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chainparams.cpp 18KB

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  1. // Copyright (c) 2010 Satoshi Nakamoto
  2. // Copyright (c) 2009-2016 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. #include "chainparams.h"
  6. #include "consensus/merkle.h"
  7. #include "tinyformat.h"
  8. #include "util.h"
  9. #include "utilstrencodings.h"
  10. #include <assert.h>
  11. #include "chainparamsseeds.h"
  12. static CBlock CreateGenesisBlock(const char* pszTimestamp, const CScript& genesisOutputScript, uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  13. {
  14. CMutableTransaction txNew;
  15. txNew.nVersion = 1;
  16. txNew.vin.resize(1);
  17. txNew.vout.resize(1);
  18. txNew.vin[0].scriptSig = CScript() << 486604799 << CScriptNum(4) << std::vector<unsigned char>((const unsigned char*)pszTimestamp, (const unsigned char*)pszTimestamp + strlen(pszTimestamp));
  19. txNew.vout[0].nValue = genesisReward;
  20. txNew.vout[0].scriptPubKey = genesisOutputScript;
  21. CBlock genesis;
  22. genesis.nTime = nTime;
  23. genesis.nBits = nBits;
  24. genesis.nNonce = nNonce;
  25. genesis.nVersion = nVersion;
  26. genesis.vtx.push_back(MakeTransactionRef(std::move(txNew)));
  27. genesis.hashPrevBlock.SetNull();
  28. genesis.hashMerkleRoot = BlockMerkleRoot(genesis);
  29. return genesis;
  30. }
  31. /**
  32. * Build the genesis block. Note that the output of its generation
  33. * transaction cannot be spent since it did not originally exist in the
  34. * database.
  35. *
  36. * CBlock(hash=000000000019d6, ver=1, hashPrevBlock=00000000000000, hashMerkleRoot=4a5e1e, nTime=1231006505, nBits=1d00ffff, nNonce=2083236893, vtx=1)
  37. * CTransaction(hash=4a5e1e, ver=1, vin.size=1, vout.size=1, nLockTime=0)
  38. * CTxIn(COutPoint(000000, -1), coinbase 04ffff001d0104455468652054696d65732030332f4a616e2f32303039204368616e63656c6c6f72206f6e206272696e6b206f66207365636f6e64206261696c6f757420666f722062616e6b73)
  39. * CTxOut(nValue=50.00000000, scriptPubKey=0x5F1DF16B2B704C8A578D0B)
  40. * vMerkleTree: 4a5e1e
  41. */
  42. static CBlock CreateGenesisBlock(uint32_t nTime, uint32_t nNonce, uint32_t nBits, int32_t nVersion, const CAmount& genesisReward)
  43. {
  44. const char* pszTimestamp = "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks";
  45. const CScript genesisOutputScript = CScript() << ParseHex("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f") << OP_CHECKSIG;
  46. return CreateGenesisBlock(pszTimestamp, genesisOutputScript, nTime, nNonce, nBits, nVersion, genesisReward);
  47. }
  48. void CChainParams::UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
  49. {
  50. consensus.vDeployments[d].nStartTime = nStartTime;
  51. consensus.vDeployments[d].nTimeout = nTimeout;
  52. }
  53. /**
  54. * Main network
  55. */
  56. /**
  57. * What makes a good checkpoint block?
  58. * + Is surrounded by blocks with reasonable timestamps
  59. * (no blocks before with a timestamp after, none after with
  60. * timestamp before)
  61. * + Contains no strange transactions
  62. */
  63. class CMainParams : public CChainParams {
  64. public:
  65. CMainParams() {
  66. strNetworkID = "main";
  67. consensus.nSubsidyHalvingInterval = 210000;
  68. consensus.BIP34Height = 227931;
  69. consensus.BIP34Hash = uint256S("0x000000000000024b89b42a942fe0d9fea3bb44ab7bd1b19115dd6a759c0808b8");
  70. consensus.BIP65Height = 388381; // 000000000000000004c2b624ed5d7756c508d90fd0da2c7c679febfa6c4735f0
  71. consensus.BIP66Height = 363725; // 00000000000000000379eaa19dce8c9b722d46ae6a57c2f1a988119488b50931
  72. consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  73. consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
  74. consensus.nPowTargetSpacing = 10 * 60;
  75. consensus.fPowAllowMinDifficultyBlocks = false;
  76. consensus.fPowNoRetargeting = false;
  77. consensus.nRuleChangeActivationThreshold = 1916; // 95% of 2016
  78. consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
  79. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
  80. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
  81. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
  82. // Deployment of BIP68, BIP112, and BIP113.
  83. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
  84. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1462060800; // May 1st, 2016
  85. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
  86. // Deployment of SegWit (BIP141, BIP143, and BIP147)
  87. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
  88. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
  89. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.
  90. // The best chain should have at least this much work.
  91. consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000003f94d1ad391682fe038bf5");
  92. // By default assume that the signatures in ancestors of this block are valid.
  93. consensus.defaultAssumeValid = uint256S("0x00000000000000000013176bf8d7dfeab4e1db31dc93bc311b436e82ab226b90"); //453354
  94. /**
  95. * The message start string is designed to be unlikely to occur in normal data.
  96. * The characters are rarely used upper ASCII, not valid as UTF-8, and produce
  97. * a large 32-bit integer with any alignment.
  98. */
  99. pchMessageStart[0] = 0xf9;
  100. pchMessageStart[1] = 0xbe;
  101. pchMessageStart[2] = 0xb4;
  102. pchMessageStart[3] = 0xd9;
  103. nDefaultPort = 8333;
  104. nPruneAfterHeight = 100000;
  105. genesis = CreateGenesisBlock(1231006505, 2083236893, 0x1d00ffff, 1, 50 * COIN);
  106. consensus.hashGenesisBlock = genesis.GetHash();
  107. assert(consensus.hashGenesisBlock == uint256S("0x000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"));
  108. assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
  109. // Note that of those with the service bits flag, most only support a subset of possible options
  110. vSeeds.emplace_back("seed.bitcoin.sipa.be", true); // Pieter Wuille, only supports x1, x5, x9, and xd
  111. vSeeds.emplace_back("dnsseed.bluematt.me", true); // Matt Corallo, only supports x9
  112. vSeeds.emplace_back("dnsseed.bitcoin.dashjr.org", false); // Luke Dashjr
  113. vSeeds.emplace_back("seed.bitcoinstats.com", true); // Christian Decker, supports x1 - xf
  114. vSeeds.emplace_back("seed.bitcoin.jonasschnelli.ch", true); // Jonas Schnelli, only supports x1, x5, x9, and xd
  115. vSeeds.emplace_back("seed.btc.petertodd.org", true); // Peter Todd, only supports x1, x5, x9, and xd
  116. base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,0);
  117. base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,5);
  118. base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,128);
  119. base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x88, 0xB2, 0x1E};
  120. base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x88, 0xAD, 0xE4};
  121. vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_main, pnSeed6_main + ARRAYLEN(pnSeed6_main));
  122. fDefaultConsistencyChecks = false;
  123. fRequireStandard = true;
  124. fMineBlocksOnDemand = false;
  125. checkpointData = (CCheckpointData) {
  126. {
  127. { 11111, uint256S("0x0000000069e244f73d78e8fd29ba2fd2ed618bd6fa2ee92559f542fdb26e7c1d")},
  128. { 33333, uint256S("0x000000002dd5588a74784eaa7ab0507a18ad16a236e7b1ce69f00d7ddfb5d0a6")},
  129. { 74000, uint256S("0x0000000000573993a3c9e41ce34471c079dcf5f52a0e824a81e7f953b8661a20")},
  130. {105000, uint256S("0x00000000000291ce28027faea320c8d2b054b2e0fe44a773f3eefb151d6bdc97")},
  131. {134444, uint256S("0x00000000000005b12ffd4cd315cd34ffd4a594f430ac814c91184a0d42d2b0fe")},
  132. {168000, uint256S("0x000000000000099e61ea72015e79632f216fe6cb33d7899acb35b75c8303b763")},
  133. {193000, uint256S("0x000000000000059f452a5f7340de6682a977387c17010ff6e6c3bd83ca8b1317")},
  134. {210000, uint256S("0x000000000000048b95347e83192f69cf0366076336c639f9b7228e9ba171342e")},
  135. {216116, uint256S("0x00000000000001b4f4b433e81ee46494af945cf96014816a4e2370f11b23df4e")},
  136. {225430, uint256S("0x00000000000001c108384350f74090433e7fcf79a606b8e797f065b130575932")},
  137. {250000, uint256S("0x000000000000003887df1f29024b06fc2200b55f8af8f35453d7be294df2d214")},
  138. {279000, uint256S("0x0000000000000001ae8c72a0b0c301f67e3afca10e819efa9041e458e9bd7e40")},
  139. {295000, uint256S("0x00000000000000004d9b4ef50f0f9d686fd69db2e03af35a100370c64632a983")},
  140. }
  141. };
  142. chainTxData = ChainTxData{
  143. // Data as of block 00000000000000000166d612d5595e2b1cd88d71d695fc580af64d8da8658c23 (height 446482).
  144. 1483472411, // * UNIX timestamp of last known number of transactions
  145. 184495391, // * total number of transactions between genesis and that timestamp
  146. // (the tx=... number in the SetBestChain debug.log lines)
  147. 3.2 // * estimated number of transactions per second after that timestamp
  148. };
  149. }
  150. };
  151. /**
  152. * Testnet (v3)
  153. */
  154. class CTestNetParams : public CChainParams {
  155. public:
  156. CTestNetParams() {
  157. strNetworkID = "test";
  158. consensus.nSubsidyHalvingInterval = 210000;
  159. consensus.BIP34Height = 21111;
  160. consensus.BIP34Hash = uint256S("0x0000000023b3a96d3484e5abb3755c413e7d41500f8e2a5c3f0dd01299cd8ef8");
  161. consensus.BIP65Height = 581885; // 00000000007f6655f22f98e72ed80d8b06dc761d5da09df0fa1dc4be4f861eb6
  162. consensus.BIP66Height = 330776; // 000000002104c8c45e99a8853285a3b592602a3ccde2b832481da85e9e4ba182
  163. consensus.powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  164. consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
  165. consensus.nPowTargetSpacing = 10 * 60;
  166. consensus.fPowAllowMinDifficultyBlocks = true;
  167. consensus.fPowNoRetargeting = false;
  168. consensus.nRuleChangeActivationThreshold = 1512; // 75% for testchains
  169. consensus.nMinerConfirmationWindow = 2016; // nPowTargetTimespan / nPowTargetSpacing
  170. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
  171. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 1199145601; // January 1, 2008
  172. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 1230767999; // December 31, 2008
  173. // Deployment of BIP68, BIP112, and BIP113.
  174. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
  175. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 1456790400; // March 1st, 2016
  176. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 1493596800; // May 1st, 2017
  177. // Deployment of SegWit (BIP141, BIP143, and BIP147)
  178. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
  179. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
  180. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017
  181. // The best chain should have at least this much work.
  182. consensus.nMinimumChainWork = uint256S("0x00000000000000000000000000000000000000000000001f057509eba81aed91");
  183. // By default assume that the signatures in ancestors of this block are valid.
  184. consensus.defaultAssumeValid = uint256S("0x00000000000128796ee387cf110ccb9d2f36cffaf7f73079c995377c65ac0dcc"); //1079274
  185. pchMessageStart[0] = 0x0b;
  186. pchMessageStart[1] = 0x11;
  187. pchMessageStart[2] = 0x09;
  188. pchMessageStart[3] = 0x07;
  189. nDefaultPort = 18333;
  190. nPruneAfterHeight = 1000;
  191. genesis = CreateGenesisBlock(1296688602, 414098458, 0x1d00ffff, 1, 50 * COIN);
  192. consensus.hashGenesisBlock = genesis.GetHash();
  193. assert(consensus.hashGenesisBlock == uint256S("0x000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943"));
  194. assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
  195. vFixedSeeds.clear();
  196. vSeeds.clear();
  197. // nodes with support for servicebits filtering should be at the top
  198. vSeeds.emplace_back("testnet-seed.bitcoin.jonasschnelli.ch", true);
  199. vSeeds.emplace_back("seed.tbtc.petertodd.org", true);
  200. vSeeds.emplace_back("testnet-seed.bluematt.me", false);
  201. vSeeds.emplace_back("testnet-seed.bitcoin.schildbach.de", false);
  202. base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
  203. base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
  204. base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
  205. base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
  206. base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
  207. vFixedSeeds = std::vector<SeedSpec6>(pnSeed6_test, pnSeed6_test + ARRAYLEN(pnSeed6_test));
  208. fDefaultConsistencyChecks = false;
  209. fRequireStandard = false;
  210. fMineBlocksOnDemand = false;
  211. checkpointData = (CCheckpointData) {
  212. {
  213. {546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")},
  214. }
  215. };
  216. chainTxData = ChainTxData{
  217. // Data as of block 00000000c2872f8f8a8935c8e3c5862be9038c97d4de2cf37ed496991166928a (height 1063660)
  218. 1483546230,
  219. 12834668,
  220. 0.15
  221. };
  222. }
  223. };
  224. /**
  225. * Regression test
  226. */
  227. class CRegTestParams : public CChainParams {
  228. public:
  229. CRegTestParams() {
  230. strNetworkID = "regtest";
  231. consensus.nSubsidyHalvingInterval = 150;
  232. consensus.BIP34Height = 100000000; // BIP34 has not activated on regtest (far in the future so block v1 are not rejected in tests)
  233. consensus.BIP34Hash = uint256();
  234. consensus.BIP65Height = 1351; // BIP65 activated on regtest (Used in rpc activation tests)
  235. consensus.BIP66Height = 1251; // BIP66 activated on regtest (Used in rpc activation tests)
  236. consensus.powLimit = uint256S("7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
  237. consensus.nPowTargetTimespan = 14 * 24 * 60 * 60; // two weeks
  238. consensus.nPowTargetSpacing = 10 * 60;
  239. consensus.fPowAllowMinDifficultyBlocks = true;
  240. consensus.fPowNoRetargeting = true;
  241. consensus.nRuleChangeActivationThreshold = 108; // 75% for testchains
  242. consensus.nMinerConfirmationWindow = 144; // Faster than normal for regtest (144 instead of 2016)
  243. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].bit = 28;
  244. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nStartTime = 0;
  245. consensus.vDeployments[Consensus::DEPLOYMENT_TESTDUMMY].nTimeout = 999999999999ULL;
  246. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].bit = 0;
  247. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nStartTime = 0;
  248. consensus.vDeployments[Consensus::DEPLOYMENT_CSV].nTimeout = 999999999999ULL;
  249. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].bit = 1;
  250. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
  251. consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
  252. // The best chain should have at least this much work.
  253. consensus.nMinimumChainWork = uint256S("0x00");
  254. // By default assume that the signatures in ancestors of this block are valid.
  255. consensus.defaultAssumeValid = uint256S("0x00");
  256. pchMessageStart[0] = 0xfa;
  257. pchMessageStart[1] = 0xbf;
  258. pchMessageStart[2] = 0xb5;
  259. pchMessageStart[3] = 0xda;
  260. nDefaultPort = 18444;
  261. nPruneAfterHeight = 1000;
  262. genesis = CreateGenesisBlock(1296688602, 2, 0x207fffff, 1, 50 * COIN);
  263. consensus.hashGenesisBlock = genesis.GetHash();
  264. assert(consensus.hashGenesisBlock == uint256S("0x0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206"));
  265. assert(genesis.hashMerkleRoot == uint256S("0x4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"));
  266. vFixedSeeds.clear(); //!< Regtest mode doesn't have any fixed seeds.
  267. vSeeds.clear(); //!< Regtest mode doesn't have any DNS seeds.
  268. fDefaultConsistencyChecks = true;
  269. fRequireStandard = false;
  270. fMineBlocksOnDemand = true;
  271. checkpointData = (CCheckpointData) {
  272. {
  273. {0, uint256S("0f9188f13cb7b2c71f2a335e3a4fc328bf5beb436012afca590b1a11466e2206")},
  274. }
  275. };
  276. chainTxData = ChainTxData{
  277. 0,
  278. 0,
  279. 0
  280. };
  281. base58Prefixes[PUBKEY_ADDRESS] = std::vector<unsigned char>(1,111);
  282. base58Prefixes[SCRIPT_ADDRESS] = std::vector<unsigned char>(1,196);
  283. base58Prefixes[SECRET_KEY] = std::vector<unsigned char>(1,239);
  284. base58Prefixes[EXT_PUBLIC_KEY] = {0x04, 0x35, 0x87, 0xCF};
  285. base58Prefixes[EXT_SECRET_KEY] = {0x04, 0x35, 0x83, 0x94};
  286. }
  287. };
  288. static std::unique_ptr<CChainParams> globalChainParams;
  289. const CChainParams &Params() {
  290. assert(globalChainParams);
  291. return *globalChainParams;
  292. }
  293. std::unique_ptr<CChainParams> CreateChainParams(const std::string& chain)
  294. {
  295. if (chain == CBaseChainParams::MAIN)
  296. return std::unique_ptr<CChainParams>(new CMainParams());
  297. else if (chain == CBaseChainParams::TESTNET)
  298. return std::unique_ptr<CChainParams>(new CTestNetParams());
  299. else if (chain == CBaseChainParams::REGTEST)
  300. return std::unique_ptr<CChainParams>(new CRegTestParams());
  301. throw std::runtime_error(strprintf("%s: Unknown chain %s.", __func__, chain));
  302. }
  303. void SelectParams(const std::string& network)
  304. {
  305. SelectBaseParams(network);
  306. globalChainParams = CreateChainParams(network);
  307. }
  308. void UpdateVersionBitsParameters(Consensus::DeploymentPos d, int64_t nStartTime, int64_t nTimeout)
  309. {
  310. globalChainParams->UpdateVersionBitsParameters(d, nStartTime, nTimeout);
  311. }