 1000;
484
485
0
        genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
486
0
        consensus.hashGenesisBlock = genesis.GetHash();
487
0
        assert(consensus.hashGenesisBlock == uint256{"00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"});
488
0
        assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
489
490
0
        m_assumeutxo_data = {
491
0
            {
492
0
                .height = 160'000,
493
0
                .hash_serialized = AssumeutxoHash{uint256{"fe0a44309b74d6b5883d246cb419c6221bcccf0b308c9b59b7d70783dbdf928a"}},
494
0
                .m_chain_tx_count = 2289496,
495
0
                .blockhash = consteval_ctor(uint256{"0000003ca3c99aff040f2563c2ad8f8ec88bd0fd6b8f0895cfaf1ef90353a62c"}),
496
0
            }
497
0
        };
498
499
0
        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
500
0
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
501
0
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
502
0
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
503
0
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
504
505
0
        bech32_hrp = "tb";
506
507
0
        fDefaultConsistencyChecks = false;
508
0
        m_is_mockable_chain = false;
509
0
    }
510
};
511
512
/**
513
 * Regression test: intended for private networks only. Has minimal difficulty to ensure that
514
 * blocks can be found instantly.
515
 */
516
class CRegTestParams : public CChainParams
517
{
518
public:
519
    explicit CRegTestParams(const RegTestOptions& opts)
520
0
    {
521
0
        m_chain_type = ChainType::REGTEST;
522
0
        consensus.signet_blocks = false;
523
0
        consensus.signet_challenge.clear();
524
0
        consensus.nSubsidyHalvingInterval = 150;
525
0
        consensus.BIP34Height = 1; // Always active unless overridden
526
0
        consensus.BIP34Hash = uint256();
527
0
        consensus.BIP65Height = 1;  // Always active unless overridden
528
0
        consensus.BIP66Height = 1;  // Always active unless overridden
529
0
        consensus.CSVHeight = 1;    // Always active unless overridden
530
0
        consensus.SegwitHeight = 0; // Always active unless overridden
531
0
        consensus.MinBIP9WarningHeight = 0;
532
0
        consensus.powLimit = uint256{"7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff"};
533
0
        consensus.nPowTargetTimespan = 24 * 60 * 60; // one day
534
0
        consensus.nPowTargetSpacing = 10 * 60;
535
0
        consensus.fPowAllowMinDifficultyBlocks = true;
536
0
        consensus.enforce_BIP94 = opts.enforce_bip94;
537
0
        consensus.fPowNoRetargeting = true;
538
539
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
540
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
541
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
542
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
543
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].threshold = 108; // 75%
544
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].period = 144; // Faster than normal for regtest (144 instead of 2016)
545
546
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
547
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
548
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
549
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
550
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].threshold = 108; // 75%
551
0
        consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].period = 144;
552
553
0
        consensus.nMinimumChainWork = uint256{};
554
0
        consensus.defaultAssumeValid = uint256{};
555
556
0
        pchMessageStart[0] = 0xfa;
557
0
        pchMessageStart[1] = 0xbf;
558
0
        pchMessageStart[2] = 0xb5;
559
0
        pchMessageStart[3] = 0xda;
560
0
        nDefaultPort = 18444;
561
0
        nPruneAfterHeight = opts.fastprune ? 100 : 1000;
562
0
        m_assumed_blockchain_size = 0;
563
0
        m_assumed_chain_state_size = 0;
564
565
0
        for (const auto& [dep, height] : opts.activation_heights) {
566
0
            switch (dep) {
567
0
            case Consensus::BuriedDeployment::DEPLOYMENT_SEGWIT:
568
0
                consensus.SegwitHeight = int{height};
569
0
                break;
570
0
            case Consensus::BuriedDeployment::DEPLOYMENT_HEIGHTINCB:
571
0
                consensus.BIP34Height = int{height};
572
0
                break;
573
0
            case Consensus::BuriedDeployment::DEPLOYMENT_DERSIG:
574
0
                consensus.BIP66Height = int{height};
575
0
                break;
576
0
            case Consensus::BuriedDeployment::DEPLOYMENT_CLTV:
577
0
                consensus.BIP65Height = int{height};
578
0
                break;
579
0
            case Consensus::BuriedDeployment::DEPLOYMENT_CSV:
580
0
                consensus.CSVHeight = int{height};
581
0
                break;
582
0
            }
583
0
        }
584
585
0
        for (const auto& [deployment_pos, version_bits_params] : opts.version_bits_parameters) {
586
0
            consensus.vDeployments[deployment_pos].nStartTime = version_bits_params.start_time;
587
0
            consensus.vDeployments[deployment_pos].nTimeout = version_bits_params.timeout;
588
0
            consensus.vDeployments[deployment_pos].min_activation_height = version_bits_params.min_activation_height;
589
0
        }
590
591
0
        genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
592
0
        consensus.hashGenesisBlock = genesis.GetHash();
593
0
        assert(consensus.hashGenesisBlock == uint256{"0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"});
594
0
        assert(genesis.hashMerkleRoot == uint256{"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"});
595
596
0
        vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
597
0
        vSeeds.clear();
598
0
        vSeeds.emplace_back("dummySeed.invalid.");
599
600
0
        fDefaultConsistencyChecks = true;
601
0
        m_is_mockable_chain = true;
602
603
0
        m_assumeutxo_data = {
604
0
            {   // For use by unit tests
605
0
                .height = 110,
606
0
                .hash_serialized = AssumeutxoHash{uint256{"b952555c8ab81fec46f3d4253b7af256d766ceb39fb7752b9d18cdf4a0141327"}},
607
0
                .m_chain_tx_count = 111,
608
0
                .blockhash = consteval_ctor(uint256{"6affe030b7965ab538f820a56ef56c8149b7dc1d1c144af57113be080db7c397"}),
609
0
            },
610
0
            {
611
                // For use by fuzz target src/test/fuzz/utxo_snapshot.cpp
612
0
                .height = 200,
613
0
                .hash_serialized = AssumeutxoHash{uint256{"17dcc016d188d16068907cdeb38b75691a118d43053b8cd6a25969419381d13a"}},
614
0
                .m_chain_tx_count = 201,
615
0
                .blockhash = consteval_ctor(uint256{"385901ccbd69dff6bbd00065d01fb8a9e464dede7cfe0372443884f9b1dcf6b9"}),
616
0
            },
617
0
            {
618
                // For use by test/functional/feature_assumeutxo.py
619
0
                .height = 299,
620
0
                .hash_serialized = AssumeutxoHash{uint256{"d2b051ff5e8eef46520350776f4100dd710a63447a8e01d917e92e79751a63e2"}},
621
0
                .m_chain_tx_count = 334,
622
0
                .blockhash = consteval_ctor(uint256{"7cc695046fec709f8c9394b6f928f81e81fd3ac20977bb68760fa1faa7916ea2"}),
623
0
            },
624
0
        };
625
626
0
        chainTxData = ChainTxData{
627
0
            .nTime = 0,
628
0
            .tx_count = 0,
629
0
            .dTxRate = 0.001, // Set a non-zero rate to make it testable
630
0
        };
631
632
0
        base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
633
0
        base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
634
0
        base58Prefixes[SECRET_KEY] =     std::vector<unsigned char>(1,239);
635
0
        base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
636
0
        base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
637
638
0
        bech32_hrp = "bcrt";
639
0
    }
640
};
641
642
std::unique_ptr<const CChainParams> CChainParams::SigNet(const SigNetOptions& options)
643
0
{
644
0
    return std::make_unique<const SigNetParams>(options);
645
0
}
646
647
std::unique_ptr<const CChainParams> CChainParams::RegTest(const RegTestOptions& options)
648
0
{
649
0
    return std::make_unique<const CRegTestParams>(options);
650
0
}
651
652
std::unique_ptr<const CChainParams> CChainParams::Main()
653
0
{
654
0
    return std::make_unique<const CMainParams>();
655
0
}
656
657
std::unique_ptr<const CChainParams> CChainParams::TestNet()
658
0
{
659
0
    return std::make_unique<const CTestNetParams>();
660
0
}
661
662
std::unique_ptr<const CChainParams> CChainParams::TestNet4()
663
0
{
664
0
    return std::make_unique<const CTestNet4Params>();
665
0
}
666
667
std::vector<int> CChainParams::GetAvailableSnapshotHeights() const
668
0
{
669
0
    std::vector<int> heights;
670
0
    heights.reserve(m_assumeutxo_data.size());
671
672
0
    for (const auto& data : m_assumeutxo_data) {
673
0
        heights.emplace_back(data.height);
674
0
    }
675
0
    return heights;
676
0
}
677
678
std::optional<ChainType> GetNetworkForMagic(const MessageStartChars& message)
679
0
{
680
0
    const auto mainnet_msg = CChainParams::Main()->MessageStart();
681
0
    const auto testnet_msg = CChainParams::TestNet()->MessageStart();
682
0
    const auto testnet4_msg = CChainParams::TestNet4()->MessageStart();
683
0
    const auto regtest_msg = CChainParams::RegTest({})->MessageStart();
684
0
    const auto signet_msg = CChainParams::SigNet({})->MessageStart();
685
686
0
    if (std::ranges::equal(message, mainnet_msg)) {
687
0
        return ChainType::MAIN;
688
0
    } else if (std::ranges::equal(message, testnet_msg)) {
689
0
        return ChainType::TESTNET;
690
0
    } else if (std::ranges::equal(message, testnet4_msg)) {
691
0
        return ChainType::TESTNET4;
692
0
    } else if (std::ranges::equal(message, regtest_msg)) {
693
0
        return ChainType::REGTEST;
694
0
    } else if (std::ranges::equal(message, signet_msg)) {
695
0
        return ChainType::SIGNET;
696
0
    }
697
0
    return std::nullopt;
698
0
}