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