1 // Copyright (c) 2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2020 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 <chainparams.h>
7
8 #include <chainparamsseeds.h>
9 #include <consensus/merkle.h>
10 #include <deploymentinfo.h>
11 #include <hash.h> // for signet block challenge hash
12 #include <util/system.h>
13
14 #include <assert.h>
15
16 #include <boost/algorithm/string/classification.hpp>
17 #include <boost/algorithm/string/split.hpp>
18
CreateGenesisBlock(const char * pszTimestamp,const CScript & genesisOutputScript,uint32_t nTime,uint32_t nNonce,uint32_t nBits,int32_t nVersion,const CAmount & genesisReward)19 static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
20 {
21 CMutableTransaction txNew;
22 txNew.nVersion = 1;
23 txNew.vin.resize(1);
24 txNew.vout.resize(1);
25 txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
26 txNew.vout[0].nValue = genesisReward;
27 txNew.vout[0].scriptPubKey = genesisOutputScript;
28
29 CBlock genesis;
30 genesis.nTime = nTime;
31 genesis.nBits = nBits;
32 genesis.nNonce = nNonce;
33 genesis.nVersion = nVersion;
34 genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
35 genesis.hashPrevBlock.SetNull();
36 genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
37 return genesis;
38 }
39
40 /**
41 * Build the genesis block. Note that the output of its generation
42 * transaction cannot be spent since it did not originally exist in the
43 * database.
44 *
45 * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
46 * CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
47 * CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
48 * CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
49 * vMerkleTree: 4a5e1e
50 */
CreateGenesisBlock(uint32_t nTime,uint32_t nNonce,uint32_t nBits,int32_t nVersion,const CAmount & genesisReward)51 static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
52 {
53 const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
54 const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
55 return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
56 }
57
58 /**
59 * Main network on which people trade goods and services.
60 */
61 class CMainParams : public CChainParams {
62 public:
CMainParams()63 CMainParams() {
64 strNetworkID = CBaseChainParams::MAIN;
65 consensus.signet_blocks = false;
66 consensus.signet_challenge.clear();
67 consensus.nSubsidyHalvingInterval = 210000;
68 consensus.BIP16Exception = uint256S("0x00000000000002dc756eebf4f49723ed8d30cc28a5f108eb94b1ba88ac4f9c22");
69 consensus.BIP34Height = 227931;
70 consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
71 consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
72 consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
73 consensus.CSVHeight = 419328; // 000000000000000004a1b34462cb8aeebd5799177f7a29cf28f2d1961716b5b5
74 consensus.SegwitHeight = 481824; // 0000000000000000001c8018d9cb3b742ef25114f27563e3fc4a1902167f9893
75 consensus.MinBIP9WarningHeight = 483840; // segwit activation height + miner confirmation window
76 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
77 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
78 consensus.nPowTargetSpacing = 10 * 60;
79 consensus.fPowAllowMinDifficultyBlocks = false;
80 consensus.fPowNoRetargeting = false;
81 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
82 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
83 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
84 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
85 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
86 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
87
88 // Deployment of Taproot (BIPs 340-342)
89 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
90 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
91 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
92 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 709632; // Approximately November 12th, 2021
93
94 consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000001fa4663bbbe19f82de910280");
95 consensus.defaultAssumeValid = uint256S("0x00000000000000000008a89e854d57e5667df88f1cdef6fde2fbca1de5b639ad"); // 691719
96
97 /**
98 * The message start string is designed to be unlikely to occur in normal data.
99 * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
100 * a large 32-bit integer with any alignment.
101 */
102 pchMessageStart[0] = 0xf9;
103 pchMessageStart[1] = 0xbe;
104 pchMessageStart[2] = 0xb4;
105 pchMessageStart[3] = 0xd9;
106 nDefaultPort = 8333;
107 nPruneAfterHeight = 100000;
108 m_assumed_blockchain_size = 420;
109 m_assumed_chain_state_size = 6;
110
111 genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
112 consensus.hashGenesisBlock = genesis.GetHash();
113 assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
114 assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
115
116 // Note that of those which support the service bits prefix, most only support a subset of
117 // possible options.
118 // This is fine at runtime as we'll fall back to using them as an addrfetch if they don't support the
119 // service bits we want, but we should get them updated to support all service bits wanted by any
120 // release ASAP to avoid it where possible.
121 vSeeds.emplace_back("seed.bitcoin.sipa.be"); // Pieter Wuille, only supports x1, x5, x9, and xd
122 vSeeds.emplace_back("dnsseed.bluematt.me"); // Matt Corallo, only supports x9
123 vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org"); // Luke Dashjr
124 vSeeds.emplace_back("seed.bitcoinstats.com"); // Christian Decker, supports x1 - xf
125 vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch"); // Jonas Schnelli, only supports x1, x5, x9, and xd
126 vSeeds.emplace_back("seed.btc.petertodd.org"); // Peter Todd, only supports x1, x5, x9, and xd
127 vSeeds.emplace_back("seed.bitcoin.sprovoost.nl"); // Sjors Provoost
128 vSeeds.emplace_back("dnsseed.emzy.de"); // Stephan Oeste
129 vSeeds.emplace_back("seed.bitcoin.wiz.biz"); // Jason Maurice
130
131 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
132 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
133 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
134 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
135 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
136
137 bech32_hrp = "bc";
138
139 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_main), std::end(chainparams_seed_main));
140
141 fDefaultConsistencyChecks = false;
142 fRequireStandard = true;
143 m_is_test_chain = false;
144 m_is_mockable_chain = false;
145
146 checkpointData = {
147 {
148 { 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
149 { 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
150 { 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
151 {105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
152 {134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
153 {168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
154 {193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
155 {210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
156 {216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
157 {225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
158 {250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
159 {279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
160 {295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")},
161 }
162 };
163
164 m_assumeutxo_data = MapAssumeutxo{
165 // TODO to be specified in a future patch.
166 };
167
168 chainTxData = ChainTxData{
169 // Data from RPC: getchaintxstats 4096 00000000000000000008a89e854d57e5667df88f1cdef6fde2fbca1de5b639ad
170 /* nTime */ 1626697539,
171 /* nTxCount */ 656509474,
172 /* dTxRate */ 2.424920418708139,
173 };
174 }
175 };
176
177 /**
178 * Testnet (v3): public test network which is reset from time to time.
179 */
180 class CTestNetParams : public CChainParams {
181 public:
CTestNetParams()182 CTestNetParams() {
183 strNetworkID = CBaseChainParams::TESTNET;
184 consensus.signet_blocks = false;
185 consensus.signet_challenge.clear();
186 consensus.nSubsidyHalvingInterval = 210000;
187 consensus.BIP16Exception = uint256S("0x00000000dd30457c001f4095d208cc1296b0eed002427aa599874af7a432b105");
188 consensus.BIP34Height = 21111;
189 consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
190 consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
191 consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
192 consensus.CSVHeight = 770112; // 00000000025e930139bac5c6c31a403776da130831ab85be56578f3fa75369bb
193 consensus.SegwitHeight = 834624; // 00000000002b980fcd729daaa248fd9316a5200e9b367f4ff2c42453e84201ca
194 consensus.MinBIP9WarningHeight = 836640; // segwit activation height + miner confirmation window
195 consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
196 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
197 consensus.nPowTargetSpacing = 10 * 60;
198 consensus.fPowAllowMinDifficultyBlocks = true;
199 consensus.fPowNoRetargeting = false;
200 consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
201 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
202 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
203 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
204 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
205 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
206
207 // Deployment of Taproot (BIPs 340-342)
208 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
209 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = 1619222400; // April 24th, 2021
210 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = 1628640000; // August 11th, 2021
211 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
212
213 consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000005180c3bd8290da33a1a");
214 consensus.defaultAssumeValid = uint256S("0x0000000000004ae2f3896ca8ecd41c460a35bf6184e145d91558cece1c688a76"); // 2010000
215
216 pchMessageStart[0] = 0x0b;
217 pchMessageStart[1] = 0x11;
218 pchMessageStart[2] = 0x09;
219 pchMessageStart[3] = 0x07;
220 nDefaultPort = 18333;
221 nPruneAfterHeight = 1000;
222 m_assumed_blockchain_size = 40;
223 m_assumed_chain_state_size = 2;
224
225 genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
226 consensus.hashGenesisBlock = genesis.GetHash();
227 assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
228 assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
229
230 vFixedSeeds.clear();
231 vSeeds.clear();
232 // nodes with support for servicebits filtering should be at the top
233 vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch");
234 vSeeds.emplace_back("seed.tbtc.petertodd.org");
235 vSeeds.emplace_back("seed.testnet.bitcoin.sprovoost.nl");
236 vSeeds.emplace_back("testnet-seed.bluematt.me"); // Just a static list of stable node(s), only supports x9
237
238 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
239 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
240 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
241 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
242 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
243
244 bech32_hrp = "tb";
245
246 vFixedSeeds = std::vector<uint8_t>(std::begin(chainparams_seed_test), std::end(chainparams_seed_test));
247
248 fDefaultConsistencyChecks = false;
249 fRequireStandard = false;
250 m_is_test_chain = true;
251 m_is_mockable_chain = false;
252
253 checkpointData = {
254 {
255 {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
256 }
257 };
258
259 m_assumeutxo_data = MapAssumeutxo{
260 // TODO to be specified in a future patch.
261 };
262
263 chainTxData = ChainTxData{
264 // Data from RPC: getchaintxstats 4096 0000000000004ae2f3896ca8ecd41c460a35bf6184e145d91558cece1c688a76
265 /* nTime */ 1625727096,
266 /* nTxCount */ 60408943,
267 /* dTxRate */ 0.08379062270367649,
268 };
269 }
270 };
271
272 /**
273 * Signet: test network with an additional consensus parameter (see BIP325).
274 */
275 class SigNetParams : public CChainParams {
276 public:
SigNetParams(const ArgsManager & args)277 explicit SigNetParams(const ArgsManager& args) {
278 std::vector<uint8_t> bin;
279 vSeeds.clear();
280
281 if (!args.IsArgSet("-signetchallenge")) {
282 bin = ParseHex("512103ad5e0edad18cb1f0fc0d28a3d4f1f3e445640337489abb10404f2d1e086be430210359ef5021964fe22d6f8e05b2463c9540ce96883fe3b278760f048f5189f2e6c452ae");
283 vSeeds.emplace_back("178.128.221.177");
284 vSeeds.emplace_back("2a01:7c8:d005:390::5");
285 vSeeds.emplace_back("v7ajjeirttkbnt32wpy3c6w3emwnfr3fkla7hpxcfokr3ysd3kqtzmqd.onion:38333");
286
287 consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000000000008546553c03");
288 consensus.defaultAssumeValid = uint256S("0x000000187d4440e5bff91488b700a140441e089a8aaea707414982460edbfe54"); // 47200
289 m_assumed_blockchain_size = 1;
290 m_assumed_chain_state_size = 0;
291 chainTxData = ChainTxData{
292 // Data from RPC: getchaintxstats 4096 000000187d4440e5bff91488b700a140441e089a8aaea707414982460edbfe54
293 /* nTime */ 1626696658,
294 /* nTxCount */ 387761,
295 /* dTxRate */ 0.04035946932424404,
296 };
297 } else {
298 const auto signet_challenge = args.GetArgs("-signetchallenge");
299 if (signet_challenge.size() != 1) {
300 throw std::runtime_error(strprintf("%s: -signetchallenge cannot be multiple values.", __func__));
301 }
302 bin = ParseHex(signet_challenge[0]);
303
304 consensus.nMinimumChainWork = uint256{};
305 consensus.defaultAssumeValid = uint256{};
306 m_assumed_blockchain_size = 0;
307 m_assumed_chain_state_size = 0;
308 chainTxData = ChainTxData{
309 0,
310 0,
311 0,
312 };
313 LogPrintf("Signet with challenge %s\n", signet_challenge[0]);
314 }
315
316 if (args.IsArgSet("-signetseednode")) {
317 vSeeds = args.GetArgs("-signetseednode");
318 }
319
320 strNetworkID = CBaseChainParams::SIGNET;
321 consensus.signet_blocks = true;
322 consensus.signet_challenge.assign(bin.begin(), bin.end());
323 consensus.nSubsidyHalvingInterval = 210000;
324 consensus.BIP16Exception = uint256{};
325 consensus.BIP34Height = 1;
326 consensus.BIP34Hash = uint256{};
327 consensus.BIP65Height = 1;
328 consensus.BIP66Height = 1;
329 consensus.CSVHeight = 1;
330 consensus.SegwitHeight = 1;
331 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
332 consensus.nPowTargetSpacing = 10 * 60;
333 consensus.fPowAllowMinDifficultyBlocks = false;
334 consensus.fPowNoRetargeting = false;
335 consensus.nRuleChangeActivationThreshold = 1815; // 90% of 2016
336 consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
337 consensus.MinBIP9WarningHeight = 0;
338 consensus.powLimit = uint256S("00000377ae000000000000000000000000000000000000000000000000000000");
339 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
340 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = Consensus::BIP9Deployment::NEVER_ACTIVE;
341 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
342 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
343
344 // Activation of Taproot (BIPs 340-342)
345 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
346 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
347 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
348 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
349
350 // message start is defined as the first 4 bytes of the sha256d of the block script
351 CHashWriter h(SER_DISK, 0);
352 h << consensus.signet_challenge;
353 uint256 hash = h.GetHash();
354 memcpy(pchMessageStart, hash.begin(), 4);
355
356 nDefaultPort = 38333;
357 nPruneAfterHeight = 1000;
358
359 genesis = CreateGenesisBlock(1598918400, 52613770, 0x1e0377ae, 1, 50 * COIN);
360 consensus.hashGenesisBlock = genesis.GetHash();
361 assert(consensus.hashGenesisBlock == uint256S("0x00000008819873e925422c1ff0f99f7cc9bbb232af63a077a480a3633bee1ef6"));
362 assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
363
364 vFixedSeeds.clear();
365
366 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
367 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
368 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
369 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
370 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
371
372 bech32_hrp = "tb";
373
374 fDefaultConsistencyChecks = false;
375 fRequireStandard = true;
376 m_is_test_chain = true;
377 m_is_mockable_chain = false;
378 }
379 };
380
381 /**
382 * Regression test: intended for private networks only. Has minimal difficulty to ensure that
383 * blocks can be found instantly.
384 */
385 class CRegTestParams : public CChainParams {
386 public:
CRegTestParams(const ArgsManager & args)387 explicit CRegTestParams(const ArgsManager& args) {
388 strNetworkID = CBaseChainParams::REGTEST;
389 consensus.signet_blocks = false;
390 consensus.signet_challenge.clear();
391 consensus.nSubsidyHalvingInterval = 150;
392 consensus.BIP16Exception = uint256();
393 consensus.BIP34Height = 500; // BIP34 activated on regtest (Used in functional tests)
394 consensus.BIP34Hash = uint256();
395 consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in functional tests)
396 consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in functional tests)
397 consensus.CSVHeight = 432; // CSV activated on regtest (Used in rpc activation tests)
398 consensus.SegwitHeight = 0; // SEGWIT is always activated on regtest unless overridden
399 consensus.MinBIP9WarningHeight = 0;
400 consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
401 consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
402 consensus.nPowTargetSpacing = 10 * 60;
403 consensus.fPowAllowMinDifficultyBlocks = true;
404 consensus.fPowNoRetargeting = true;
405 consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
406 consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
407
408 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
409 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
410 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
411 consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].min_activation_height = 0; // No activation delay
412
413 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].bit = 2;
414 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nStartTime = Consensus::BIP9Deployment::ALWAYS_ACTIVE;
415 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].nTimeout = Consensus::BIP9Deployment::NO_TIMEOUT;
416 consensus.vDeployments[Consensus::DEPLOYMENT_TAPROOT].min_activation_height = 0; // No activation delay
417
418 consensus.nMinimumChainWork = uint256{};
419 consensus.defaultAssumeValid = uint256{};
420
421 pchMessageStart[0] = 0xfa;
422 pchMessageStart[1] = 0xbf;
423 pchMessageStart[2] = 0xb5;
424 pchMessageStart[3] = 0xda;
425 nDefaultPort = 18444;
426 nPruneAfterHeight = args.GetBoolArg("-fastprune", false) ? 100 : 1000;
427 m_assumed_blockchain_size = 0;
428 m_assumed_chain_state_size = 0;
429
430 UpdateActivationParametersFromArgs(args);
431
432 genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
433 consensus.hashGenesisBlock = genesis.GetHash();
434 assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
435 assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
436
437 vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
438 vSeeds.clear(); //!< Regtest mode doesn't have any DNS seeds.
439
440 fDefaultConsistencyChecks = true;
441 fRequireStandard = true;
442 m_is_test_chain = true;
443 m_is_mockable_chain = true;
444
445 checkpointData = {
446 {
447 {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
448 }
449 };
450
451 m_assumeutxo_data = MapAssumeutxo{
452 {
453 110,
454 {AssumeutxoHash{uint256S("0x1ebbf5850204c0bdb15bf030f47c7fe91d45c44c712697e4509ba67adb01c618")}, 110},
455 },
456 {
457 200,
458 {AssumeutxoHash{uint256S("0x51c8d11d8b5c1de51543c579736e786aa2736206d1e11e627568029ce092cf62")}, 200},
459 },
460 };
461
462 chainTxData = ChainTxData{
463 0,
464 0,
465 0
466 };
467
468 base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
469 base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
470 base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
471 base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
472 base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
473
474 bech32_hrp = "bcrt";
475 }
476
477 /**
478 * Allows modifying the Version Bits regtest parameters.
479 */
UpdateVersionBitsParameters(Consensus::DeploymentPos d,int64_t nStartTime,int64_t nTimeout,int min_activation_height)480 void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout, int min_activation_height)
481 {
482 consensus.vDeployments[d].nStartTime = nStartTime;
483 consensus.vDeployments[d].nTimeout = nTimeout;
484 consensus.vDeployments[d].min_activation_height = min_activation_height;
485 }
486 void UpdateActivationParametersFromArgs(const ArgsManager& args);
487 };
488
UpdateActivationParametersFromArgs(const ArgsManager & args)489 void CRegTestParams::UpdateActivationParametersFromArgs(const ArgsManager& args)
490 {
491 if (args.IsArgSet("-segwitheight")) {
492 int64_t height = args.GetArg("-segwitheight", consensus.SegwitHeight);
493 if (height < -1 || height >= std::numeric_limits<int>::max()) {
494 throw std::runtime_error(strprintf("Activation height %ld for segwit is out of valid range. Use -1 to disable segwit.", height));
495 } else if (height == -1) {
496 LogPrintf("Segwit disabled for testing\n");
497 height = std::numeric_limits<int>::max();
498 }
499 consensus.SegwitHeight = static_cast<int>(height);
500 }
501
502 if (!args.IsArgSet("-vbparams")) return;
503
504 for (const std::string& strDeployment : args.GetArgs("-vbparams")) {
505 std::vector<std::string> vDeploymentParams;
506 boost::split(vDeploymentParams, strDeployment, boost::is_any_of(":"));
507 if (vDeploymentParams.size() < 3 || 4 < vDeploymentParams.size()) {
508 throw std::runtime_error("Version bits parameters malformed, expecting deployment:start:end[:min_activation_height]");
509 }
510 int64_t nStartTime, nTimeout;
511 int min_activation_height = 0;
512 if (!ParseInt64(vDeploymentParams[1], &nStartTime)) {
513 throw std::runtime_error(strprintf("Invalid nStartTime (%s)", vDeploymentParams[1]));
514 }
515 if (!ParseInt64(vDeploymentParams[2], &nTimeout)) {
516 throw std::runtime_error(strprintf("Invalid nTimeout (%s)", vDeploymentParams[2]));
517 }
518 if (vDeploymentParams.size() >= 4 && !ParseInt32(vDeploymentParams[3], &min_activation_height)) {
519 throw std::runtime_error(strprintf("Invalid min_activation_height (%s)", vDeploymentParams[3]));
520 }
521 bool found = false;
522 for (int j=0; j < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; ++j) {
523 if (vDeploymentParams[0] == VersionBitsDeploymentInfo[j].name) {
524 UpdateVersionBitsParameters(Consensus::DeploymentPos(j), nStartTime, nTimeout, min_activation_height);
525 found = true;
526 LogPrintf("Setting version bits activation parameters for %s to start=%ld, timeout=%ld, min_activation_height=%d\n", vDeploymentParams[0], nStartTime, nTimeout, min_activation_height);
527 break;
528 }
529 }
530 if (!found) {
531 throw std::runtime_error(strprintf("Invalid deployment (%s)", vDeploymentParams[0]));
532 }
533 }
534 }
535
536 static std::unique_ptr<const CChainParams> globalChainParams;
537
Params()538 const CChainParams &Params() {
539 assert(globalChainParams);
540 return *globalChainParams;
541 }
542
CreateChainParams(const ArgsManager & args,const std::string & chain)543 std::unique_ptr<const CChainParams> CreateChainParams(const ArgsManager& args, const std::string& chain)
544 {
545 if (chain == CBaseChainParams::MAIN) {
546 return std::unique_ptr<CChainParams>(new CMainParams());
547 } else if (chain == CBaseChainParams::TESTNET) {
548 return std::unique_ptr<CChainParams>(new CTestNetParams());
549 } else if (chain == CBaseChainParams::SIGNET) {
550 return std::unique_ptr<CChainParams>(new SigNetParams(args));
551 } else if (chain == CBaseChainParams::REGTEST) {
552 return std::unique_ptr<CChainParams>(new CRegTestParams(args));
553 }
554 throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
555 }
556
SelectParams(const std::string & network)557 void SelectParams(const std::string& network)
558 {
559 SelectBaseParams(network);
560 globalChainParams = CreateChainParams(gArgs, network);
561 }
562